Whether this can rely on having its alpha channel drawn correctly.
Use is_composited instead.
On X11 this function returns whether a compositing manager is running for this’s screen.
Please note that the semantics of this call will change in the future if used on a widget that has a composited window in its hierarchy ( as set by set_composited).
| this |
a Widget |
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true if the widget can rely on its alpha channel being drawn correctly. |