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threads example from Erik Mouw. New question on GtkLabel background

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Sat Nov 13 22:30:29 GMT 1999 Tony Gale  <gale@gtk.org>

        * docs/gtkfaq.sgml: threads example from Erik Mouw.
        New question on GtkLabel background colors.

        * docs/gtk_tut.sgml:
          - Correct the example code callback
            function definitions.
          - Update the gtkdial example code, from Frans van Schaik.
          - Update setselection.c to current API.

        * examples/Makefile examples/*/*.c: Update to code
        listed in tutorial.
This commit is contained in:
GMT 1999 Tony Gale 1999-11-13 23:06:46 +00:00 committed by Tony Gale
parent e4df9fa95b
commit ee3d137660
49 changed files with 2379 additions and 681 deletions
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14
ChangeLog
View File

@ -1,3 +1,17 @@
Sat Nov 13 22:30:29 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtkfaq.sgml: threads example from Erik Mouw.
New question on GtkLabel background colors.
* docs/gtk_tut.sgml:
- Correct the example code callback
function definitions.
- Update the gtkdial example code, from Frans van Schaik.
- Update setselection.c to current API.
* examples/Makefile examples/*/*.c: Update to code
listed in tutorial.
1999-11-10 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkfont-win32.c: Fix a couple of bugs. The Unicode

14
ChangeLog.pre-2-0
View File

@ -1,3 +1,17 @@
Sat Nov 13 22:30:29 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtkfaq.sgml: threads example from Erik Mouw.
New question on GtkLabel background colors.
* docs/gtk_tut.sgml:
- Correct the example code callback
function definitions.
- Update the gtkdial example code, from Frans van Schaik.
- Update setselection.c to current API.
* examples/Makefile examples/*/*.c: Update to code
listed in tutorial.
1999-11-10 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkfont-win32.c: Fix a couple of bugs. The Unicode

14
ChangeLog.pre-2-10
View File

@ -1,3 +1,17 @@
Sat Nov 13 22:30:29 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtkfaq.sgml: threads example from Erik Mouw.
New question on GtkLabel background colors.
* docs/gtk_tut.sgml:
- Correct the example code callback
function definitions.
- Update the gtkdial example code, from Frans van Schaik.
- Update setselection.c to current API.
* examples/Makefile examples/*/*.c: Update to code
listed in tutorial.
1999-11-10 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkfont-win32.c: Fix a couple of bugs. The Unicode

14
ChangeLog.pre-2-2
View File

@ -1,3 +1,17 @@
Sat Nov 13 22:30:29 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtkfaq.sgml: threads example from Erik Mouw.
New question on GtkLabel background colors.
* docs/gtk_tut.sgml:
- Correct the example code callback
function definitions.
- Update the gtkdial example code, from Frans van Schaik.
- Update setselection.c to current API.
* examples/Makefile examples/*/*.c: Update to code
listed in tutorial.
1999-11-10 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkfont-win32.c: Fix a couple of bugs. The Unicode

14
ChangeLog.pre-2-4
View File

@ -1,3 +1,17 @@
Sat Nov 13 22:30:29 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtkfaq.sgml: threads example from Erik Mouw.
New question on GtkLabel background colors.
* docs/gtk_tut.sgml:
- Correct the example code callback
function definitions.
- Update the gtkdial example code, from Frans van Schaik.
- Update setselection.c to current API.
* examples/Makefile examples/*/*.c: Update to code
listed in tutorial.
1999-11-10 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkfont-win32.c: Fix a couple of bugs. The Unicode

14
ChangeLog.pre-2-6
View File

@ -1,3 +1,17 @@
Sat Nov 13 22:30:29 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtkfaq.sgml: threads example from Erik Mouw.
New question on GtkLabel background colors.
* docs/gtk_tut.sgml:
- Correct the example code callback
function definitions.
- Update the gtkdial example code, from Frans van Schaik.
- Update setselection.c to current API.
* examples/Makefile examples/*/*.c: Update to code
listed in tutorial.
1999-11-10 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkfont-win32.c: Fix a couple of bugs. The Unicode

14
ChangeLog.pre-2-8
View File

@ -1,3 +1,17 @@
Sat Nov 13 22:30:29 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtkfaq.sgml: threads example from Erik Mouw.
New question on GtkLabel background colors.
* docs/gtk_tut.sgml:
- Correct the example code callback
function definitions.
- Update the gtkdial example code, from Frans van Schaik.
- Update setselection.c to current API.
* examples/Makefile examples/*/*.c: Update to code
listed in tutorial.
1999-11-10 Tor Lillqvist <tml@iki.fi>
* gdk/win32/gdkfont-win32.c: Fix a couple of bugs. The Unicode

160
docs/faq/gtkfaq.sgml
View File

@ -9,7 +9,7 @@
<!-- NOTE: Use only one author tag, otherwise sgml2txt barfs - TRG -->
<author>Tony Gale, Shawn T. Amundson, Emmanuel Deloget, Nathan Froyd
<date>October 30th 1999
<date>November 9th 1999
<abstract> This document is intended to answer questions that are likely to be
frequently asked by programmers using GTK+ or people who are just looking at
@ -950,6 +950,149 @@ are made outside of the GTK+ lock. So, within a signal
handler you do not need to call gdk_threads_enter(), but
within the other types of callbacks, you do.
Erik Mouw contributed the following code example to illustrate how to
use threads within GTK+ programs.
<tscreen><verb>
/*-------------------------------------------------------------------------
* Filename: gtk-thread.c
* Version: 0.99.1
* Copyright: Copyright (C) 1999, Erik Mouw
* Author: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
* Description: GTK threads example.
* Created at: Sun Oct 17 21:27:09 1999
* Modified by: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
* Modified at: Sun Oct 24 17:21:41 1999
*-----------------------------------------------------------------------*/
/*
* Compile with:
*
* cc -o gtk-thread gtk-thread.c `gtk-config --cflags --libs gthread`
*
* Thanks to Sebastian Wilhelmi and Owen Taylor for pointing out some
* bugs.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <gtk/gtk.h>
#include <glib.h>
#include <pthread.h>
#define YES_IT_IS (1)
#define NO_IT_IS_NOT (0)
typedef struct
{
GtkWidget *label;
int what;
} yes_or_no_args;
G_LOCK_DEFINE_STATIC (yes_or_no);
static volatile int yes_or_no = YES_IT_IS;
void destroy(GtkWidget *widget, gpointer data)
{
gtk_main_quit();
}
void *argument_thread(void *args)
{
yes_or_no_args *data = (yes_or_no_args *)args;
gboolean say_something;
for(;;)
{
/* sleep a while */
sleep(rand() / (RAND_MAX / 3) + 1);
/* lock the yes_or_no_variable */
G_LOCK(yes_or_no);
/* do we have to say something? */
say_something = (yes_or_no != data->what);
if(say_something)
{
/* set the variable */
yes_or_no = data->what;
}
/* Unlock the yes_or_no variable */
G_UNLOCK(yes_or_no);
if(say_something)
{
/* get GTK thread lock */
gdk_threads_enter();
/* set label text */
if(data->what == YES_IT_IS)
gtk_label_set_text(GTK_LABEL(data->label), "O yes, it is!");
else
gtk_label_set_text(GTK_LABEL(data->label), "O no, it isn't!");
/* release GTK thread lock */
gdk_threads_leave();
}
}
return(NULL);
}
int main(int argc, char *argv[])
{
GtkWidget *window;
GtkWidget *label;
yes_or_no_args yes_args, no_args;
pthread_t no_tid, yes_tid;
/* init threads */
g_thread_init(NULL);
/* init gtk */
gtk_init(&amp;argc, &amp;argv);
/* init random number generator */
srand((unsigned int)time(NULL));
/* create a window */
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_signal_connect(GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC(destroy), NULL);
gtk_container_set_border_width(GTK_CONTAINER (window), 10);
/* create a label */
label = gtk_label_new("And now for something completely different ...");
gtk_container_add(GTK_CONTAINER(window), label);
/* show everything */
gtk_widget_show(label);
gtk_widget_show (window);
/* create the threads */
yes_args.label = label;
yes_args.what = YES_IT_IS;
pthread_create(&amp;yes_tid, NULL, argument_thread, &amp;yes_args);
no_args.label = label;
no_args.what = NO_IT_IS_NOT;
pthread_create(&amp;no_tid, NULL, argument_thread, &amp;no_args);
/* enter the GTK main loop */
gdk_threads_enter();
gtk_main();
gdk_threads_leave();
return(0);
}
</verb></tscreen>
<!-- This is the old answer - TRG
@ -1002,7 +1145,7 @@ carefully.
Regardless, it's especially not a priority since relatively good
workarounds exist. -->
<!-- ----------------------------------------------------------------- -->
<sect1>Why do this strange 'x io error' occur when I <tt/fork()/ in my GTK+ app?
<sect1>Why does this strange 'x io error' occur when I <tt/fork()/ in my GTK+ app?
<p>
This is not really a GTK+ problem, and the problem is not related to <tt/fork()/
either. If the 'x io error' occurs then you probably use the <tt/exit()/ function
@ -1014,7 +1157,7 @@ and the underlying X library really doesn't like this.
The right function to use here is <tt/_exit()/.
Erik Mouw gave the following code example to illustrate handling
Erik Mouw contributed the following code example to illustrate handling
fork() and exit().
<tscreen><verb>
@ -1833,6 +1976,17 @@ gtk_misc_set_alignment(GTK_MISK(label), 0.5f, 0.5f);
gtk_misc_set_alignment(GTK_MISK(label), 1.0f, 1.0f);
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1>How do I set the background color of a GtkLabel widget?
<p>
The Gtklabel widget is one of a few GTK+ widgets that don't create
their own window to render themselves into. Instead, they draw
themselves directly onto their parents window.
This means that in order to set the background color for a GtkLabel
widget, you need to change the background color of its parent,
i.e. the object that you pack it into.
<!-- ----------------------------------------------------------------- -->
<sect1>How do I set the color and font of a GtkLabel using a Resource File?
<p>

836
docs/gtk_tut.sgml
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160
docs/gtkfaq.sgml
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@ -9,7 +9,7 @@
<!-- NOTE: Use only one author tag, otherwise sgml2txt barfs - TRG -->
<author>Tony Gale, Shawn T. Amundson, Emmanuel Deloget, Nathan Froyd
<date>October 30th 1999
<date>November 9th 1999
<abstract> This document is intended to answer questions that are likely to be
frequently asked by programmers using GTK+ or people who are just looking at
@ -950,6 +950,149 @@ are made outside of the GTK+ lock. So, within a signal
handler you do not need to call gdk_threads_enter(), but
within the other types of callbacks, you do.
Erik Mouw contributed the following code example to illustrate how to
use threads within GTK+ programs.
<tscreen><verb>
/*-------------------------------------------------------------------------
* Filename: gtk-thread.c
* Version: 0.99.1
* Copyright: Copyright (C) 1999, Erik Mouw
* Author: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
* Description: GTK threads example.
* Created at: Sun Oct 17 21:27:09 1999
* Modified by: Erik Mouw <J.A.K.Mouw@its.tudelft.nl>
* Modified at: Sun Oct 24 17:21:41 1999
*-----------------------------------------------------------------------*/
/*
* Compile with:
*
* cc -o gtk-thread gtk-thread.c `gtk-config --cflags --libs gthread`
*
* Thanks to Sebastian Wilhelmi and Owen Taylor for pointing out some
* bugs.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <gtk/gtk.h>
#include <glib.h>
#include <pthread.h>
#define YES_IT_IS (1)
#define NO_IT_IS_NOT (0)
typedef struct
{
GtkWidget *label;
int what;
} yes_or_no_args;
G_LOCK_DEFINE_STATIC (yes_or_no);
static volatile int yes_or_no = YES_IT_IS;
void destroy(GtkWidget *widget, gpointer data)
{
gtk_main_quit();
}
void *argument_thread(void *args)
{
yes_or_no_args *data = (yes_or_no_args *)args;
gboolean say_something;
for(;;)
{
/* sleep a while */
sleep(rand() / (RAND_MAX / 3) + 1);
/* lock the yes_or_no_variable */
G_LOCK(yes_or_no);
/* do we have to say something? */
say_something = (yes_or_no != data->what);
if(say_something)
{
/* set the variable */
yes_or_no = data->what;
}
/* Unlock the yes_or_no variable */
G_UNLOCK(yes_or_no);
if(say_something)
{
/* get GTK thread lock */
gdk_threads_enter();
/* set label text */
if(data->what == YES_IT_IS)
gtk_label_set_text(GTK_LABEL(data->label), "O yes, it is!");
else
gtk_label_set_text(GTK_LABEL(data->label), "O no, it isn't!");
/* release GTK thread lock */
gdk_threads_leave();
}
}
return(NULL);
}
int main(int argc, char *argv[])
{
GtkWidget *window;
GtkWidget *label;
yes_or_no_args yes_args, no_args;
pthread_t no_tid, yes_tid;
/* init threads */
g_thread_init(NULL);
/* init gtk */
gtk_init(&amp;argc, &amp;argv);
/* init random number generator */
srand((unsigned int)time(NULL));
/* create a window */
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_signal_connect(GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC(destroy), NULL);
gtk_container_set_border_width(GTK_CONTAINER (window), 10);
/* create a label */
label = gtk_label_new("And now for something completely different ...");
gtk_container_add(GTK_CONTAINER(window), label);
/* show everything */
gtk_widget_show(label);
gtk_widget_show (window);
/* create the threads */
yes_args.label = label;
yes_args.what = YES_IT_IS;
pthread_create(&amp;yes_tid, NULL, argument_thread, &amp;yes_args);
no_args.label = label;
no_args.what = NO_IT_IS_NOT;
pthread_create(&amp;no_tid, NULL, argument_thread, &amp;no_args);
/* enter the GTK main loop */
gdk_threads_enter();
gtk_main();
gdk_threads_leave();
return(0);
}
</verb></tscreen>
<!-- This is the old answer - TRG
@ -1002,7 +1145,7 @@ carefully.
Regardless, it's especially not a priority since relatively good
workarounds exist. -->
<!-- ----------------------------------------------------------------- -->
<sect1>Why do this strange 'x io error' occur when I <tt/fork()/ in my GTK+ app?
<sect1>Why does this strange 'x io error' occur when I <tt/fork()/ in my GTK+ app?
<p>
This is not really a GTK+ problem, and the problem is not related to <tt/fork()/
either. If the 'x io error' occurs then you probably use the <tt/exit()/ function
@ -1014,7 +1157,7 @@ and the underlying X library really doesn't like this.
The right function to use here is <tt/_exit()/.
Erik Mouw gave the following code example to illustrate handling
Erik Mouw contributed the following code example to illustrate handling
fork() and exit().
<tscreen><verb>
@ -1833,6 +1976,17 @@ gtk_misc_set_alignment(GTK_MISK(label), 0.5f, 0.5f);
gtk_misc_set_alignment(GTK_MISK(label), 1.0f, 1.0f);
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1>How do I set the background color of a GtkLabel widget?
<p>
The Gtklabel widget is one of a few GTK+ widgets that don't create
their own window to render themselves into. Instead, they draw
themselves directly onto their parents window.
This means that in order to set the background color for a GtkLabel
widget, you need to change the background color of its parent,
i.e. the object that you pack it into.
<!-- ----------------------------------------------------------------- -->
<sect1>How do I set the color and font of a GtkLabel using a Resource File?
<p>

836
docs/tutorial/gtk_tut.sgml
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File diff suppressed because it is too large Load Diff

1
examples/Makefile
View File

@ -27,6 +27,7 @@ SUBDIRS = arrow \
rangewidgets \
rulers \
scribble-simple \
scribble-xinput \
scrolledwin \
selection \
spinbutton \

4
examples/aspectframe/aspectframe.c
View File

@ -2,8 +2,8 @@
#include <gtk/gtk.h>
int
main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *aspect_frame;

12
examples/buttonbox/buttonbox.c
View File

@ -3,12 +3,12 @@
#include <gtk/gtk.h>
/* Create a Button Box with the specified parameters */
GtkWidget *create_bbox (gint horizontal,
char* title,
gint spacing,
gint child_w,
gint child_h,
gint layout)
GtkWidget *create_bbox( gint horizontal,
char *title,
gint spacing,
gint child_w,
gint child_h,
gint layout )
{
GtkWidget *frame;
GtkWidget *bbox;

1
examples/buttons/buttons.c
View File

@ -75,7 +75,6 @@ int main( int argc,
gtk_signal_connect (GTK_OBJECT (window), "delete_event",
GTK_SIGNAL_FUNC (gtk_exit), NULL);
/* Sets the border width of the window. */
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
gtk_widget_realize(window);

14
examples/entry/entry.c
View File

@ -2,28 +2,30 @@
#include <gtk/gtk.h>
void enter_callback(GtkWidget *widget, GtkWidget *entry)
void enter_callback( GtkWidget *widget,
GtkWidget *entry )
{
gchar *entry_text;
entry_text = gtk_entry_get_text(GTK_ENTRY(entry));
printf("Entry contents: %s\n", entry_text);
}
void entry_toggle_editable (GtkWidget *checkbutton,
GtkWidget *entry)
void entry_toggle_editable( GtkWidget *checkbutton,
GtkWidget *entry )
{
gtk_entry_set_editable(GTK_ENTRY(entry),
GTK_TOGGLE_BUTTON(checkbutton)->active);
}
void entry_toggle_visibility (GtkWidget *checkbutton,
GtkWidget *entry)
void entry_toggle_visibility( GtkWidget *checkbutton,
GtkWidget *entry )
{
gtk_entry_set_visibility(GTK_ENTRY(entry),
GTK_TOGGLE_BUTTON(checkbutton)->active);
}
int main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;

4
examples/eventbox/eventbox.c
View File

@ -2,8 +2,8 @@
#include <gtk/gtk.h>
int
main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *event_box;

12
examples/filesel/filesel.c
View File

@ -3,17 +3,20 @@
#include <gtk/gtk.h>
/* Get the selected filename and print it to the console */
void file_ok_sel (GtkWidget *w, GtkFileSelection *fs)
void file_ok_sel( GtkWidget *w,
GtkFileSelection *fs )
{
g_print ("%s\n", gtk_file_selection_get_filename (GTK_FILE_SELECTION (fs)));
}
void destroy (GtkWidget *widget, gpointer data)
void destroy( GtkWidget *widget,
gpointer data )
{
gtk_main_quit ();
}
int main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *filew;
@ -29,7 +32,8 @@ int main (int argc, char *argv[])
"clicked", (GtkSignalFunc) file_ok_sel, filew );
/* Connect the cancel_button to destroy the widget */
gtk_signal_connect_object (GTK_OBJECT (GTK_FILE_SELECTION (filew)->cancel_button),
gtk_signal_connect_object (GTK_OBJECT (GTK_FILE_SELECTION
(filew)->cancel_button),
"clicked", (GtkSignalFunc) gtk_widget_destroy,
GTK_OBJECT (filew));

2
examples/fixed/fixed.c
View File

@ -51,7 +51,7 @@ int main( int argc,
button = gtk_button_new_with_label ("Press me");
/* When the button receives the "clicked" signal, it will call the
* function move_button() passing it the Fixed Containter as its
* function move_button() passing it the Fixed Container as its
* argument. */
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (move_button), fixed);

2
examples/frame/frame.c
View File

@ -30,7 +30,7 @@ int main( int argc,
frame = gtk_frame_new(NULL);
gtk_container_add(GTK_CONTAINER(window), frame);
/* Set the frames label */
/* Set the frame's label */
gtk_frame_set_label( GTK_FRAME(frame), "GTK Frame Widget" );
/* Align the label at the right of the frame */

117
examples/gtkdial/gtkdial.c
View File

@ -275,12 +275,14 @@ gtk_dial_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkDial *dial;
GdkPoint points[3];
GdkPoint points[6];
gdouble s,c;
gdouble theta;
gdouble theta, last, increment;
GtkStyle *blankstyle;
gint xc, yc;
gint upper, lower;
gint tick_length;
gint i;
gint i, inc;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_DIAL (widget), FALSE);
@ -291,37 +293,22 @@ gtk_dial_expose (GtkWidget *widget,
dial = GTK_DIAL (widget);
gdk_window_clear_area (widget->window,
/* gdk_window_clear_area (widget->window,
0, 0,
widget->allocation.width,
widget->allocation.height);
*/
xc = widget->allocation.width/2;
yc = widget->allocation.height/2;
/* Draw ticks */
upper = dial->adjustment->upper;
lower = dial->adjustment->lower;
for (i=0; i<25; i++)
{
theta = (i*M_PI/18. - M_PI/6.);
s = sin(theta);
c = cos(theta);
tick_length = (i%6 == 0) ? dial->pointer_width : dial->pointer_width/2;
gdk_draw_line (widget->window,
widget->style->fg_gc[widget->state],
xc + c*(dial->radius - tick_length),
yc - s*(dial->radius - tick_length),
xc + c*dial->radius,
yc - s*dial->radius);
}
/* Draw pointer */
s = sin(dial->angle);
c = cos(dial->angle);
/* Erase old pointer */
s = sin(dial->last_angle);
c = cos(dial->last_angle);
dial->last_angle = dial->angle;
points[0].x = xc + s*dial->pointer_width/2;
points[0].y = yc + c*dial->pointer_width/2;
@ -329,12 +316,88 @@ gtk_dial_expose (GtkWidget *widget,
points[1].y = yc - s*dial->radius;
points[2].x = xc - s*dial->pointer_width/2;
points[2].y = yc - c*dial->pointer_width/2;
points[3].x = xc - c*dial->radius/10;
points[3].y = yc + s*dial->radius/10;
points[4].x = points[0].x;
points[4].y = points[0].y;
blankstyle = gtk_style_new ();
blankstyle->bg_gc[GTK_STATE_NORMAL] =
widget->style->bg_gc[GTK_STATE_NORMAL];
blankstyle->dark_gc[GTK_STATE_NORMAL] =
widget->style->bg_gc[GTK_STATE_NORMAL];
blankstyle->light_gc[GTK_STATE_NORMAL] =
widget->style->bg_gc[GTK_STATE_NORMAL];
blankstyle->black_gc =
widget->style->bg_gc[GTK_STATE_NORMAL];
gtk_draw_polygon (blankstyle,
widget->window,
GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
points, 5,
FALSE);
gtk_style_unref(blankstyle);
/* Draw ticks */
if ((upper - lower) == 0)
return;
increment = (100*M_PI)/(dial->radius*dial->radius);
inc = (upper - lower);
while (inc < 100) inc *=10;
while (inc >= 1000) inc /=10;
last = -1;
for (i=0; i<=inc; i++)
{
theta = ((gfloat)i*M_PI/(18*inc/24.) - M_PI/6.);
if ((theta - last) < (increment))
continue;
last = theta;
s = sin(theta);
c = cos(theta);
tick_length = (i%(inc/10) == 0) ? dial->pointer_width : dial->pointer_width/2;
gdk_draw_line (widget->window,
widget->style->fg_gc[widget->state],
xc + c*(dial->radius - tick_length),
yc - s*(dial->radius - tick_length),
xc + c*dial->radius,
yc - s*dial->radius);
}
/* Draw pointer */
s = sin(dial->angle);
c = cos(dial->angle);
dial->last_angle = dial->angle;
points[0].x = xc + s*dial->pointer_width/2;
points[0].y = yc + c*dial->pointer_width/2;
points[1].x = xc + c*dial->radius;
points[1].y = yc - s*dial->radius;
points[2].x = xc - s*dial->pointer_width/2;
points[2].y = yc - c*dial->pointer_width/2;
points[3].x = xc - c*dial->radius/10;
points[3].y = yc + s*dial->radius/10;
points[4].x = points[0].x;
points[4].y = points[0].y;
gtk_draw_polygon (widget->style,
widget->window,
GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
points, 3,
points, 5,
TRUE);
return FALSE;

1
examples/gtkdial/gtkdial.h
View File

@ -59,6 +59,7 @@ struct _GtkDial
/* Current angle */
gfloat angle;
gfloat last_angle;
/* Old values from adjustment stored so we know when something changes */
gfloat old_value;

4
examples/helloworld/helloworld.c
View File

@ -50,7 +50,7 @@ int main( int argc,
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
/* When the window is given the "delete_event" signal (this is given
* by the window manager, usually by the 'close' option, or on the
* by the window manager, usually by the "close" option, or on the
* titlebar), we ask it to call the delete_event () function
* as defined above. The data passed to the callback
* function is NULL and is ignored in the callback function. */
@ -59,7 +59,7 @@ int main( int argc,
/* Here we connect the "destroy" event to a signal handler.
* This event occurs when we call gtk_widget_destroy() on the window,
* or if we return 'FALSE' in the "delete_event" callback. */
* or if we return FALSE in the "delete_event" callback. */
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (destroy), NULL);

9
examples/helloworld2/helloworld2.c
View File

@ -11,11 +11,12 @@ void callback( GtkWidget *widget,
}
/* another callback */
void delete_event( GtkWidget *widget,
gint delete_event( GtkWidget *widget,
GdkEvent *event,
gpointer data )
gpointer data )
{
gtk_main_quit ();
gtk_main_quit();
return(FALSE);
}
int main( int argc,
@ -33,7 +34,7 @@ int main( int argc,
/* Create a new window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
/* This is a new call, this just sets the title of our
/* This is a new call, which just sets the title of our
* new window to "Hello Buttons!" */
gtk_window_set_title (GTK_WINDOW (window), "Hello Buttons!");

2
examples/label/label.c
View File

@ -72,7 +72,7 @@ int main( int argc,
label = gtk_label_new ("This is an example of a line-wrapped, filled label. " \
"It should be taking "\
"up the entire width allocated to it. " \
"Here is a seneance to prove "\
"Here is a sentence to prove "\
"my point. Here is another sentence. "\
"Here comes the sun, do de do de do.\n"\
" This is a new paragraph.\n"\

34
examples/list/list.c
View File

@ -1,6 +1,6 @@
/* example-start list list.c */
/* Include the gtk+ header files
/* Include the GTK header files
* Include stdio.h, we need that for the printf() function
*/
#include <gtk/gtk.h>
@ -13,7 +13,7 @@ const gchar *list_item_data_key="list_item_data";
/* prototypes for signal handler that we are going to connect
* to the GtkList widget
* to the List widget
*/
static void sigh_print_selection( GtkWidget *gtklist,
gpointer func_data);
@ -25,8 +25,8 @@ static void sigh_button_event( GtkWidget *gtklist,
/* Main function to set up the user interface */
gint main (int argc,
gchar *argv[])
gint main( int argc,
gchar *argv[] )
{
GtkWidget *separator;
GtkWidget *window;
@ -41,7 +41,7 @@ gint main (int argc,
gchar buffer[64];
/* Initialize gtk+ (and subsequently gdk) */
/* Initialize GTK (and subsequently GDK) */
gtk_init(&argc, &argv);
@ -65,15 +65,15 @@ gint main (int argc,
gtk_container_add(GTK_CONTAINER(window), vbox);
gtk_widget_show(vbox);
/* This is the scrolled window to put the GtkList widget inside */
/* This is the scrolled window to put the List widget inside */
scrolled_window=gtk_scrolled_window_new(NULL, NULL);
gtk_widget_set_usize(scrolled_window, 250, 150);
gtk_container_add(GTK_CONTAINER(vbox), scrolled_window);
gtk_widget_show(scrolled_window);
/* Create the GtkList widget.
/* Create thekList widget.
* Connect the sigh_print_selection() signal handler
* function to the "selection_changed" signal of the GtkList
* function to the "selection_changed" signal of the List
* to print out the selected items each time the selection
* has changed */
gtklist=gtk_list_new();
@ -93,7 +93,7 @@ gint main (int argc,
gtk_container_add(GTK_CONTAINER(vbox), frame);
gtk_widget_show(frame);
/* Connect the sigh_button_event() signal handler to the GtkList
/* Connect the sigh_button_event() signal handler to the List
* which will handle the "arresting" of list items
*/
gtk_signal_connect(GTK_OBJECT(gtklist),
@ -106,7 +106,7 @@ gint main (int argc,
gtk_container_add(GTK_CONTAINER(vbox), separator);
gtk_widget_show(separator);
/* Finally create a button and connect it's "clicked" signal
/* Finally create a button and connect its "clicked" signal
* to the destruction of the window */
button=gtk_button_new_with_label("Close");
gtk_container_add(GTK_CONTAINER(vbox), button);
@ -117,8 +117,8 @@ gint main (int argc,
GTK_OBJECT(window));
/* Now we create 5 list items, each having it's own
* label and add them to the GtkList using gtk_container_add()
/* Now we create 5 list items, each having its own
* label and add them to the List using gtk_container_add()
* Also we query the text string from the label and
* associate it with the list_item_data_key for each list item
*/
@ -176,7 +176,7 @@ gint main (int argc,
}
/* This is the signal handler that got connected to button
* press/release events of the GtkList
* press/release events of the List
*/
void sigh_button_event( GtkWidget *gtklist,
GdkEventButton *event,
@ -218,7 +218,7 @@ void sigh_button_event( GtkWidget *gtklist,
g_list_free(free_list);
/* If we have a new prisoner, remove him from the
* GtkList and put him into the frame "Prison".
* List and put him into the frame "Prison".
* We need to unselect the item first.
*/
if (new_prisoner) {
@ -235,16 +235,16 @@ void sigh_button_event( GtkWidget *gtklist,
}
}
/* This is the signal handler that gets called if GtkList
/* This is the signal handler that gets called if List
* emits the "selection_changed" signal
*/
void sigh_print_selection( GtkWidget *gtklist,
gpointer func_data)
gpointer func_data )
{
GList *dlist;
/* Fetch the doubly linked list of selected items
* of the GtkList, remember to treat this as read-only!
* of the List, remember to treat this as read-only!
*/
dlist=GTK_LIST(gtklist)->selection;

82
examples/menu/itemfactory.c
View File

@ -4,8 +4,10 @@
#include <strings.h>
/* Obligatory basic callback */
static void print_hello(GtkWidget *w, gpointer data) {
g_message("Hello, World!\n");
static void print_hello( GtkWidget *w,
gpointer data )
{
g_message ("Hello, World!\n");
}
/* This is the GtkItemFactoryEntry structure used to generate new menus.
@ -27,31 +29,33 @@ static void print_hello(GtkWidget *w, gpointer data) {
"<RadioItem>" -> create a radio item
<path> -> path of a radio item to link against
"<Separator>" -> create a separator
"<Branch>" -> create an item to hold sub items
"<Branch>" -> create an item to hold sub items (optional)
"<LastBranch>" -> create a right justified branch
*/
static GtkItemFactoryEntry menu_items[] = {
{"/_File", NULL, NULL, 0, "<Branch>"},
{"/File/_New", "<control>N", print_hello, 0, NULL},
{"/File/_Open", "<control>O", print_hello, 0, NULL},
{"/File/_Save", "<control>S", print_hello, 0, NULL},
{"/File/Save _As", NULL, NULL, 0, NULL},
{"/File/sep1", NULL, NULL, 0, "<Separator>"},
{"/File/Quit", "<control>Q", gtk_main_quit, 0, NULL},
{"/_Options", NULL, NULL, 0, "<Branch>"},
{"/Options/Test", NULL, NULL, 0, NULL},
{"/_Help", NULL, NULL, 0, "<LastBranch>"},
{"/_Help/About", NULL, NULL, 0, NULL},
{ "/_File", NULL, NULL, 0, "<Branch>" },
{ "/File/_New", "<control>N", print_hello, 0, NULL },
{ "/File/_Open", "<control>O", print_hello, 0, NULL },
{ "/File/_Save", "<control>S", print_hello, 0, NULL },
{ "/File/Save _As", NULL, NULL, 0, NULL },
{ "/File/sep1", NULL, NULL, 0, "<Separator>" },
{ "/File/Quit", "<control>Q", gtk_main_quit, 0, NULL },
{ "/_Options", NULL, NULL, 0, "<Branch>" },
{ "/Options/Test", NULL, NULL, 0, NULL },
{ "/_Help", NULL, NULL, 0, "<LastBranch>" },
{ "/_Help/About", NULL, NULL, 0, NULL },
};
void get_main_menu(GtkWidget *window, GtkWidget ** menubar) {
int nmenu_items = sizeof(menu_items) / sizeof(menu_items[0]);
void get_main_menu( GtkWidget *window,
GtkWidget **menubar )
{
GtkItemFactory *item_factory;
GtkAccelGroup *accel_group;
gint nmenu_items = sizeof (menu_items) / sizeof (menu_items[0]);
accel_group = gtk_accel_group_new();
accel_group = gtk_accel_group_new ();
/* This function initializes the item factory.
Param 1: The type of menu - can be GTK_TYPE_MENU_BAR, GTK_TYPE_MENU,
@ -61,47 +65,49 @@ void get_main_menu(GtkWidget *window, GtkWidget ** menubar) {
the accelerator table while generating menus.
*/
item_factory = gtk_item_factory_new(GTK_TYPE_MENU_BAR, "<main>",
item_factory = gtk_item_factory_new (GTK_TYPE_MENU_BAR, "<main>",
accel_group);
/* This function generates the menu items. Pass the item factory,
the number of items in the array, the array itself, and any
callback data for the the menu items. */
gtk_item_factory_create_items(item_factory, nmenu_items, menu_items, NULL);
gtk_item_factory_create_items (item_factory, nmenu_items, menu_items, NULL);
/* Attach the new accelerator group to the window. */
gtk_accel_group_attach (accel_group, GTK_OBJECT (window));
gtk_window_add_accel_group (GTK_WINDOW (window), accel_group);
if (menubar)
/* Finally, return the actual menu bar created by the item factory. */
*menubar = gtk_item_factory_get_widget(item_factory, "<main>");
*menubar = gtk_item_factory_get_widget (item_factory, "<main>");
}
int main(int argc, char *argv[]) {
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *main_vbox;
GtkWidget *menubar;
gtk_init(&argc, &argv);
gtk_init (&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_signal_connect(GTK_OBJECT(window), "destroy",
GTK_SIGNAL_FUNC(gtk_main_quit),
"WM destroy");
gtk_window_set_title(GTK_WINDOW(window), "Item Factory");
gtk_widget_set_usize(GTK_WIDGET(window), 300, 200);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit),
"WM destroy");
gtk_window_set_title (GTK_WINDOW(window), "Item Factory");
gtk_widget_set_usize (GTK_WIDGET(window), 300, 200);
main_vbox = gtk_vbox_new(FALSE, 1);
gtk_container_border_width(GTK_CONTAINER(main_vbox), 1);
gtk_container_add(GTK_CONTAINER(window), main_vbox);
gtk_widget_show(main_vbox);
main_vbox = gtk_vbox_new (FALSE, 1);
gtk_container_border_width (GTK_CONTAINER (main_vbox), 1);
gtk_container_add (GTK_CONTAINER (window), main_vbox);
gtk_widget_show (main_vbox);
get_main_menu(window, &menubar);
gtk_box_pack_start(GTK_BOX(main_vbox), menubar, FALSE, TRUE, 0);
gtk_widget_show(menubar);
get_main_menu (window, &menubar);
gtk_box_pack_start (GTK_BOX (main_vbox), menubar, FALSE, TRUE, 0);
gtk_widget_show (menubar);
gtk_widget_show(window);
gtk_main();
gtk_widget_show (window);
gtk_main ();
return(0);
}

72
examples/menu/menu.c
View File

@ -5,7 +5,8 @@
static gint button_press (GtkWidget *, GdkEvent *);
static void menuitem_response (gchar *);
int main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
@ -21,17 +22,17 @@ int main (int argc, char *argv[])
gtk_init (&argc, &argv);
/* create a new window */
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_widget_set_usize( GTK_WIDGET (window), 200, 100);
gtk_window_set_title(GTK_WINDOW (window), "GTK Menu Test");
gtk_signal_connect(GTK_OBJECT (window), "delete_event",
(GtkSignalFunc) gtk_main_quit, NULL);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_set_usize (GTK_WIDGET (window), 200, 100);
gtk_window_set_title (GTK_WINDOW (window), "GTK Menu Test");
gtk_signal_connect (GTK_OBJECT (window), "delete_event",
(GtkSignalFunc) gtk_main_quit, NULL);
/* Init the menu-widget, and remember -- never
* gtk_show_widget() the menu widget!!
* This is the menu that holds the menu items, the one that
* will pop up when you click on the "Root Menu" in the app */
menu = gtk_menu_new();
menu = gtk_menu_new ();
/* Next we make a little loop that makes three menu-entries for "test-menu".
* Notice the call to gtk_menu_append. Here we are adding a list of
@ -39,64 +40,64 @@ int main (int argc, char *argv[])
* signal on each of the menu items and setup a callback for it,
* but it's omitted here to save space. */
for(i = 0; i < 3; i++)
for (i = 0; i < 3; i++)
{
/* Copy the names to the buf. */
sprintf(buf, "Test-undermenu - %d", i);
sprintf (buf, "Test-undermenu - %d", i);
/* Create a new menu-item with a name... */
menu_items = gtk_menu_item_new_with_label(buf);
menu_items = gtk_menu_item_new_with_label (buf);
/* ...and add it to the menu. */
gtk_menu_append(GTK_MENU (menu), menu_items);
gtk_menu_append (GTK_MENU (menu), menu_items);
/* Do something interesting when the menuitem is selected */
gtk_signal_connect_object(GTK_OBJECT(menu_items), "activate",
GTK_SIGNAL_FUNC(menuitem_response), (gpointer) g_strdup(buf));
gtk_signal_connect_object (GTK_OBJECT (menu_items), "activate",
GTK_SIGNAL_FUNC (menuitem_response), (gpointer) g_strdup (buf));
/* Show the widget */
gtk_widget_show(menu_items);
gtk_widget_show (menu_items);
}
/* This is the root menu, and will be the label
* displayed on the menu bar. There won't be a signal handler attached,
* as it only pops up the rest of the menu when pressed. */
root_menu = gtk_menu_item_new_with_label("Root Menu");
root_menu = gtk_menu_item_new_with_label ("Root Menu");
gtk_widget_show(root_menu);
gtk_widget_show (root_menu);
/* Now we specify that we want our newly created "menu" to be the menu
* for the "root menu" */
gtk_menu_item_set_submenu(GTK_MENU_ITEM (root_menu), menu);
gtk_menu_item_set_submenu (GTK_MENU_ITEM (root_menu), menu);
/* A vbox to put a menu and a button in: */
vbox = gtk_vbox_new(FALSE, 0);
gtk_container_add(GTK_CONTAINER(window), vbox);
gtk_widget_show(vbox);
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), vbox);
gtk_widget_show (vbox);
/* Create a menu-bar to hold the menus and add it to our main window */
menu_bar = gtk_menu_bar_new();
gtk_box_pack_start(GTK_BOX(vbox), menu_bar, FALSE, FALSE, 2);
gtk_widget_show(menu_bar);
menu_bar = gtk_menu_bar_new ();
gtk_box_pack_start (GTK_BOX (vbox), menu_bar, FALSE, FALSE, 2);
gtk_widget_show (menu_bar);
/* Create a button to which to attach menu as a popup */
button = gtk_button_new_with_label("press me");
gtk_signal_connect_object(GTK_OBJECT(button), "event",
GTK_SIGNAL_FUNC (button_press), GTK_OBJECT(menu));
gtk_box_pack_end(GTK_BOX(vbox), button, TRUE, TRUE, 2);
gtk_widget_show(button);
button = gtk_button_new_with_label ("press me");
gtk_signal_connect_object (GTK_OBJECT (button), "event",
GTK_SIGNAL_FUNC (button_press), GTK_OBJECT (menu));
gtk_box_pack_end (GTK_BOX (vbox), button, TRUE, TRUE, 2);
gtk_widget_show (button);
/* And finally we append the menu-item to the menu-bar -- this is the
* "root" menu-item I have been raving about =) */
gtk_menu_bar_append(GTK_MENU_BAR (menu_bar), root_menu);
gtk_menu_bar_append (GTK_MENU_BAR (menu_bar), root_menu);
/* always display the window as the last step so it all splashes on
* the screen at once. */
gtk_widget_show(window);
gtk_widget_show (window);
gtk_main ();
return 0;
return(0);
}
/* Respond to a button-press by posting a menu passed in as widget.
@ -105,12 +106,13 @@ int main (int argc, char *argv[])
* the button that was pressed.
*/
static gint button_press (GtkWidget *widget, GdkEvent *event)
static gint button_press( GtkWidget *widget,
GdkEvent *event )
{
if (event->type == GDK_BUTTON_PRESS) {
GdkEventButton *bevent = (GdkEventButton *) event;
gtk_menu_popup (GTK_MENU(widget), NULL, NULL, NULL, NULL,
gtk_menu_popup (GTK_MENU (widget), NULL, NULL, NULL, NULL,
bevent->button, bevent->time);
/* Tell calling code that we have handled this event; the buck
* stops here. */
@ -124,8 +126,8 @@ static gint button_press (GtkWidget *widget, GdkEvent *event)
/* Print a string when a menu item is selected */
static void menuitem_response (gchar *string)
static void menuitem_response( gchar *string )
{
printf("%s\n", string);
printf ("%s\n", string);
}
/* example-end */

28
examples/notebook/notebook.c
View File

@ -3,13 +3,15 @@
#include <gtk/gtk.h>
/* This function rotates the position of the tabs */
void rotate_book (GtkButton *button, GtkNotebook *notebook)
void rotate_book( GtkButton *button,
GtkNotebook *notebook )
{
gtk_notebook_set_tab_pos (notebook, (notebook->tab_pos +1) %4);
}
/* Add/Remove the page tabs and the borders */
void tabsborder_book (GtkButton *button, GtkNotebook *notebook)
void tabsborder_book( GtkButton *button,
GtkNotebook *notebook )
{
gint tval = FALSE;
gint bval = FALSE;
@ -23,7 +25,8 @@ void tabsborder_book (GtkButton *button, GtkNotebook *notebook)
}
/* Remove a page from the notebook */
void remove_book (GtkButton *button, GtkNotebook *notebook)
void remove_book( GtkButton *button,
GtkNotebook *notebook )
{
gint page;
@ -34,12 +37,16 @@ void remove_book (GtkButton *button, GtkNotebook *notebook)
gtk_widget_draw(GTK_WIDGET(notebook), NULL);
}
void delete (GtkWidget *widget, GtkWidget *event, gpointer data)
gint delete( GtkWidget *widget,
GtkWidget *event,
gpointer data )
{
gtk_main_quit ();
gtk_main_quit();
return(FALSE);
}
int main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *button;
@ -70,7 +77,7 @@ int main (int argc, char *argv[])
gtk_table_attach_defaults(GTK_TABLE(table), notebook, 0,6,0,1);
gtk_widget_show(notebook);
/* Lets append a bunch of pages to the notebook */
/* Let's append a bunch of pages to the notebook */
for (i=0; i < 5; i++) {
sprintf(bufferf, "Append Frame %d", i+1);
sprintf(bufferl, "Page %d", i+1);
@ -88,7 +95,7 @@ int main (int argc, char *argv[])
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), frame, label);
}
/* Now lets add a page to a specific spot */
/* Now let's add a page to a specific spot */
checkbutton = gtk_check_button_new_with_label ("Check me please!");
gtk_widget_set_usize(checkbutton, 100, 75);
gtk_widget_show (checkbutton);
@ -96,7 +103,7 @@ int main (int argc, char *argv[])
label = gtk_label_new ("Add page");
gtk_notebook_insert_page (GTK_NOTEBOOK (notebook), checkbutton, label, 2);
/* Now finally lets prepend pages to the notebook */
/* Now finally let's prepend pages to the notebook */
for (i=0; i < 5; i++) {
sprintf(bufferf, "Prepend Frame %d", i+1);
sprintf(bufferl, "PPage %d", i+1);
@ -140,7 +147,8 @@ int main (int argc, char *argv[])
button = gtk_button_new_with_label ("tab position");
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) rotate_book, GTK_OBJECT(notebook));
(GtkSignalFunc) rotate_book,
GTK_OBJECT(notebook));
gtk_table_attach_defaults(GTK_TABLE(table), button, 3,4,1,2);
gtk_widget_show(button);

33
examples/packbox/packbox.c
View File

@ -1,13 +1,15 @@
/* example-start packbox packbox.c */
#include <stdio.h>
#include <stdlib.h>
#include "gtk/gtk.h"
void delete_event( GtkWidget *widget,
gint delete_event( GtkWidget *widget,
GdkEvent *event,
gpointer data )
gpointer data )
{
gtk_main_quit ();
gtk_main_quit();
return(FALSE);
}
/* Make a new hbox filled with button-labels. Arguments for the
@ -82,7 +84,7 @@ int main( int argc,
if (argc != 2) {
fprintf (stderr, "usage: packbox num, where num is 1, 2, or 3.\n");
/* this just does cleanup in GTK, and exits with an exit status of 1. */
/* This just does cleanup in GTK and exits with an exit status of 1. */
gtk_exit (1);
}
@ -91,8 +93,8 @@ int main( int argc,
/* Create our window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
/* You should always remember to connect the destroy signal to the
* main window. This is very important for proper intuitive
/* You should always remember to connect the delete_event signal
* to the main window. This is very important for proper intuitive
* behavior */
gtk_signal_connect (GTK_OBJECT (window), "delete_event",
GTK_SIGNAL_FUNC (delete_event), NULL);
@ -128,7 +130,7 @@ int main( int argc,
gtk_widget_show (box2);
/* Call our make box function - homogeneous = FALSE, spacing = 0,
* expand = FALSE, fill = FALSE, padding = 0 */
* expand = TRUE, fill = FALSE, padding = 0 */
box2 = make_box (FALSE, 0, TRUE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, FALSE, 0);
gtk_widget_show (box2);
@ -142,8 +144,8 @@ int main( int argc,
* but they are quite simple. */
separator = gtk_hseparator_new ();
/* Cack the separator into the vbox. Remember each of these
* widgets are being packed into a vbox, so they'll be stacked
/* Pack the separator into the vbox. Remember each of these
* widgets is being packed into a vbox, so they'll be stacked
* vertically. */
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
gtk_widget_show (separator);
@ -166,7 +168,8 @@ int main( int argc,
/* Another new separator. */
separator = gtk_hseparator_new ();
/* The last 3 arguments to gtk_box_pack_start are: expand, fill, padding. */
/* The last 3 arguments to gtk_box_pack_start are:
* expand, fill, padding. */
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
gtk_widget_show (separator);
@ -192,7 +195,8 @@ int main( int argc,
gtk_widget_show (box2);
separator = gtk_hseparator_new ();
/* The last 3 arguments to gtk_box_pack_start are: expand, fill, padding. */
/* The last 3 arguments to gtk_box_pack_start are:
* expand, fill, padding. */
gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 5);
gtk_widget_show (separator);
@ -255,14 +259,13 @@ int main( int argc,
/* Our quit button. */
button = gtk_button_new_with_label ("Quit");
/* Setup the signal to destroy the window. Remember that this will send
* the "destroy" signal to the window which will be caught by our signal
* handler as defined above. */
/* Setup the signal to terminate the program when the button is clicked */
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (gtk_main_quit),
GTK_OBJECT (window));
/* Pack the button into the quitbox.
* The last 3 arguments to gtk_box_pack_start are: expand, fill, padding. */
* The last 3 arguments to gtk_box_pack_start are:
* expand, fill, padding. */
gtk_box_pack_start (GTK_BOX (quitbox), button, TRUE, FALSE, 0);
/* pack the quitbox into the vbox (box1) */
gtk_box_pack_start (GTK_BOX (box1), quitbox, FALSE, FALSE, 0);

18
examples/paned/paned.c
View File

@ -3,8 +3,7 @@
#include <gtk/gtk.h>
/* Create the list of "messages" */
GtkWidget *
create_list (void)
GtkWidget *create_list( void )
{
GtkWidget *scrolled_window;
@ -22,8 +21,8 @@ create_list (void)
/* Create a new list and put it in the scrolled window */
list = gtk_list_new ();
gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (scrolled_window),
list);
gtk_scrolled_window_add_with_viewport (
GTK_SCROLLED_WINDOW (scrolled_window), list);
gtk_widget_show (list);
/* Add some messages to the window */
@ -44,8 +43,8 @@ when our window is realized. We could also force our window to be
realized with gtk_widget_realize, but it would have to be part of
a hierarchy first */
void
realize_text (GtkWidget *text, gpointer data)
void realize_text( GtkWidget *text,
gpointer data )
{
gtk_text_freeze (GTK_TEXT (text));
gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL,
@ -62,8 +61,7 @@ realize_text (GtkWidget *text, gpointer data)
}
/* Create a scrolled text area that displays a "message" */
GtkWidget *
create_text (void)
GtkWidget *create_text( void )
{
GtkWidget *table;
GtkWidget *text;
@ -100,8 +98,8 @@ create_text (void)
return table;
}
int
main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *vpaned;

14
examples/pixmap/pixmap.c
View File

@ -29,18 +29,24 @@ static const char * xpm_data[] = {
/* when invoked (via signal delete_event), terminates the application.
*/
void close_application( GtkWidget *widget, GdkEvent *event, gpointer data ) {
gint close_application( GtkWidget *widget,
GdkEvent *event,
gpointer data )
{
gtk_main_quit();
return(FALSE);
}
/* is invoked when the button is clicked. It just prints a message.
*/
void button_clicked( GtkWidget *widget, gpointer data ) {
printf( "button clicked\n" );
void button_clicked( GtkWidget *widget,
gpointer data ) {
g_print( "button clicked\n" );
}
int main( int argc, char *argv[] )
int main( int argc,
char *argv[] )
{
/* GtkWidget is the storage type for widgets */
GtkWidget *window, *pixmapwid, *button;

2
examples/progressbar/progressbar.c
View File

@ -115,7 +115,7 @@ int main( int argc,
gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 5);
gtk_widget_show(align);
/* Create a GtkAdjusment object to hold the range of the
/* Create a Adjusment object to hold the range of the
* progress bar */
adj = (GtkAdjustment *) gtk_adjustment_new (0, 1, 150, 0, 0, 0);

5
examples/radiobuttons/radiobuttons.c
View File

@ -3,11 +3,12 @@
#include <gtk/gtk.h>
#include <glib.h>
void close_application( GtkWidget *widget,
gint close_application( GtkWidget *widget,
GdkEvent *event,
gpointer data )
gpointer data )
{
gtk_main_quit();
return(FALSE);
}
int main( int argc,

6
examples/rangewidgets/rangewidgets.c
View File

@ -102,7 +102,7 @@ void create_range_controls( void )
gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0);
gtk_widget_show (box2);
/* calue, lower, upper, step_increment, page_increment, page_size */
/* value, lower, upper, step_increment, page_increment, page_size */
/* Note that the page_size value only makes a difference for
* scrollbar widgets, and the highest value you'll get is actually
* (upper - page_size). */
@ -218,7 +218,7 @@ void create_range_controls( void )
box2 = gtk_hbox_new (FALSE, 10);
gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
/* A GtkHScale widget for adjusting the number of digits on the
/* An HScale widget for adjusting the number of digits on the
* sample scales. */
label = gtk_label_new ("Scale Digits:");
gtk_box_pack_start (GTK_BOX (box2), label, FALSE, FALSE, 0);
@ -238,7 +238,7 @@ void create_range_controls( void )
box2 = gtk_hbox_new (FALSE, 10);
gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
/* And, one last GtkHScale widget for adjusting the page size of the
/* And, one last HScale widget for adjusting the page size of the
* scrollbar. */
label = gtk_label_new ("Scrollbar Page Size:");
gtk_box_pack_start (GTK_BOX (box2), label, FALSE, FALSE, 0);

28
examples/rulers/rulers.c
View File

@ -8,12 +8,17 @@
#define YSIZE 400
/* This routine gets control when the close button is clicked */
void close_application( GtkWidget *widget, GdkEvent *event, gpointer data ) {
gint close_application( GtkWidget *widget,
GdkEvent *event,
gpointer data )
{
gtk_main_quit();
return(FALSE);
}
/* The main routine */
int main( int argc, char *argv[] ) {
int main( int argc,
char *argv[] ) {
GtkWidget *window, *table, *area, *hrule, *vrule;
/* Initialize GTK and create the main window */
@ -32,28 +37,33 @@ int main( int argc, char *argv[] ) {
gtk_drawing_area_size( (GtkDrawingArea *)area, XSIZE, YSIZE );
gtk_table_attach( GTK_TABLE(table), area, 1, 2, 1, 2,
GTK_EXPAND|GTK_FILL, GTK_FILL, 0, 0 );
gtk_widget_set_events( area, GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK );
gtk_widget_set_events( area, GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK );
/* The horizontal ruler goes on top. As the mouse moves across the drawing area,
* a motion_notify_event is passed to the appropriate event handler for the ruler. */
/* The horizontal ruler goes on top. As the mouse moves across the
* drawing area, a motion_notify_event is passed to the
* appropriate event handler for the ruler. */
hrule = gtk_hruler_new();
gtk_ruler_set_metric( GTK_RULER(hrule), GTK_PIXELS );
gtk_ruler_set_range( GTK_RULER(hrule), 7, 13, 0, 20 );
gtk_signal_connect_object( GTK_OBJECT(area), "motion_notify_event",
(GtkSignalFunc)EVENT_METHOD(hrule, motion_notify_event),
(GtkSignalFunc)EVENT_METHOD(hrule,
motion_notify_event),
GTK_OBJECT(hrule) );
/* GTK_WIDGET_CLASS(GTK_OBJECT(hrule)->klass)->motion_notify_event, */
gtk_table_attach( GTK_TABLE(table), hrule, 1, 2, 0, 1,
GTK_EXPAND|GTK_SHRINK|GTK_FILL, GTK_FILL, 0, 0 );
/* The vertical ruler goes on the left. As the mouse moves across the drawing area,
* a motion_notify_event is passed to the appropriate event handler for the ruler. */
/* The vertical ruler goes on the left. As the mouse moves across
* the drawing area, a motion_notify_event is passed to the
* appropriate event handler for the ruler. */
vrule = gtk_vruler_new();
gtk_ruler_set_metric( GTK_RULER(vrule), GTK_PIXELS );
gtk_ruler_set_range( GTK_RULER(vrule), 0, YSIZE, 10, YSIZE );
gtk_signal_connect_object( GTK_OBJECT(area), "motion_notify_event",
(GtkSignalFunc)
GTK_WIDGET_CLASS(GTK_OBJECT(vrule)->klass)->motion_notify_event,
GTK_WIDGET_CLASS(GTK_OBJECT(vrule)->klass)->
motion_notify_event,
GTK_OBJECT(vrule) );
gtk_table_attach( GTK_TABLE(table), vrule, 0, 1, 1, 2,
GTK_FILL, GTK_EXPAND|GTK_SHRINK|GTK_FILL, 0, 0 );

28
examples/scribble-simple/scribble-simple.c
View File

@ -25,8 +25,8 @@
static GdkPixmap *pixmap = NULL;
/* Create a new backing pixmap of the appropriate size */
static gint
configure_event (GtkWidget *widget, GdkEventConfigure *event)
static gint configure_event( GtkWidget *widget,
GdkEventConfigure *event )
{
if (pixmap)
gdk_pixmap_unref(pixmap);
@ -46,8 +46,8 @@ configure_event (GtkWidget *widget, GdkEventConfigure *event)
}
/* Redraw the screen from the backing pixmap */
static gint
expose_event (GtkWidget *widget, GdkEventExpose *event)
static gint expose_event( GtkWidget *widget,
GdkEventExpose *event )
{
gdk_draw_pixmap(widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
@ -60,8 +60,9 @@ expose_event (GtkWidget *widget, GdkEventExpose *event)
}
/* Draw a rectangle on the screen */
static void
draw_brush (GtkWidget *widget, gdouble x, gdouble y)
static void draw_brush( GtkWidget *widget,
gdouble x,
gdouble y)
{
GdkRectangle update_rect;
@ -77,8 +78,8 @@ draw_brush (GtkWidget *widget, gdouble x, gdouble y)
gtk_widget_draw (widget, &update_rect);
}
static gint
button_press_event (GtkWidget *widget, GdkEventButton *event)
static gint button_press_event( GtkWidget *widget,
GdkEventButton *event )
{
if (event->button == 1 && pixmap != NULL)
draw_brush (widget, event->x, event->y);
@ -86,8 +87,8 @@ button_press_event (GtkWidget *widget, GdkEventButton *event)
return TRUE;
}
static gint
motion_notify_event (GtkWidget *widget, GdkEventMotion *event)
static gint motion_notify_event( GtkWidget *widget,
GdkEventMotion *event )
{
int x, y;
GdkModifierType state;
@ -107,14 +108,13 @@ motion_notify_event (GtkWidget *widget, GdkEventMotion *event)
return TRUE;
}
void
quit ()
void quit ()
{
gtk_exit (0);
}
int
main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *drawing_area;

8
examples/scribble-xinput/Makefile Normal file
View File

@ -0,0 +1,8 @@
CC = gcc
scribble-xinput: scribble-xinput.c
$(CC) `gtk-config --cflags` scribble-xinput.c -o scribble-xinput `gtk-config --libs`
clean:
rm -f *.o scribble-xinput

270
examples/scribble-xinput/scribble-xinput.c Normal file
View File

@ -0,0 +1,270 @@
/* example-start scribble-xinput scribble-xinput.c */
/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <gtk/gtk.h>
/* Backing pixmap for drawing area */
static GdkPixmap *pixmap = NULL;
/* Create a new backing pixmap of the appropriate size */
static gint
configure_event (GtkWidget *widget, GdkEventConfigure *event)
{
if (pixmap)
gdk_pixmap_unref(pixmap);
pixmap = gdk_pixmap_new(widget->window,
widget->allocation.width,
widget->allocation.height,
-1);
gdk_draw_rectangle (pixmap,
widget->style->white_gc,
TRUE,
0, 0,
widget->allocation.width,
widget->allocation.height);
return TRUE;
}
/* Redraw the screen from the backing pixmap */
static gint
expose_event (GtkWidget *widget, GdkEventExpose *event)
{
gdk_draw_pixmap(widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
pixmap,
event->area.x, event->area.y,
event->area.x, event->area.y,
event->area.width, event->area.height);
return FALSE;
}
/* Draw a rectangle on the screen, size depending on pressure,
and color on the type of device */
static void
draw_brush (GtkWidget *widget, GdkInputSource source,
gdouble x, gdouble y, gdouble pressure)
{
GdkGC *gc;
GdkRectangle update_rect;
switch (source)
{
case GDK_SOURCE_MOUSE:
gc = widget->style->dark_gc[GTK_WIDGET_STATE (widget)];
break;
case GDK_SOURCE_PEN:
gc = widget->style->black_gc;
break;
case GDK_SOURCE_ERASER:
gc = widget->style->white_gc;
break;
default:
gc = widget->style->light_gc[GTK_WIDGET_STATE (widget)];
}
update_rect.x = x - 10 * pressure;
update_rect.y = y - 10 * pressure;
update_rect.width = 20 * pressure;
update_rect.height = 20 * pressure;
gdk_draw_rectangle (pixmap, gc, TRUE,
update_rect.x, update_rect.y,
update_rect.width, update_rect.height);
gtk_widget_draw (widget, &update_rect);
}
static void
print_button_press (guint32 deviceid)
{
GList *tmp_list;
/* gdk_input_list_devices returns an internal list, so we shouldn't
free it afterwards */
tmp_list = gdk_input_list_devices();
while (tmp_list)
{
GdkDeviceInfo *info = (GdkDeviceInfo *)tmp_list->data;
if (info->deviceid == deviceid)
{
g_print("Button press on device '%s'\n", info->name);
return;
}
tmp_list = tmp_list->next;
}
}
static gint
button_press_event (GtkWidget *widget, GdkEventButton *event)
{
print_button_press (event->deviceid);
if (event->button == 1 && pixmap != NULL)
draw_brush (widget, event->source, event->x, event->y, event->pressure);
return TRUE;
}
static gint
motion_notify_event (GtkWidget *widget, GdkEventMotion *event)
{
gdouble x, y;
gdouble pressure;
GdkModifierType state;
if (event->is_hint)
gdk_input_window_get_pointer (event->window, event->deviceid,
&x, &y, &pressure,
NULL, NULL, &state);
else
{
x = event->x;
y = event->y;
pressure = event->pressure;
state = event->state;
}
if (state & GDK_BUTTON1_MASK && pixmap != NULL)
draw_brush (widget, event->source, x, y, pressure);
return TRUE;
}
void
input_dialog_destroy (GtkWidget *w, gpointer data)
{
*((GtkWidget **)data) = NULL;
}
void
create_input_dialog ()
{
static GtkWidget *inputd = NULL;
if (!inputd)
{
inputd = gtk_input_dialog_new();
gtk_signal_connect (GTK_OBJECT(inputd), "destroy",
(GtkSignalFunc)input_dialog_destroy, &inputd);
gtk_signal_connect_object (GTK_OBJECT(GTK_INPUT_DIALOG(inputd)->close_button),
"clicked",
(GtkSignalFunc)gtk_widget_hide,
GTK_OBJECT(inputd));
gtk_widget_hide ( GTK_INPUT_DIALOG(inputd)->save_button);
gtk_widget_show (inputd);
}
else
{
if (!GTK_WIDGET_MAPPED(inputd))
gtk_widget_show(inputd);
else
gdk_window_raise(inputd->window);
}
}
void
quit ()
{
gtk_exit (0);
}
int
main (int argc, char *argv[])
{
GtkWidget *window;
GtkWidget *drawing_area;
GtkWidget *vbox;
GtkWidget *button;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_set_name (window, "Test Input");
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), vbox);
gtk_widget_show (vbox);
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (quit), NULL);
/* Create the drawing area */
drawing_area = gtk_drawing_area_new ();
gtk_drawing_area_size (GTK_DRAWING_AREA (drawing_area), 200, 200);
gtk_box_pack_start (GTK_BOX (vbox), drawing_area, TRUE, TRUE, 0);
gtk_widget_show (drawing_area);
/* Signals used to handle backing pixmap */
gtk_signal_connect (GTK_OBJECT (drawing_area), "expose_event",
(GtkSignalFunc) expose_event, NULL);
gtk_signal_connect (GTK_OBJECT(drawing_area),"configure_event",
(GtkSignalFunc) configure_event, NULL);
/* Event signals */
gtk_signal_connect (GTK_OBJECT (drawing_area), "motion_notify_event",
(GtkSignalFunc) motion_notify_event, NULL);
gtk_signal_connect (GTK_OBJECT (drawing_area), "button_press_event",
(GtkSignalFunc) button_press_event, NULL);
gtk_widget_set_events (drawing_area, GDK_EXPOSURE_MASK
| GDK_LEAVE_NOTIFY_MASK
| GDK_BUTTON_PRESS_MASK
| GDK_POINTER_MOTION_MASK
| GDK_POINTER_MOTION_HINT_MASK);
/* The following call enables tracking and processing of extension
events for the drawing area */
gtk_widget_set_extension_events (drawing_area, GDK_EXTENSION_EVENTS_CURSOR);
/* .. And some buttons */
button = gtk_button_new_with_label ("Input Dialog");
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (create_input_dialog), NULL);
gtk_widget_show (button);
button = gtk_button_new_with_label ("Quit");
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (gtk_widget_destroy),
GTK_OBJECT (window));
gtk_widget_show (button);
gtk_widget_show (window);
gtk_main ();
return 0;
}
/* example-end */

14
examples/scrolledwin/scrolledwin.c
View File

@ -2,12 +2,14 @@
#include <gtk/gtk.h>
void destroy(GtkWidget *widget, gpointer data)
void destroy( GtkWidget *widget,
gpointer data )
{
gtk_main_quit();
}
int main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
static GtkWidget *window;
GtkWidget *scrolled_window;
@ -19,9 +21,7 @@ int main (int argc, char *argv[])
gtk_init (&argc, &argv);
/* Create a new dialog window for the scrolled window to be
* packed into. A dialog is just like a normal window except it has a
* vbox and a horizontal separator packed into it. It's just a shortcut
* for creating dialogs */
* packed into. */
window = gtk_dialog_new ();
gtk_signal_connect (GTK_OBJECT (window), "destroy",
(GtkSignalFunc) destroy, NULL);
@ -54,8 +54,8 @@ int main (int argc, char *argv[])
gtk_table_set_col_spacings (GTK_TABLE (table), 10);
/* pack the table into the scrolled window */
gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (scrolled_window),
table);
gtk_scrolled_window_add_with_viewport (
GTK_SCROLLED_WINDOW (scrolled_window), table);
gtk_widget_show (table);
/* this simply creates a grid of toggle buttons on the table

20
examples/selection/gettargets.c
View File

@ -2,13 +2,13 @@
#include <gtk/gtk.h>
void selection_received (GtkWidget *widget,
GtkSelectionData *selection_data,
gpointer data);
void selection_received( GtkWidget *widget,
GtkSelectionData *selection_data,
gpointer data );
/* Signal handler invoked when user clicks on the "Get Targets" button */
void
get_targets (GtkWidget *widget, gpointer data)
void get_targets( GtkWidget *widget,
gpointer data )
{
static GdkAtom targets_atom = GDK_NONE;
@ -22,9 +22,9 @@ get_targets (GtkWidget *widget, gpointer data)
}
/* Signal handler called when the selections owner returns the data */
void
selection_received (GtkWidget *widget, GtkSelectionData *selection_data,
gpointer data)
void selection_received( GtkWidget *widget,
GtkSelectionData *selection_data,
gpointer data )
{
GdkAtom *atoms;
GList *item_list;
@ -60,8 +60,8 @@ selection_received (GtkWidget *widget, GtkSelectionData *selection_data,
return;
}
int
main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *button;

35
examples/selection/setselection.c
View File

@ -4,8 +4,8 @@
#include <time.h>
/* Callback when the user toggles the selection */
void
selection_toggled (GtkWidget *widget, gint *have_selection)
void selection_toggled( GtkWidget *widget,
gint *have_selection )
{
if (GTK_TOGGLE_BUTTON(widget)->active)
{
@ -32,9 +32,9 @@ selection_toggled (GtkWidget *widget, gint *have_selection)
}
/* Called when another application claims the selection */
gint
selection_clear (GtkWidget *widget, GdkEventSelection *event,
gint *have_selection)
gint selection_clear( GtkWidget *widget,
GdkEventSelection *event,
gint *have_selection )
{
*have_selection = FALSE;
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON(widget), FALSE);
@ -43,15 +43,16 @@ selection_clear (GtkWidget *widget, GdkEventSelection *event,
}
/* Supplies the current time as the selection. */
void
selection_handle (GtkWidget *widget,
GtkSelectionData *selection_data,
gpointer data)
void selection_handle( GtkWidget *widget,
GtkSelectionData *selection_data,
guint info,
guint time_stamp,
gpointer data )
{
gchar *timestr;
time_t current_time;
current_time = time (NULL);
current_time = time(NULL);
timestr = asctime (localtime(&current_time));
/* When we return a single string, it should not be null terminated.
That will be done for us */
@ -60,11 +61,10 @@ selection_handle (GtkWidget *widget,
8, timestr, strlen(timestr));
}
int
main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *selection_button;
static int have_selection = FALSE;
@ -91,9 +91,12 @@ main (int argc, char *argv[])
gtk_signal_connect (GTK_OBJECT(selection_button), "selection_clear_event",
GTK_SIGNAL_FUNC (selection_clear), &have_selection);
gtk_selection_add_handler (selection_button, GDK_SELECTION_PRIMARY,
GDK_SELECTION_TYPE_STRING,
selection_handle, NULL);
gtk_selection_add_target (selection_button,
GDK_SELECTION_PRIMARY,
GDK_SELECTION_TYPE_STRING,
1);
gtk_signal_connect (GTK_OBJECT(selection_button), "selection_get",
GTK_SIGNAL_FUNC (selection_handle), &have_selection);
gtk_widget_show (selection_button);
gtk_widget_show (window);

12
examples/statusbar/statusbar.c
View File

@ -5,7 +5,8 @@
GtkWidget *status_bar;
void push_item (GtkWidget *widget, gpointer data)
void push_item( GtkWidget *widget,
gpointer data )
{
static int count = 1;
char buff[20];
@ -16,13 +17,15 @@ void push_item (GtkWidget *widget, gpointer data)
return;
}
void pop_item (GtkWidget *widget, gpointer data)
void pop_item( GtkWidget *widget,
gpointer data )
{
gtk_statusbar_pop( GTK_STATUSBAR(status_bar), GPOINTER_TO_INT(data) );
return;
}
int main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
@ -48,7 +51,8 @@ int main (int argc, char *argv[])
gtk_box_pack_start (GTK_BOX (vbox), status_bar, TRUE, TRUE, 0);
gtk_widget_show (status_bar);
context_id = gtk_statusbar_get_context_id( GTK_STATUSBAR(status_bar), "Statusbar example");
context_id = gtk_statusbar_get_context_id(
GTK_STATUSBAR(status_bar), "Statusbar example");
button = gtk_button_new_with_label("push item");
gtk_signal_connect(GTK_OBJECT(button), "clicked",

5
examples/table/table.c
View File

@ -11,11 +11,12 @@ void callback( GtkWidget *widget,
}
/* This callback quits the program */
void delete_event( GtkWidget *widget,
gint delete_event( GtkWidget *widget,
GdkEvent *event,
gpointer data )
gpointer data )
{
gtk_main_quit ();
return(FALSE);
}
int main( int argc,

27
examples/text/text.c
View File

@ -19,12 +19,14 @@ void text_toggle_word_wrap (GtkWidget *checkbutton,
GTK_TOGGLE_BUTTON(checkbutton)->active);
}
void close_application( GtkWidget *widget, gpointer data )
void close_application( GtkWidget *widget,
gpointer data )
{
gtk_main_quit();
}
int main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *box1;
@ -37,7 +39,7 @@ int main (int argc, char *argv[])
GtkWidget *vscrollbar;
GtkWidget *text;
GdkColormap *cmap;
GdkColor colour;
GdkColor color;
GdkFont *fixed_font;
FILE *infile;
@ -85,28 +87,29 @@ int main (int argc, char *argv[])
GTK_FILL, GTK_EXPAND | GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (vscrollbar);
/* Get the system colour map and allocate the colour red */
/* Get the system color map and allocate the color red */
cmap = gdk_colormap_get_system();
colour.red = 0xffff;
colour.green = 0;
colour.blue = 0;
if (!gdk_color_alloc(cmap, &colour)) {
g_error("couldn't allocate colour");
color.red = 0xffff;
color.green = 0;
color.blue = 0;
if (!gdk_color_alloc(cmap, &color)) {
g_error("couldn't allocate color");
}
/* Load a fixed font */
fixed_font = gdk_font_load ("-misc-fixed-medium-r-*-*-*-140-*-*-*-*-*-*");
/* Realizing a widget creates a window for it, ready for us to insert some text */
/* Realizing a widget creates a window for it,
* ready for us to insert some text */
gtk_widget_realize (text);
/* Freeze the text widget, ready for multiple updates */
gtk_text_freeze (GTK_TEXT (text));
/* Insert some coloured text */
/* Insert some colored text */
gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL,
"Supports ", -1);
gtk_text_insert (GTK_TEXT (text), NULL, &colour, NULL,
gtk_text_insert (GTK_TEXT (text), NULL, &color, NULL,
"colored ", -1);
gtk_text_insert (GTK_TEXT (text), NULL, &text->style->black, NULL,
"text and different ", -1);

6
examples/tictactoe/tictactoe.c
View File

@ -68,8 +68,10 @@ tictactoe_class_init (TictactoeClass *class)
tictactoe_signals[TICTACTOE_SIGNAL] = gtk_signal_new ("tictactoe",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (TictactoeClass, tictactoe),
gtk_signal_default_marshaller, GTK_TYPE_NONE, 0);
GTK_SIGNAL_OFFSET (TictactoeClass,
tictactoe),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (object_class, tictactoe_signals, LAST_SIGNAL);

8
examples/tictactoe/ttt_test.c
View File

@ -3,15 +3,15 @@
#include <gtk/gtk.h>
#include "tictactoe.h"
void
win (GtkWidget *widget, gpointer data)
void win( GtkWidget *widget,
gpointer data )
{
g_print ("Yay!\n");
tictactoe_clear (TICTACTOE (widget));
}
int
main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *ttt;

15
examples/tree/tree.c
View File

@ -3,12 +3,13 @@
#include <gtk/gtk.h>
/* for all the GtkItem:: and GtkTreeItem:: signals */
static void cb_itemsignal (GtkWidget *item, gchar *signame)
static void cb_itemsignal( GtkWidget *item,
gchar *signame )
{
gchar *name;
GtkLabel *label;
/* It's a GtkBin, so it has one child, which we know to be a
/* It's a Bin, so it has one child, which we know to be a
label, so get that */
label = GTK_LABEL (GTK_BIN (item)->child);
/* Get the text of the label */
@ -19,8 +20,9 @@ static void cb_itemsignal (GtkWidget *item, gchar *signame)
}
/* Note that this is never called */
static void cb_unselect_child (GtkWidget *root_tree, GtkWidget *child,
GtkWidget *subtree)
static void cb_unselect_child( GtkWidget *root_tree,
GtkWidget *child,
GtkWidget *subtree )
{
g_print ("unselect_child called for root tree %p, subtree %p, child %p\n",
root_tree, subtree, child);
@ -35,7 +37,7 @@ static void cb_select_child (GtkWidget *root_tree, GtkWidget *child,
root_tree, subtree, child);
}
static void cb_selection_changed (GtkWidget *tree)
static void cb_selection_changed( GtkWidget *tree )
{
GList *i;
@ -58,7 +60,8 @@ static void cb_selection_changed (GtkWidget *tree)
}
}
int main (int argc, char *argv[])
int main( int argc,
char *argv[] )
{
GtkWidget *window, *scrolled_win, *tree;
static gchar *itemnames[] = {"Foo", "Bar", "Baz", "Quux",

9
examples/wheelbarrow/wheelbarrow.c
View File

@ -120,11 +120,16 @@ static char * WheelbarrowFull_xpm[] = {
/* When invoked (via signal delete_event), terminates the application */
void close_application( GtkWidget *widget, GdkEvent *event, gpointer data ) {
gint close_application( GtkWidget *widget,
GdkEvent *event,
gpointer data )
{
gtk_main_quit();
return(FALSE);
}
int main (int argc, char *argv[])
int main (int argc,
char *argv[] )
{
/* GtkWidget is the storage type for widgets */
GtkWidget *window, *pixmap, *fixed;