WinAPI : similar properties to TForm TransparentColor TransparentColorValue

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In C + + Builder in the TForm properties there are parameters like TransparentColor and TransparentColorValue.
But I created the window with the functions WinAPI RegisterClassEx, CreateWindowEx.
Are there properties similar to TransparentColor and TransparentColorValue in WinAPI? And how to use them?
I need to create a window with transparent areas which defined for example green color.

Posted 13-Jun-13 7:42am

Igor-84

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Matthew Faithfull · Answer 1 · 2013-06-13T09:13:00

Solution 1

The technique you need to master is Layered Windows. Not a beginner topic but reasonable as long as you are targeting recentish versions of Windows.
A Search like this[^] on Code Project will give you lots of great articles explaining how.

Posted 13-Jun-13 9:13am

Matthew Faithfull