RGtk2: gdkWindowShapeCombineRegion – R documentation

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gdkWindowShapeCombineRegion

Description

Makes pixels in window outside shape.region be transparent, so that the window may be nonrectangular. See also gdkWindowShapeCombineMask to use a bitmap as the mask.

Usage

gdkWindowShapeCombineRegion(object, shape.region = NULL, offset.x, 
    offset.y)

Arguments

`object`	a `GdkWindow`
`shape.region`	region of window to be non-transparent
`offset.x`	X position of `shape.region` in `window` coordinates
`offset.y`	Y position of `shape.region` in `window` coordinates

Details

If shape.region is NULL, the shape will be unset, so the whole window will be opaque again. offset.x and offset.y are ignored if shape.region is NULL.

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.

Author(s)

Derived by RGtkGen from GTK+ documentation

RGtk2

R Bindings for Gtk 2.8.0 and Above

v2.20.36

GPL

Authors

Michael Lawrence <michafla@gene.com> and Duncan Temple Lang <duncan@wald.ucdavis.edu>

Initial release