PangoLayout or PangoLayoutLine. This function is thus
only useful when you call low level functions like pangoRendererDrawGlyphs
directly, or in the 'prepare_run' virtual function of a subclass of
GdkPangoRenderer.gdkPangoRendererSetStipple(object, part, stipple)objectpartPangoRenderPart]  the part to render with the stipplestippleGdkBitmap]  the new stipple value.