How Can I Change the Opacity of a Dialog?

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I have a Dialog that creates a window in ::OnCreate. I want to change the opacity of this dialog not the window. I Put this code in ::Oncreate too (before the code creating CWnd):

MIDL

LONG ExtendedStyle = GetWindowLong( GetSafeHwnd(), GWL_EXSTYLE );
SetWindowLong( GetSafeHwnd(), GWL_EXSTYLE, ExtendedStyle | WS_EX_LAYERED );
SetLayeredWindowAttributes( 0, 100, LWA_ALPHA );

this code makes both Dialog and Window transparent.
How can I set this attribute in my desired way?

Posted 2-Jul-11 23:13pm

Minoo Khazeni

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Albert Holguin 3-Jul-11 13:20pm

A dialog is a window... can you clarify what you're trying to do?

Minoo Khazeni 4-Jul-11 5:59am

I have a parent window and a child window, I want to change the opacity of only the parent window.
Is it clear?

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#realJSOP · Answer 1 · 2011-07-03T02:16:00

Solution 1

Try it this way:

C++

ModifyStyleEx(0, WS_EX_LAYERED);
SetLayeredWindowAttributes(0, 255 * 0.50, LWA_ALPHA);

Posted 3-Jul-11 2:16am

#realJSOP

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Minoo Khazeni 4-Jul-11 4:34am

it didn't work. :(
any other solution?