CODEWITHSUNDEEP
c++windowswinapi
Razvi
Razvi

Reputation: 2818

How can I make only a part of the window transparent? (WIN32)

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?

Upvotes: 4

Views: 2682

Answers (3)

Cristian Adam
Cristian Adam

Reputation: 4834

Take a look at this CodeProject article: Cool, Semi-transparent and Shaped Dialogs with Standard Controls for Windows 2000 and Above.

Upvotes: 1

jussij
jussij

Reputation: 10580

Take a look at the SetLayeredWindowAttributes Win32 function.

It can be used to set the opacity and transparency of a window.

Upvotes: 2

Anurag Uniyal
Anurag Uniyal

Reputation: 88847

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.

Upvotes: 4

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