How can I make for example only a rectangle inside the window have opacity like 50% or something like that and for that part to have the effect of WS_EX_TRANSPARENT so that mouse clicks will go through it?
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How can I make for example only a rectangle inside the window have opacity like 50% or something like that and for that part to have the effect of WS_EX_TRANSPARENT so that mouse clicks will go through it?
I do not think it is possible simply by setting WS_EX_TRANSPARENT, but it can be accomplished using two windows, create a window with a hole, using SetWindowRgn, and inside that hole put another transparent window using WS_EX_LAYERED and WS_EX_TRANSPARENT styles.