forked from AuroraMiddleware/gtk
cf9f0b7741
Sat Oct 13 07:09:30 2001 Tim Janik <timj@gtk.org>
* gtk/gtkbindings.c (gtk_binding_set_add_path): to compare pattern
specs, use g_pattern_spec_equal() instead of direct field accesses.
upon compressing two equal paths of the same type, the resulting
priority has to be the maximum.
* gtk/gtkenums.h (enum): take GTK_PATH_PRIO_MASK out of the
GtkPathPriorityType enum and make it a macro.
230 lines
6.4 KiB
Plaintext
230 lines
6.4 KiB
Plaintext
<!-- ##### SECTION Title ##### -->
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GtkCombo
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<!-- ##### SECTION Short_Description ##### -->
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a text entry field with a dropdown list.
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<!-- ##### SECTION Long_Description ##### -->
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<para>
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The #GtkCombo widget consists of a single-line text entry field and a drop-down
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list. The drop-down list is displayed when the user clicks on a small arrow
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button to the right of the entry field.
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</para>
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<para>
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The drop-down list is a #GtkList widget and can be accessed using the
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<structfield>list</structfield> member of the #GtkCombo-struct.
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List elements can contain arbitrary widgets, but if an element is not a
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plain label, then you must use the gtk_list_set_item_string() function.
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This sets the string which will be placed in the text entry field when the
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item is selected.
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</para>
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<para>
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By default, the user can step through the items in the list using the
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arrow (cursor) keys, though this behaviour can be turned off with
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gtk_combo_set_use_arrows().
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</para>
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<para>
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Normally the arrow keys are only active when the contents of the text entry
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field matches one of the items in the list. If the contents of the entry field
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do not match any of the list items, then pressing the arrow keys does nothing.
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However, by calling gtk_combo_set_use_arrows_always() you can specify that the
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arrow keys are always active. If the contents of the entry field does not match
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any of the items in the list, then pressing the up or down arrow key will set
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the entry field to the last or first item in the list, respectively.
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</para>
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<example id="gtkcombo-simple-example">
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<title>Creating a #GtkCombo widget with simple text items.</title>
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<programlisting>
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GtkWidget *combo;
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GList *items = NULL;
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items = g_list_append (items, "First Item");
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items = g_list_append (items, "Second Item");
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items = g_list_append (items, "Third Item");
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items = g_list_append (items, "Fourth Item");
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items = g_list_append (items, "Fifth Item");
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combo = gtk_combo_new ();
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gtk_combo_set_popdown_strings (GTK_COMBO (combo), items);
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</programlisting>
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</example>
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<example>
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<title>Creating a #GtkCombo widget with a complex item.</title>
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<programlisting>
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GtkWidget *combo, *item, *hbox, *arrow, *label;
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combo = gtk_combo_new ();
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item = gtk_list_item_new ();
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gtk_widget_show (item);
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/* You can put almost anything into the GtkListItem widget. Here we will use
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a horizontal box with an arrow and a label in it. */
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hbox = gtk_hbox_new (FALSE, 3);
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gtk_container_add (GTK_CONTAINER (item), hbox);
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gtk_widget_show (hbox);
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arrow = gtk_arrow_new (GTK_ARROW_RIGHT, GTK_SHADOW_OUT);
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gtk_widget_show (arrow);
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gtk_box_pack_start (GTK_BOX (hbox), pixmap, FALSE, FALSE, 0);
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label = gtk_label_new ("First Item");
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gtk_widget_show (label);
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gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
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/* You must set the string to display in the entry field when the item is
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selected. */
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gtk_combo_set_item_string (GTK_COMBO (combo), GTK_ITEM (item), "1st Item");
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/* Now we simply add the item to the combo's list. */
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gtk_container_add (GTK_CONTAINER (GTK_COMBO (combo)->list), item);
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</programlisting>
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</example>
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<!-- ##### SECTION See_Also ##### -->
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<para>
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</para>
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<!-- ##### STRUCT GtkCombo ##### -->
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<para>
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The #GtkFixedChild-struct struct contains the following fields.
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(These fields should be considered read-only. They should never be set by
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an application.)
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<informaltable pgwide=1 frame="none" role="struct">
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<tgroup cols="2"><colspec colwidth="2*"><colspec colwidth="8*">
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<tbody>
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<row>
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<entry>#GtkWidget *entry;</entry>
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<entry>the text entry field.</entry>
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</row>
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<row>
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<entry>#GtkWidget *list;</entry>
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<entry>the list shown in the drop-down window.</entry>
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</row>
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</tbody></tgroup></informaltable>
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</para>
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<!-- ##### FUNCTION gtk_combo_new ##### -->
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<para>
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Creates a new #GtkCombo.
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</para>
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@Returns: a new #GtkCombo.
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<!-- ##### FUNCTION gtk_combo_set_popdown_strings ##### -->
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<para>
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Convenience function to set all of the items in the popup list.
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(See the <link linkend="gtkcombo-simple-example">example</link> above.)
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</para>
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@combo: a #GtkCombo.
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@strings: a list of strings.
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<!-- ##### FUNCTION gtk_combo_set_value_in_list ##### -->
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<para>
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Specifies whether the value entered in the text entry field must match one of
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the values in the list. If this is set then the user will not be able to
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perform any other action until a valid value has been entered.
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</para>
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<para>
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If an empty field is acceptable, the @ok_if_empty parameter should be TRUE.
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</para>
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@combo: a #GtkCombo.
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@val: TRUE if the value entered must match one of the values in the list.
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@ok_if_empty: TRUE if an empty value is considered valid.
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<!-- ##### FUNCTION gtk_combo_set_use_arrows ##### -->
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<para>
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Specifies if the arrow (cursor) keys can be used to step through the items in
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the list. This is on by default.
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</para>
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@combo: a #GtkCombo.
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@val: TRUE if the arrow keys can be used to step through the items in the list.
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<!-- ##### FUNCTION gtk_combo_set_use_arrows_always ##### -->
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<para>
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Specifies if the arrow keys will still work even if the current contents of the
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#GtkEntry field do not match any of the list items.
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</para>
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@combo: a #GtkCombo.
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@val:
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<!-- ##### FUNCTION gtk_combo_set_case_sensitive ##### -->
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<para>
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Specifies whether the text entered into the #GtkEntry field and the text in
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the list items is case sensitive.
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</para>
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<para>
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This may be useful, for example, when you have called
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gtk_combo_set_value_in_list() to limit the values entered, but you are not
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worried about differences in case.
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</para>
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@combo: a #GtkCombo.
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@val:
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<!-- ##### FUNCTION gtk_combo_set_item_string ##### -->
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<para>
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Sets the string to place in the #GtkEntry field when a particular list item is
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selected. This is needed if the list item is not a simple label.
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</para>
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@combo: a #GtkCombo.
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@item: a #GtkItem which
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@item_value: the string to place in the #GtkEntry when @item is selected.
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<!-- ##### FUNCTION gtk_combo_disable_activate ##### -->
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<para>
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Stops the #GtkCombo widget from showing the popup list when the #GtkEntry
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emits the "activate" signal, i.e. when the Return key is pressed.
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This may be useful if, for example. you want the Return key to close a dialog
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instead.
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</para>
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@combo: a #GtkCombo.
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<!-- ##### ARG GtkCombo:enable-arrow-keys ##### -->
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<para>
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</para>
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<!-- ##### ARG GtkCombo:enable-arrows-always ##### -->
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<para>
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</para>
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<!-- ##### ARG GtkCombo:case-sensitive ##### -->
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<para>
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</para>
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<!-- ##### ARG GtkCombo:allow-empty ##### -->
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<para>
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</para>
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<!-- ##### ARG GtkCombo:value-in-list ##### -->
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<para>
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</para>
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