gdkScreenGetRgbaColormap: gdkScreenGetRgbaColormap
Description
Gets a colormap to use for creating windows or pixmaps with an
alpha channel. The windowing system on which GTK+ is running
may not support this capability, in which case NULL will
be returned. Even if a non-NULL value is returned, its
possible that the window's alpha channel won't be honored
when displaying the window on the screen: in particular, for
X an appropriate windowing manager and compositing manager
must be running to provide appropriate display.Usage
gdkScreenGetRgbaColormap(object)
Value
GdkColormap] a colormap to use for windows with
an alpha channel or NULL if the capability is not available. [ transfer none ]
Details
This functionality is not implemented in the Windows backend.
For setting an overall opacity for a top-level window, see
gdkWindowSetOpacity.
Since 2.8