Returns %TRUE if @context is in the process of drawing to its surface.
This is the case between calls to [method@Gdk.DrawContext.begin_frame]
and [method@Gdk.DrawContext.end_frame]. In this situation, drawing commands
may be effecting the contents of the @context's surface.
Returns %TRUE if @context is in the process of drawing to its surface.
This is the case between calls to [method@Gdk.DrawContext.begin_frame] and [method@Gdk.DrawContext.end_frame]. In this situation, drawing commands may be effecting the contents of the @context's surface.