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- Complete documentation of Label widget API - New sections for the

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Mon Feb  1 09:16:03 GMT 1999 Tony Gale  <gale@gtk.org>

        * docs/gtk_tut.sgml:
          - Complete documentation of Label widget API
          - New sections for the following:
                * Arrows
                * Alignment
                * Button Boxes
                * Viewports

        * examples/arrow/*, examples/buttonbox/*, examples/label/*
          - New code examples
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GMT 1999 Tony Gale 1999-02-01 10:44:36 +00:00 committed by Tony Gale
parent c39dffed55
commit 5ef056ea94
15 changed files with 1547 additions and 46 deletions
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13
ChangeLog
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@ -1,3 +1,16 @@
Mon Feb 1 09:16:03 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtk_tut.sgml:
- Complete documentation of Label widget API
- New sections for the following:
* Arrows
* Alignment
* Button Boxes
* Viewports
* examples/arrow/*, examples/buttonbox/*, examples/label/*
- New code examples
Fri Jan 29 09:44:37 GMT 1999 Tony Gake <gale@gtk.org>
* examples/fixed/*, examples/frame/*

13
ChangeLog.pre-2-0
View File

@ -1,3 +1,16 @@
Mon Feb 1 09:16:03 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtk_tut.sgml:
- Complete documentation of Label widget API
- New sections for the following:
* Arrows
* Alignment
* Button Boxes
* Viewports
* examples/arrow/*, examples/buttonbox/*, examples/label/*
- New code examples
Fri Jan 29 09:44:37 GMT 1999 Tony Gake <gale@gtk.org>
* examples/fixed/*, examples/frame/*

13
ChangeLog.pre-2-10
View File

@ -1,3 +1,16 @@
Mon Feb 1 09:16:03 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtk_tut.sgml:
- Complete documentation of Label widget API
- New sections for the following:
* Arrows
* Alignment
* Button Boxes
* Viewports
* examples/arrow/*, examples/buttonbox/*, examples/label/*
- New code examples
Fri Jan 29 09:44:37 GMT 1999 Tony Gake <gale@gtk.org>
* examples/fixed/*, examples/frame/*

13
ChangeLog.pre-2-2
View File

@ -1,3 +1,16 @@
Mon Feb 1 09:16:03 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtk_tut.sgml:
- Complete documentation of Label widget API
- New sections for the following:
* Arrows
* Alignment
* Button Boxes
* Viewports
* examples/arrow/*, examples/buttonbox/*, examples/label/*
- New code examples
Fri Jan 29 09:44:37 GMT 1999 Tony Gake <gale@gtk.org>
* examples/fixed/*, examples/frame/*

13
ChangeLog.pre-2-4
View File

@ -1,3 +1,16 @@
Mon Feb 1 09:16:03 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtk_tut.sgml:
- Complete documentation of Label widget API
- New sections for the following:
* Arrows
* Alignment
* Button Boxes
* Viewports
* examples/arrow/*, examples/buttonbox/*, examples/label/*
- New code examples
Fri Jan 29 09:44:37 GMT 1999 Tony Gake <gale@gtk.org>
* examples/fixed/*, examples/frame/*

13
ChangeLog.pre-2-6
View File

@ -1,3 +1,16 @@
Mon Feb 1 09:16:03 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtk_tut.sgml:
- Complete documentation of Label widget API
- New sections for the following:
* Arrows
* Alignment
* Button Boxes
* Viewports
* examples/arrow/*, examples/buttonbox/*, examples/label/*
- New code examples
Fri Jan 29 09:44:37 GMT 1999 Tony Gake <gale@gtk.org>
* examples/fixed/*, examples/frame/*

13
ChangeLog.pre-2-8
View File

@ -1,3 +1,16 @@
Mon Feb 1 09:16:03 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtk_tut.sgml:
- Complete documentation of Label widget API
- New sections for the following:
* Arrows
* Alignment
* Button Boxes
* Viewports
* examples/arrow/*, examples/buttonbox/*, examples/label/*
- New code examples
Fri Jan 29 09:44:37 GMT 1999 Tony Gake <gale@gtk.org>
* examples/fixed/*, examples/frame/*

590
docs/gtk_tut.sgml
View File

@ -11,7 +11,7 @@ Tony Gale <tt><htmlurl url="mailto:gale@gtk.org"
name="&lt;gale@gtk.org&gt;"></tt>
Ian Main <tt><htmlurl url="mailto:imain@gtk.org"
name="&lt;imain@gtk.org&gt;"></tt>,
<date>January 28th, 1999
<date>January 31th, 1999
<!-- ***************************************************************** -->
<sect>Introduction
@ -3013,7 +3013,8 @@ Where the first argument is the label you created previously (cast
using the GTK_LABEL() macro), and the second is the new string.
The space needed for the new string will be automatically adjusted if
needed.
needed. You can produce multi-line labels by putting line breaks in
the label string.
To retrieve the current string, use:
@ -3023,7 +3024,276 @@ void gtk_label_get( GtkLabel *label,
</verb></tscreen>
Where the first argument is the label you've created, and the second,
the return for the string.
the return for the string. Do not free the return string, as it is
used internally by GTK.
The label text can be justified using:
<tscreen><verb>
void gtk_label_set_justify( GtkLabel *label,
GtkJustification jtype );
</verb></tscreen>
Values for <tt/jtype/ are:
<itemize>
<item> GTK_JUSTIFY_LEFT
<item> GTK_JUSTIFY_RIGHT
<item> GTK_JUSTIFY_CENTER (the default)
<item> GTK_JUSTIFY_FILL
</itemize>
The label widget is also capable of line wrapping the text
automatically. This can be activated using:
<tscreen><verb>
void gtk_label_set_line_wrap (GtkLabel *label,
gboolean wrap);
</verb></tscreen>
The <//wrap/ argument takes a TRUE or FALSE value.
If you want your label underlined, then you can set a pattern on the
label:
<tscreen><verb>
void gtk_label_set_pattern (GtkLabel *label,
const gchar *pattern);
</verb></tscreen>
The pattern argument indicates how the underlining should look. It
consists of a string of underscore and space characters. An underscore
indicates that the corresponding character in the label should be
underlined. For example, the string <verb/"__ __"/ would underline the
first two characters and eigth and ninth characters.
Below is a short example to illustrate these functions. This example
makes use of the Frame widget to better demonstrate the label
styles. You can ignore this for now as the <ref id="sec_Frames"
name="Frame"> widget is explained later on.
<tscreen><verb>
/* example-start label label.c */
#include <gtk/gtk.h>
int main( int argc,
char *argv[] )
{
static GtkWidget *window = NULL;
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *frame;
GtkWidget *label;
/* Initialise GTK */
gtk_init(&amp;argc, &amp;argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC(gtk_main_quit),
NULL);
gtk_window_set_title (GTK_WINDOW (window), "Label");
vbox = gtk_vbox_new (FALSE, 5);
hbox = gtk_hbox_new (FALSE, 5);
gtk_container_add (GTK_CONTAINER (window), hbox);
gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (window), 5);
frame = gtk_frame_new ("Normal Label");
label = gtk_label_new ("This is a Normal label");
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Multi-line Label");
label = gtk_label_new ("This is a Multi-line label.\nSecond line\n" \
"Third line");
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Left Justified Label");
label = gtk_label_new ("This is a Left-Justified\n" \
"Multi-line label.\nThird line");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Right Justified Label");
label = gtk_label_new ("This is a Right-Justified\nMulti-line label.\n" \
"Fourth line, (j/k)");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_RIGHT);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
vbox = gtk_vbox_new (FALSE, 5);
gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
frame = gtk_frame_new ("Line wrapped label");
label = gtk_label_new ("This is an example of a line-wrapped label. It " \
"should not be taking up the entire " /* big space to test spacing */\
"width allocated to it, but automatically " \
"wraps the words to fit. " \
"The time has come, for all good men, to come to " \
"the aid of their party. " \
"The sixth sheik's six sheep's sick.\n" \
" It supports multiple paragraphs correctly, " \
"and correctly adds "\
"many extra spaces. ");
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Filled, wrapped label");
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 "\
"my point. Here is another sentence. "\
"Here comes the sun, do de do de do.\n"\
" This is a new paragraph.\n"\
" This is another newer, longer, better " \
"paragraph. It is coming to an end, "\
"unfortunately.");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_FILL);
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Underlined label");
label = gtk_label_new ("This label is underlined!\n"
"This one is underlined in quite a funky fashion");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_label_set_pattern (GTK_LABEL (label),
"_________________________ _ _________ _ ______ __ _______ ___");
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show_all (window);
gtk_main ();
return(0);
}
/* example-end */
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1> Arrows
<p>
The Arrow widget draws an arrowhead, facing in a number of possible
directions and having a number of possible styles. It can be very
useful when placed on a button in many applications.
There are only two functions for manipulating an Arrow widget:
<tscreen><verb>
GtkWidget *gtk_arrow_new( GtkArrowType arrow_type,
GtkShadowType shadow_type );
void gtk_arrow_set( GtkArrow *arrow,
GtkArrowType arrow_type,
GtkShadowType shadow_type );
</verb></tscreen>
The first creates a new arrow widget with the indicated type and
appearance. The second allows these values to be altered
retrospectively. The <tt/arrow_type/ argument may take one of the
following values:
<itemize>
<item> GTK_ARROW_UP
<item> GTK_ARROW_DOWN
<item> GTK_ARROW_LEFT
<item> GTK_ARROW_RIGHT
</itemize>
These values obviously indicate the direction in which the arrow will
point. The <tt/shadow_type/ argument may take one of these values:
<itemize>
<item> GTK_SHADOW_IN
<item> GTK_SHADOW_OUT (the default)
<item> GTK_SHADOW_ETCHED_IN
<item> GTK_SHADOW_ETCHED_OUT
</itemize>
Here's a brief example to illustrate their use.
<tscreen><verb>
/* example-start arrow arrow.c */
#include <gtk/gtk.h>
/* Create an Arrow widget with the specified parameters
* and pack it into a button */
GtkWidget *create_arrow_button( GtkArrowType arrow_type,
GtkShadowType shadow_type )
{
GtkWidget *button;
GtkWidget *arrow;
button = gtk_button_new();
arrow = gtk_arrow_new (arrow_type, shadow_type);
gtk_container_add (GTK_CONTAINER (button), arrow);
gtk_widget_show(button);
gtk_widget_show(arrow);
return(button);
}
int main( int argc,
char *argv[] )
{
/* GtkWidget is the storage type for widgets */
GtkWidget *window;
GtkWidget *button;
GtkWidget *box;
/* Initialize the toolkit */
gtk_init (&amp;argc, &amp;argv);
/* Create a new window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Arrow Buttons");
/* It's a good idea to do this for all windows. */
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit), NULL);
/* Sets the border width of the window. */
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
/* Create a box to hold the arrows/buttons */
box = gtk_hbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (box), 2);
gtk_container_add (GTK_CONTAINER (window), box);
/* Pack and show all our widgets */
gtk_widget_show(box);
button = create_arrow_button(GTK_ARROW_UP, GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
button = create_arrow_button(GTK_ARROW_DOWN, GTK_SHADOW_OUT);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
button = create_arrow_button(GTK_ARROW_LEFT, GTK_SHADOW_ETCHED_IN);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
button = create_arrow_button(GTK_ARROW_RIGHT, GTK_SHADOW_ETCHED_OUT);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
gtk_widget_show (window);
/* Rest in gtk_main and wait for the fun to begin! */
gtk_main ();
return(0);
}
/* example-end */
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1>The Tooltips Widget
@ -3116,7 +3386,7 @@ And that's all the functions associated with tooltips. More than
you'll ever want to know :-)
<!-- ----------------------------------------------------------------- -->
<sect1> Progress Bars
<sect1> Progress Bars <label id="sec_ProgressBar">
<p>
Progress bars are used to show the status of an operation. They are
pretty easy to use, as you will see with the code below. But first
@ -4811,7 +5081,7 @@ GtkWidget *gtk_event_box_new( void );
A child widget can then be added to this EventBox:
<tscreen><verb>
gtk_container_add( GTK_CONTAINER(event_box), widget );
gtk_container_add( GTK_CONTAINER(event_box), child_widget );
</verb></tscreen>
The following example demonstrates both uses of an EventBox - a label
@ -4876,6 +5146,48 @@ main (int argc, char *argv[])
/* example-end */
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1>The Alignment widget <label id="sec_Alignment">
<p>
The alignment widget allows you to place a widget within its window at
a position and size relative to the size of the Alignment widget
itself. For example, it can be very useful for centering a widget
within the window.
There are only two functions associated with the Alignment widget:
<tscreen><verb>
GtkWidget* gtk_alignment_new( gfloat xalign,
gfloat yalign,
gfloat xscale,
gfloat yscale );
void gtk_alignment_set( GtkAlignment *alignment,
gfloat xalign,
gfloat yalign,
gfloat xscale,
gfloat yscale );
</verb></tscreen>
The first function creates a new Alignment widget with the specified
parameters. The second function allows the alignment paramters of an
exisiting Alignment widget to be altered.
All four alignment parameters are floating point numbers which can
range from 0.0 to 1.0. The <tt/xalign/ and <tt/yalign/ arguments
affect the position of the widget placed within the Alignment
widget. The <tt/xscale/ and <tt/yscale/ arguments effect the amount of
space allocated to the widget.
A child widget can be added to this Alignment widget using:
<tscreen><verb>
gtk_container_add( GTK_CONTAINER(alignment), child_widget );
</verb></tscreen>
For an example of using an Alignment widget, refer to the example for
the <ref id="sec_ProgressBar" name="Progress Bar"> widget.
<!-- ----------------------------------------------------------------- -->
<sect1> Fixed Container
<p>
@ -4988,7 +5300,7 @@ int main( int argc,
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1> Frames
<sect1> Frames <label id="sec_Frames">
<p>
Frames can be used to enclose one or a group of widgets with a box
which can optionally be labelled. The position of the label and the
@ -5390,7 +5702,62 @@ main (int argc, char *argv[])
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1>Scrolled Windows
<sect1>Viewports <label id="sec_Viewports">
<p>
It is unlikely that you will ever need to use the Viewport widget
directly. You are much more likely to use the
<ref id="sec_ScrolledWindows" name="Scrolled Windows"> widget which
itself uses the Viewport.
A viewport widget allows you to place a larger widget within it such
that you can view a part of it at a time. It uses
<ref id="sec_Adjustment" name="Adjustments"> to define the area that
is currently in view.
A Viewport is created with the function
<tscreen><verb>
GtkWidget *gtk_viewport_new( GtkAdjustment *hadjustment,
GtkAdjustment *vadjustment );
</verb></tscreen>
As you can see you can specify the horizontal and vertical Adjustments
that the widget is to use when you create the widget. It will create
it's own if you pass NULL as the value of the arguments.
You can get and set the adjustments after the widget has been created
using the following four functions:
<tscreen><verb>
GtkAdjustment *gtk_viewport_get_hadjustment (GtkViewport *viewport );
GtkAdjustment *gtk_viewport_get_vadjustment (GtkViewport *viewport );
void gtk_viewport_set_hadjustment( GtkViewport *viewport,
GtkAdjustment *adjustment );
void gtk_viewport_set_vadjustment( GtkViewport *viewport,
GtkAdjustment *adjustment );
</verb></tscreen>
The only other viewport function is used to alter its appearance:
<tscreen><verb>
void gtk_viewport_set_shadow_type( GtkViewport *viewport,
GtkShadowType type );
</verb></tscreen>
Possible values for the <tt/type/ parameter are:
<itemize>
<item> GTK_SHADOW_NONE,
<item> GTK_SHADOW_IN,
<item> GTK_SHADOW_OUT,
<item> GTK_SHADOW_ETCHED_IN,
<item> GTK_SHADOW_ETCHED_OUT
</itemize>
<!-- ----------------------------------------------------------------- -->
<sect1>Scrolled Windows <label id="sec_ScrolledWindows">
<p>
Scrolled windows are used to create a scrollable area inside a real
window. You may insert any type of widget into a scrolled window, and
@ -5535,6 +5902,198 @@ Try playing with resizing the window. You'll notice how the scrollbars
react. You may also wish to use the gtk_widget_set_usize() call to set
the default size of the window or other widgets.
<!-- ----------------------------------------------------------------- -->
<sect1>Button Boxes
<p>
Button Boxes are a convenient way to quickly layout a group of
buttons. They come in both horizontal and vertical flavours. You
create a new Button Box with one of the following calls, which create
a horizontal or vertical box, respectively:
<tscreen><verb>
GtkWidget *gtk_hbutton_box_new( void );
GtkWidget *gtk_vbutton_box_new( void );
</verb></tscreen>
The only attributes pertaining to button boxes effect how the buttons
are layed out. You can change the spacing between the buttons with:
<tscreen><verb>
void gtk_hbutton_box_set_spacing_default( gint spacing );
void gtk_vbutton_box_set_spacing_default( gint spacing );
</verb></tscreen>
Similarly, the current spacing values can be queried using:
<tscreen><verb>
gint gtk_hbutton_box_get_spacing_default( void );
gint gtk_vbutton_box_get_spacing_default( void );
</verb></tscreen>
The second attribute that we can access effects the layour of the
buttons within the box. It is set using one of:
<tscreen><verb>
void gtk_hbutton_box_set_layout_default( GtkButtonBoxStyle layout );
void gtk_vbutton_box_set_layout_default( GtkButtonBoxStyle layout );
</verb></tscreen>
The <tt/layout/ argument can take one of the following values:
<itemize>
<item> GTK_BUTTONBOX_DEFAULT_STYLE
<item> GTK_BUTTONBOX_SPREAD
<item> GTK_BUTTONBOX_EDGE
<item> GTK_BUTTONBOX_START
<item> GTK_BUTTONBOX_END
</itemize>
The current layout setting can be retrieved using:
<tscreen><verb>
GtkButtonBoxStyle gtk_hbutton_box_get_layout_default( void );
GtkButtonBoxStyle gtk_vbutton_box_get_layout_default( void );
</verb></tscreen>
Buttons are added to a Button Box using the usual function:
<tscreen><verb>
gtk_container_add( GTK_CONTAINER(button_box), child_widget );
</verb></tscreen>
Here's an example that illustrates all the different layout settings
for Button Boxes.
<tscreen><verb>
/* example-start buttonbox buttonbox.c */
#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 *frame;
GtkWidget *bbox;
GtkWidget *button;
frame = gtk_frame_new (title);
if (horizontal)
bbox = gtk_hbutton_box_new ();
else
bbox = gtk_vbutton_box_new ();
gtk_container_set_border_width (GTK_CONTAINER (bbox), 5);
gtk_container_add (GTK_CONTAINER (frame), bbox);
/* Set the appearance of the Button Box */
gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), layout);
gtk_button_box_set_spacing (GTK_BUTTON_BOX (bbox), spacing);
gtk_button_box_set_child_size (GTK_BUTTON_BOX (bbox), child_w, child_h);
button = gtk_button_new_with_label ("OK");
gtk_container_add (GTK_CONTAINER (bbox), button);
button = gtk_button_new_with_label ("Cancel");
gtk_container_add (GTK_CONTAINER (bbox), button);
button = gtk_button_new_with_label ("Help");
gtk_container_add (GTK_CONTAINER (bbox), button);
return(frame);
}
int main( int argc,
char *argv[] )
{
static GtkWidget* window = NULL;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *frame_horz;
GtkWidget *frame_vert;
/* Initialize GTK */
gtk_init( &amp;argc, &amp;argv );
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Button Boxes");
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC(gtk_main_quit),
NULL);
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
main_vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), main_vbox);
frame_horz = gtk_frame_new ("Horizontal Button Boxes");
gtk_box_pack_start (GTK_BOX (main_vbox), frame_horz, TRUE, TRUE, 10);
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 10);
gtk_container_add (GTK_CONTAINER (frame_horz), vbox);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "Spread (spacing 40)", 40, 85, 20, GTK_BUTTONBOX_SPREAD),
TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "Edge (spacing 30)", 30, 85, 20, GTK_BUTTONBOX_EDGE),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "Start (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_START),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "End (spacing 10)", 10, 85, 20, GTK_BUTTONBOX_END),
TRUE, TRUE, 5);
frame_vert = gtk_frame_new ("Vertical Button Boxes");
gtk_box_pack_start (GTK_BOX (main_vbox), frame_vert, TRUE, TRUE, 10);
hbox = gtk_hbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 10);
gtk_container_add (GTK_CONTAINER (frame_vert), hbox);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "Spread (spacing 5)", 5, 85, 20, GTK_BUTTONBOX_SPREAD),
TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "Edge (spacing 30)", 30, 85, 20, GTK_BUTTONBOX_EDGE),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "Start (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_START),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "End (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_END),
TRUE, TRUE, 5);
gtk_widget_show_all (window);
/* Enter the event loop */
gtk_main ();
return(0);
}
/* example-end */
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1>Toolbar
<p>
@ -7003,7 +7562,7 @@ void selection_made( GtkWidget *clist, gint row, gint column,
</verb></tscreen>
<!-- ***************************************************************** -->
<sect> Tree Widget<label id="sec_Tree_Widgets">
<sect> Tree Widget <label id="sec_Tree_Widgets">
<!-- ***************************************************************** -->
<p>
The purpose of tree widgets is to display hierarchically-organized
@ -8720,15 +9279,6 @@ When you do come to understand all the functions of a new undocumented
widget, please consider writing a tutorial on it so others may benefit
from your time.
<!-- ----------------------------------------------------------------- -->
<sect1> Alignment
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Arrows
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Button Box(es)
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Calendar
<p>
@ -8742,9 +9292,6 @@ from your time.
<sect1> Curves
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Dialog boxes
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Drawing Area
<p>
<!-- ----------------------------------------------------------------- -->
@ -8771,9 +9318,6 @@ from your time.
<!-- ----------------------------------------------------------------- -->
<sect1> Spin Button
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Viewport
<p>
<!--

590
docs/tutorial/gtk_tut.sgml
View File

@ -11,7 +11,7 @@ Tony Gale <tt><htmlurl url="mailto:gale@gtk.org"
name="&lt;gale@gtk.org&gt;"></tt>
Ian Main <tt><htmlurl url="mailto:imain@gtk.org"
name="&lt;imain@gtk.org&gt;"></tt>,
<date>January 28th, 1999
<date>January 31th, 1999
<!-- ***************************************************************** -->
<sect>Introduction
@ -3013,7 +3013,8 @@ Where the first argument is the label you created previously (cast
using the GTK_LABEL() macro), and the second is the new string.
The space needed for the new string will be automatically adjusted if
needed.
needed. You can produce multi-line labels by putting line breaks in
the label string.
To retrieve the current string, use:
@ -3023,7 +3024,276 @@ void gtk_label_get( GtkLabel *label,
</verb></tscreen>
Where the first argument is the label you've created, and the second,
the return for the string.
the return for the string. Do not free the return string, as it is
used internally by GTK.
The label text can be justified using:
<tscreen><verb>
void gtk_label_set_justify( GtkLabel *label,
GtkJustification jtype );
</verb></tscreen>
Values for <tt/jtype/ are:
<itemize>
<item> GTK_JUSTIFY_LEFT
<item> GTK_JUSTIFY_RIGHT
<item> GTK_JUSTIFY_CENTER (the default)
<item> GTK_JUSTIFY_FILL
</itemize>
The label widget is also capable of line wrapping the text
automatically. This can be activated using:
<tscreen><verb>
void gtk_label_set_line_wrap (GtkLabel *label,
gboolean wrap);
</verb></tscreen>
The <//wrap/ argument takes a TRUE or FALSE value.
If you want your label underlined, then you can set a pattern on the
label:
<tscreen><verb>
void gtk_label_set_pattern (GtkLabel *label,
const gchar *pattern);
</verb></tscreen>
The pattern argument indicates how the underlining should look. It
consists of a string of underscore and space characters. An underscore
indicates that the corresponding character in the label should be
underlined. For example, the string <verb/"__ __"/ would underline the
first two characters and eigth and ninth characters.
Below is a short example to illustrate these functions. This example
makes use of the Frame widget to better demonstrate the label
styles. You can ignore this for now as the <ref id="sec_Frames"
name="Frame"> widget is explained later on.
<tscreen><verb>
/* example-start label label.c */
#include <gtk/gtk.h>
int main( int argc,
char *argv[] )
{
static GtkWidget *window = NULL;
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *frame;
GtkWidget *label;
/* Initialise GTK */
gtk_init(&amp;argc, &amp;argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC(gtk_main_quit),
NULL);
gtk_window_set_title (GTK_WINDOW (window), "Label");
vbox = gtk_vbox_new (FALSE, 5);
hbox = gtk_hbox_new (FALSE, 5);
gtk_container_add (GTK_CONTAINER (window), hbox);
gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (window), 5);
frame = gtk_frame_new ("Normal Label");
label = gtk_label_new ("This is a Normal label");
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Multi-line Label");
label = gtk_label_new ("This is a Multi-line label.\nSecond line\n" \
"Third line");
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Left Justified Label");
label = gtk_label_new ("This is a Left-Justified\n" \
"Multi-line label.\nThird line");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Right Justified Label");
label = gtk_label_new ("This is a Right-Justified\nMulti-line label.\n" \
"Fourth line, (j/k)");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_RIGHT);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
vbox = gtk_vbox_new (FALSE, 5);
gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
frame = gtk_frame_new ("Line wrapped label");
label = gtk_label_new ("This is an example of a line-wrapped label. It " \
"should not be taking up the entire " /* big space to test spacing */\
"width allocated to it, but automatically " \
"wraps the words to fit. " \
"The time has come, for all good men, to come to " \
"the aid of their party. " \
"The sixth sheik's six sheep's sick.\n" \
" It supports multiple paragraphs correctly, " \
"and correctly adds "\
"many extra spaces. ");
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Filled, wrapped label");
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 "\
"my point. Here is another sentence. "\
"Here comes the sun, do de do de do.\n"\
" This is a new paragraph.\n"\
" This is another newer, longer, better " \
"paragraph. It is coming to an end, "\
"unfortunately.");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_FILL);
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Underlined label");
label = gtk_label_new ("This label is underlined!\n"
"This one is underlined in quite a funky fashion");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_label_set_pattern (GTK_LABEL (label),
"_________________________ _ _________ _ ______ __ _______ ___");
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show_all (window);
gtk_main ();
return(0);
}
/* example-end */
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1> Arrows
<p>
The Arrow widget draws an arrowhead, facing in a number of possible
directions and having a number of possible styles. It can be very
useful when placed on a button in many applications.
There are only two functions for manipulating an Arrow widget:
<tscreen><verb>
GtkWidget *gtk_arrow_new( GtkArrowType arrow_type,
GtkShadowType shadow_type );
void gtk_arrow_set( GtkArrow *arrow,
GtkArrowType arrow_type,
GtkShadowType shadow_type );
</verb></tscreen>
The first creates a new arrow widget with the indicated type and
appearance. The second allows these values to be altered
retrospectively. The <tt/arrow_type/ argument may take one of the
following values:
<itemize>
<item> GTK_ARROW_UP
<item> GTK_ARROW_DOWN
<item> GTK_ARROW_LEFT
<item> GTK_ARROW_RIGHT
</itemize>
These values obviously indicate the direction in which the arrow will
point. The <tt/shadow_type/ argument may take one of these values:
<itemize>
<item> GTK_SHADOW_IN
<item> GTK_SHADOW_OUT (the default)
<item> GTK_SHADOW_ETCHED_IN
<item> GTK_SHADOW_ETCHED_OUT
</itemize>
Here's a brief example to illustrate their use.
<tscreen><verb>
/* example-start arrow arrow.c */
#include <gtk/gtk.h>
/* Create an Arrow widget with the specified parameters
* and pack it into a button */
GtkWidget *create_arrow_button( GtkArrowType arrow_type,
GtkShadowType shadow_type )
{
GtkWidget *button;
GtkWidget *arrow;
button = gtk_button_new();
arrow = gtk_arrow_new (arrow_type, shadow_type);
gtk_container_add (GTK_CONTAINER (button), arrow);
gtk_widget_show(button);
gtk_widget_show(arrow);
return(button);
}
int main( int argc,
char *argv[] )
{
/* GtkWidget is the storage type for widgets */
GtkWidget *window;
GtkWidget *button;
GtkWidget *box;
/* Initialize the toolkit */
gtk_init (&amp;argc, &amp;argv);
/* Create a new window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Arrow Buttons");
/* It's a good idea to do this for all windows. */
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit), NULL);
/* Sets the border width of the window. */
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
/* Create a box to hold the arrows/buttons */
box = gtk_hbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (box), 2);
gtk_container_add (GTK_CONTAINER (window), box);
/* Pack and show all our widgets */
gtk_widget_show(box);
button = create_arrow_button(GTK_ARROW_UP, GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
button = create_arrow_button(GTK_ARROW_DOWN, GTK_SHADOW_OUT);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
button = create_arrow_button(GTK_ARROW_LEFT, GTK_SHADOW_ETCHED_IN);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
button = create_arrow_button(GTK_ARROW_RIGHT, GTK_SHADOW_ETCHED_OUT);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
gtk_widget_show (window);
/* Rest in gtk_main and wait for the fun to begin! */
gtk_main ();
return(0);
}
/* example-end */
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1>The Tooltips Widget
@ -3116,7 +3386,7 @@ And that's all the functions associated with tooltips. More than
you'll ever want to know :-)
<!-- ----------------------------------------------------------------- -->
<sect1> Progress Bars
<sect1> Progress Bars <label id="sec_ProgressBar">
<p>
Progress bars are used to show the status of an operation. They are
pretty easy to use, as you will see with the code below. But first
@ -4811,7 +5081,7 @@ GtkWidget *gtk_event_box_new( void );
A child widget can then be added to this EventBox:
<tscreen><verb>
gtk_container_add( GTK_CONTAINER(event_box), widget );
gtk_container_add( GTK_CONTAINER(event_box), child_widget );
</verb></tscreen>
The following example demonstrates both uses of an EventBox - a label
@ -4876,6 +5146,48 @@ main (int argc, char *argv[])
/* example-end */
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1>The Alignment widget <label id="sec_Alignment">
<p>
The alignment widget allows you to place a widget within its window at
a position and size relative to the size of the Alignment widget
itself. For example, it can be very useful for centering a widget
within the window.
There are only two functions associated with the Alignment widget:
<tscreen><verb>
GtkWidget* gtk_alignment_new( gfloat xalign,
gfloat yalign,
gfloat xscale,
gfloat yscale );
void gtk_alignment_set( GtkAlignment *alignment,
gfloat xalign,
gfloat yalign,
gfloat xscale,
gfloat yscale );
</verb></tscreen>
The first function creates a new Alignment widget with the specified
parameters. The second function allows the alignment paramters of an
exisiting Alignment widget to be altered.
All four alignment parameters are floating point numbers which can
range from 0.0 to 1.0. The <tt/xalign/ and <tt/yalign/ arguments
affect the position of the widget placed within the Alignment
widget. The <tt/xscale/ and <tt/yscale/ arguments effect the amount of
space allocated to the widget.
A child widget can be added to this Alignment widget using:
<tscreen><verb>
gtk_container_add( GTK_CONTAINER(alignment), child_widget );
</verb></tscreen>
For an example of using an Alignment widget, refer to the example for
the <ref id="sec_ProgressBar" name="Progress Bar"> widget.
<!-- ----------------------------------------------------------------- -->
<sect1> Fixed Container
<p>
@ -4988,7 +5300,7 @@ int main( int argc,
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1> Frames
<sect1> Frames <label id="sec_Frames">
<p>
Frames can be used to enclose one or a group of widgets with a box
which can optionally be labelled. The position of the label and the
@ -5390,7 +5702,62 @@ main (int argc, char *argv[])
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1>Scrolled Windows
<sect1>Viewports <label id="sec_Viewports">
<p>
It is unlikely that you will ever need to use the Viewport widget
directly. You are much more likely to use the
<ref id="sec_ScrolledWindows" name="Scrolled Windows"> widget which
itself uses the Viewport.
A viewport widget allows you to place a larger widget within it such
that you can view a part of it at a time. It uses
<ref id="sec_Adjustment" name="Adjustments"> to define the area that
is currently in view.
A Viewport is created with the function
<tscreen><verb>
GtkWidget *gtk_viewport_new( GtkAdjustment *hadjustment,
GtkAdjustment *vadjustment );
</verb></tscreen>
As you can see you can specify the horizontal and vertical Adjustments
that the widget is to use when you create the widget. It will create
it's own if you pass NULL as the value of the arguments.
You can get and set the adjustments after the widget has been created
using the following four functions:
<tscreen><verb>
GtkAdjustment *gtk_viewport_get_hadjustment (GtkViewport *viewport );
GtkAdjustment *gtk_viewport_get_vadjustment (GtkViewport *viewport );
void gtk_viewport_set_hadjustment( GtkViewport *viewport,
GtkAdjustment *adjustment );
void gtk_viewport_set_vadjustment( GtkViewport *viewport,
GtkAdjustment *adjustment );
</verb></tscreen>
The only other viewport function is used to alter its appearance:
<tscreen><verb>
void gtk_viewport_set_shadow_type( GtkViewport *viewport,
GtkShadowType type );
</verb></tscreen>
Possible values for the <tt/type/ parameter are:
<itemize>
<item> GTK_SHADOW_NONE,
<item> GTK_SHADOW_IN,
<item> GTK_SHADOW_OUT,
<item> GTK_SHADOW_ETCHED_IN,
<item> GTK_SHADOW_ETCHED_OUT
</itemize>
<!-- ----------------------------------------------------------------- -->
<sect1>Scrolled Windows <label id="sec_ScrolledWindows">
<p>
Scrolled windows are used to create a scrollable area inside a real
window. You may insert any type of widget into a scrolled window, and
@ -5535,6 +5902,198 @@ Try playing with resizing the window. You'll notice how the scrollbars
react. You may also wish to use the gtk_widget_set_usize() call to set
the default size of the window or other widgets.
<!-- ----------------------------------------------------------------- -->
<sect1>Button Boxes
<p>
Button Boxes are a convenient way to quickly layout a group of
buttons. They come in both horizontal and vertical flavours. You
create a new Button Box with one of the following calls, which create
a horizontal or vertical box, respectively:
<tscreen><verb>
GtkWidget *gtk_hbutton_box_new( void );
GtkWidget *gtk_vbutton_box_new( void );
</verb></tscreen>
The only attributes pertaining to button boxes effect how the buttons
are layed out. You can change the spacing between the buttons with:
<tscreen><verb>
void gtk_hbutton_box_set_spacing_default( gint spacing );
void gtk_vbutton_box_set_spacing_default( gint spacing );
</verb></tscreen>
Similarly, the current spacing values can be queried using:
<tscreen><verb>
gint gtk_hbutton_box_get_spacing_default( void );
gint gtk_vbutton_box_get_spacing_default( void );
</verb></tscreen>
The second attribute that we can access effects the layour of the
buttons within the box. It is set using one of:
<tscreen><verb>
void gtk_hbutton_box_set_layout_default( GtkButtonBoxStyle layout );
void gtk_vbutton_box_set_layout_default( GtkButtonBoxStyle layout );
</verb></tscreen>
The <tt/layout/ argument can take one of the following values:
<itemize>
<item> GTK_BUTTONBOX_DEFAULT_STYLE
<item> GTK_BUTTONBOX_SPREAD
<item> GTK_BUTTONBOX_EDGE
<item> GTK_BUTTONBOX_START
<item> GTK_BUTTONBOX_END
</itemize>
The current layout setting can be retrieved using:
<tscreen><verb>
GtkButtonBoxStyle gtk_hbutton_box_get_layout_default( void );
GtkButtonBoxStyle gtk_vbutton_box_get_layout_default( void );
</verb></tscreen>
Buttons are added to a Button Box using the usual function:
<tscreen><verb>
gtk_container_add( GTK_CONTAINER(button_box), child_widget );
</verb></tscreen>
Here's an example that illustrates all the different layout settings
for Button Boxes.
<tscreen><verb>
/* example-start buttonbox buttonbox.c */
#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 *frame;
GtkWidget *bbox;
GtkWidget *button;
frame = gtk_frame_new (title);
if (horizontal)
bbox = gtk_hbutton_box_new ();
else
bbox = gtk_vbutton_box_new ();
gtk_container_set_border_width (GTK_CONTAINER (bbox), 5);
gtk_container_add (GTK_CONTAINER (frame), bbox);
/* Set the appearance of the Button Box */
gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), layout);
gtk_button_box_set_spacing (GTK_BUTTON_BOX (bbox), spacing);
gtk_button_box_set_child_size (GTK_BUTTON_BOX (bbox), child_w, child_h);
button = gtk_button_new_with_label ("OK");
gtk_container_add (GTK_CONTAINER (bbox), button);
button = gtk_button_new_with_label ("Cancel");
gtk_container_add (GTK_CONTAINER (bbox), button);
button = gtk_button_new_with_label ("Help");
gtk_container_add (GTK_CONTAINER (bbox), button);
return(frame);
}
int main( int argc,
char *argv[] )
{
static GtkWidget* window = NULL;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *frame_horz;
GtkWidget *frame_vert;
/* Initialize GTK */
gtk_init( &amp;argc, &amp;argv );
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Button Boxes");
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC(gtk_main_quit),
NULL);
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
main_vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), main_vbox);
frame_horz = gtk_frame_new ("Horizontal Button Boxes");
gtk_box_pack_start (GTK_BOX (main_vbox), frame_horz, TRUE, TRUE, 10);
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 10);
gtk_container_add (GTK_CONTAINER (frame_horz), vbox);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "Spread (spacing 40)", 40, 85, 20, GTK_BUTTONBOX_SPREAD),
TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "Edge (spacing 30)", 30, 85, 20, GTK_BUTTONBOX_EDGE),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "Start (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_START),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "End (spacing 10)", 10, 85, 20, GTK_BUTTONBOX_END),
TRUE, TRUE, 5);
frame_vert = gtk_frame_new ("Vertical Button Boxes");
gtk_box_pack_start (GTK_BOX (main_vbox), frame_vert, TRUE, TRUE, 10);
hbox = gtk_hbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 10);
gtk_container_add (GTK_CONTAINER (frame_vert), hbox);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "Spread (spacing 5)", 5, 85, 20, GTK_BUTTONBOX_SPREAD),
TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "Edge (spacing 30)", 30, 85, 20, GTK_BUTTONBOX_EDGE),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "Start (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_START),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "End (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_END),
TRUE, TRUE, 5);
gtk_widget_show_all (window);
/* Enter the event loop */
gtk_main ();
return(0);
}
/* example-end */
</verb></tscreen>
<!-- ----------------------------------------------------------------- -->
<sect1>Toolbar
<p>
@ -7003,7 +7562,7 @@ void selection_made( GtkWidget *clist, gint row, gint column,
</verb></tscreen>
<!-- ***************************************************************** -->
<sect> Tree Widget<label id="sec_Tree_Widgets">
<sect> Tree Widget <label id="sec_Tree_Widgets">
<!-- ***************************************************************** -->
<p>
The purpose of tree widgets is to display hierarchically-organized
@ -8720,15 +9279,6 @@ When you do come to understand all the functions of a new undocumented
widget, please consider writing a tutorial on it so others may benefit
from your time.
<!-- ----------------------------------------------------------------- -->
<sect1> Alignment
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Arrows
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Button Box(es)
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Calendar
<p>
@ -8742,9 +9292,6 @@ from your time.
<sect1> Curves
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Dialog boxes
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Drawing Area
<p>
<!-- ----------------------------------------------------------------- -->
@ -8771,9 +9318,6 @@ from your time.
<!-- ----------------------------------------------------------------- -->
<sect1> Spin Button
<p>
<!-- ----------------------------------------------------------------- -->
<sect1> Viewport
<p>
<!--

8
examples/arrow/Makefile Normal file
View File

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

74
examples/arrow/arrow.c Normal file
View File

@ -0,0 +1,74 @@
/* example-start arrow arrow.c */
#include <gtk/gtk.h>
/* Create an Arrow widget with the specified parameters
* and pack it into a button */
GtkWidget *create_arrow_button( GtkArrowType arrow_type,
GtkShadowType shadow_type )
{
GtkWidget *button;
GtkWidget *arrow;
button = gtk_button_new();
arrow = gtk_arrow_new (arrow_type, shadow_type);
gtk_container_add (GTK_CONTAINER (button), arrow);
gtk_widget_show(button);
gtk_widget_show(arrow);
return(button);
}
int main( int argc,
char *argv[] )
{
/* GtkWidget is the storage type for widgets */
GtkWidget *window;
GtkWidget *button;
GtkWidget *box;
/* Initialize the toolkit */
gtk_init (&argc, &argv);
/* Create a new window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Arrow Buttons");
/* It's a good idea to do this for all windows. */
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit), NULL);
/* Sets the border width of the window. */
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
/* Create a box to hold the arrows/buttons */
box = gtk_hbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (box), 2);
gtk_container_add (GTK_CONTAINER (window), box);
/* Pack and show all our widgets */
gtk_widget_show(box);
button = create_arrow_button(GTK_ARROW_UP, GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
button = create_arrow_button(GTK_ARROW_DOWN, GTK_SHADOW_OUT);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
button = create_arrow_button(GTK_ARROW_LEFT, GTK_SHADOW_ETCHED_IN);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
button = create_arrow_button(GTK_ARROW_RIGHT, GTK_SHADOW_ETCHED_OUT);
gtk_box_pack_start (GTK_BOX (box), button, FALSE, FALSE, 3);
gtk_widget_show (window);
/* Rest in gtk_main and wait for the fun to begin! */
gtk_main ();
return(0);
}
/* example-end */

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CC = gcc
buttonbox: buttonbox.c
$(CC) `gtk-config --cflags` buttonbox.c -o buttonbox `gtk-config --libs`
clean:
rm -f *.o buttonbox

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/* example-start buttonbox buttonbox.c */
#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 *frame;
GtkWidget *bbox;
GtkWidget *button;
frame = gtk_frame_new (title);
if (horizontal)
bbox = gtk_hbutton_box_new ();
else
bbox = gtk_vbutton_box_new ();
gtk_container_set_border_width (GTK_CONTAINER (bbox), 5);
gtk_container_add (GTK_CONTAINER (frame), bbox);
/* Set the appearance of the Button Box */
gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), layout);
gtk_button_box_set_spacing (GTK_BUTTON_BOX (bbox), spacing);
gtk_button_box_set_child_size (GTK_BUTTON_BOX (bbox), child_w, child_h);
button = gtk_button_new_with_label ("OK");
gtk_container_add (GTK_CONTAINER (bbox), button);
button = gtk_button_new_with_label ("Cancel");
gtk_container_add (GTK_CONTAINER (bbox), button);
button = gtk_button_new_with_label ("Help");
gtk_container_add (GTK_CONTAINER (bbox), button);
return(frame);
}
int main( int argc,
char *argv[] )
{
static GtkWidget* window = NULL;
GtkWidget *main_vbox;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *frame_horz;
GtkWidget *frame_vert;
/* Initialize GTK */
gtk_init( &argc, &argv );
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Button Boxes");
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC(gtk_main_quit),
NULL);
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
main_vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (window), main_vbox);
frame_horz = gtk_frame_new ("Horizontal Button Boxes");
gtk_box_pack_start (GTK_BOX (main_vbox), frame_horz, TRUE, TRUE, 10);
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 10);
gtk_container_add (GTK_CONTAINER (frame_horz), vbox);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "Spread (spacing 40)", 40, 85, 20, GTK_BUTTONBOX_SPREAD),
TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "Edge (spacing 30)", 30, 85, 20, GTK_BUTTONBOX_EDGE),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "Start (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_START),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (vbox),
create_bbox (TRUE, "End (spacing 10)", 10, 85, 20, GTK_BUTTONBOX_END),
TRUE, TRUE, 5);
frame_vert = gtk_frame_new ("Vertical Button Boxes");
gtk_box_pack_start (GTK_BOX (main_vbox), frame_vert, TRUE, TRUE, 10);
hbox = gtk_hbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 10);
gtk_container_add (GTK_CONTAINER (frame_vert), hbox);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "Spread (spacing 5)", 5, 85, 20, GTK_BUTTONBOX_SPREAD),
TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "Edge (spacing 30)", 30, 85, 20, GTK_BUTTONBOX_EDGE),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "Start (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_START),
TRUE, TRUE, 5);
gtk_box_pack_start (GTK_BOX (hbox),
create_bbox (FALSE, "End (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_END),
TRUE, TRUE, 5);
gtk_widget_show_all (window);
/* Enter the event loop */
gtk_main ();
return(0);
}
/* example-end */

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CC = gcc
label: label.c
$(CC) `gtk-config --cflags` label.c -o label `gtk-config --libs`
clean:
rm -f *.o label

102
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/* example-start label label.c */
#include <gtk/gtk.h>
int main( int argc,
char *argv[] )
{
static GtkWidget *window = NULL;
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *frame;
GtkWidget *label;
/* Initialise GTK */
gtk_init(&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC(gtk_main_quit),
NULL);
gtk_window_set_title (GTK_WINDOW (window), "Label");
vbox = gtk_vbox_new (FALSE, 5);
hbox = gtk_hbox_new (FALSE, 5);
gtk_container_add (GTK_CONTAINER (window), hbox);
gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (window), 5);
frame = gtk_frame_new ("Normal Label");
label = gtk_label_new ("This is a Normal label");
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Multi-line Label");
label = gtk_label_new ("This is a Multi-line label.\nSecond line\n" \
"Third line");
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Left Justified Label");
label = gtk_label_new ("This is a Left-Justified\n" \
"Multi-line label.\nThird line");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Right Justified Label");
label = gtk_label_new ("This is a Right-Justified\nMulti-line label.\n" \
"Fourth line, (j/k)");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_RIGHT);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
vbox = gtk_vbox_new (FALSE, 5);
gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
frame = gtk_frame_new ("Line wrapped label");
label = gtk_label_new ("This is an example of a line-wrapped label. It " \
"should not be taking up the entire " /* big space to test spacing */\
"width allocated to it, but automatically " \
"wraps the words to fit. " \
"The time has come, for all good men, to come to " \
"the aid of their party. " \
"The sixth sheik's six sheep's sick.\n" \
" It supports multiple paragraphs correctly, " \
"and correctly adds "\
"many extra spaces. ");
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Filled, wrapped label");
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 "\
"my point. Here is another sentence. "\
"Here comes the sun, do de do de do.\n"\
" This is a new paragraph.\n"\
" This is another newer, longer, better " \
"paragraph. It is coming to an end, "\
"unfortunately.");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_FILL);
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
frame = gtk_frame_new ("Underlined label");
label = gtk_label_new ("This label is underlined!\n"
"This one is underlined in quite a funky fashion");
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_label_set_pattern (GTK_LABEL (label),
"_________________________ _ _________ _ ______ __ _______ ___");
gtk_container_add (GTK_CONTAINER (frame), label);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show_all (window);
gtk_main ();
return(0);
}
/* example-end */