This function modifies or removes an arbitrary X11 window property of type UTF8_STRING. If the given window is not a toplevel window, it is ignored.
a GdkWindow. [type GdkX11Window]
Property name, will be interned as an X atom
Property value, or NULL to delete. [allow-none] Since 3.4
See Implementation
This function modifies or removes an arbitrary X11 window property of type UTF8_STRING. If the given window is not a toplevel window, it is ignored.