GTK+ Forums

cofcof · Familiar Face Joined: 02 Apr 2008 Posts: 29

Hi All.

I am using a GtkExpander such that the user access to the help
by clicking on the little arrow to expand the text. However, when the user click again on the arrow, the text diseappear (that's good) but the expander still take the same amount of space (that's not good) instead of shrinking itself (and the windows containing it)

Does anyone know to make it possible that the expander shrink back to it's initial size?

Cheers

CofCof

Micah Carrick · Posted: Mon May 19, 2008 3:50 am Post subject:

This comes down to how the expander is packed and how other child elements of it's parent are packed. First thing I would think is that you should change the "expand" and "fill" properties of the GtkExpander to FALSE.

If you don't entirely understand packing in GTK, it's worth reading up on. I present some examples in my tutorial: http://www.micahcarrick.com/12-24-2007/gtk-glade-tutorial-part-1.html#How_Packing_Effects_the_Layout

cofcof · Familiar Face Joined: 02 Apr 2008 Posts: 29

Hi Micah

Thanks for your suggestion, but it doesn't solve my problem :(

In fact i have done a minimalistic glade file to illustrate my example,
and there is no 'expand' nor 'fill' proprieties available for the widget I use
(The propriety fill or expand is not made available for those widget by glade, as far as I understand because there is no container like Hbox or stuff like that that I use for this example)

This is my minimalistic example (see picture):
1. At start
2. When I expand the expander
3. When I un-expand the expander.
I would like 3. to come back to something close to 1.

Here is the glade file:

Code: (XML/HTML)

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE glade-interface SYSTEM "glade-2.0.dtd">

<glade-interface>
<widget class="GtkWindow" id="window">
<property name="visible">True</property>
<property name="title" translatable="yes">window</property>
<child>
<widget class="GtkExpander" id="expander1">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="events">GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK</property>
<child>
<widget class="GtkLabel" id="label2">
<property name="visible">True</property>
<property name="events">GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK</property>
<property name="label" translatable="yes">Hello how are you?
Fine! Exept I can't solve
this expander problem :(
Helpppppppp :)</property>
</widget>
</child>
<child>
<widget class="GtkLabel" id="label1">
<property name="visible">True</property>
<property name="events">GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK</property>
<property name="label" translatable="yes">expander</property>
</widget>
<packing>
<property name="type">label_item</property>
</packing>
</child>
</widget>
</child>
</widget>
</glade-interface>

Thanks for any help :)

CofCof

Micah Carrick · Posted: Tue May 20, 2008 6:28 am Post subject:

Change the resize property of the window to "FALSE" so that it snaps around the expander as it's size changes. It's the same concept as expand and fill in something like a GtkBox.

cofcof · Familiar Face Joined: 02 Apr 2008 Posts: 29

Thanks Micah

That's what I was looking for :)

CofCof