A container which allows you to position widgets at fixed coordinates
<gtk-fixed> widget is a container which can place child widgets at
fixed positions and with fixed sizes, given in pixels.
performs no automatic layout management.
For most applications, you should not use this container! It keeps you from
having to learn about the other GTK+ containers, but it results in broken
<gtk-fixed>, the following things will result in
truncated text, overlapping widgets, and other display bugs:
Themes, which may change widget sizes.
Fonts other than the one you used to write the app will of course change the size of widgets containing text; keep in mind that users may use a larger font because of difficulty reading the default, or they may be using Windows or the framebuffer port of GTK+, where different fonts are available.
Translation of text into other languages changes its size. Also, display of non-English text will use a different font in many cases.
In addition, the fixed widget can't properly be mirrored in right-to-left
languages such as Hebrew and Arabic. i.e. normally GTK+ will flip the interface
to put labels to the right of the thing they label, but it can't do that with
<gtk-fixed>. So your application will not be usable in right-to-left
Finally, fixed positioning makes it kind of annoying to add/remove GUI elements, since you have to reposition all the other elements. This is a long-term maintenance problem for your application.
If you know none of these things are an issue for your application, and prefer
the simplicity of
<gtk-fixed>, by all means use the widget. But you
should be aware of the tradeoffs.
Adds a widget to a
<gtk-fixed>container at the given position.
- the widget to add.
- the horizontal position to place the widget at.
- the vertical position to place the widget at.
Moves a child of a
<gtk-fixed>container to the given position.
- the child widget.
- the horizontal position to move the widget to.
- the vertical position to move the widget to.
<gtk-fixed>) ⇒ (ret
Gets whether the
<gtk-fixed>has its own
#t’ if fixed has its own window.
Sets whether a
<gtk-fixed>widget is created with a separate
<gdk-window>for widget->window or not. (By default, it will be created with no separate
<gdk-window>). This function must be called while the
<gtk-fixed>is not realized, for instance, immediately after the window is created.
This function was added to provide an easy migration path for older applications which may expect
<gtk-fixed>to have a separate window.
#t’ if a separate window should be created