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RGtk2 (version 2.20.31)

gdkWindowShapeCombineMask: gdkWindowShapeCombineMask

Description

Applies a shape mask to window. Pixels in window corresponding to set bits in the mask will be visible; pixels in window corresponding to unset bits in the mask will be transparent. This gives a non-rectangular window.

Usage

gdkWindowShapeCombineMask(object, shape.mask = NULL, offset.x, offset.y)

Arguments

object
shape.mask
shape mask
offset.x
X position of shape mask with respect to window
offset.y
Y position of shape mask with respect to window

Details

If mask is NULL, the shape mask will be unset, and the x/y parameters are not used. On the X11 platform, this uses an X server extension which is widely available on most common platforms, but not available on very old X servers, and occasionally the implementation will be buggy. On servers without the shape extension, this function will do nothing. This function works on both toplevel and child windows.