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Manually repainting owner draw buttons?

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Manually repainting owner draw buttons? C programming forum discussing all C derivatives, including C#, C++, Object-C, and even plain old vanilla C. These languages are low level languages, and used on projects such as device drivers, compilers, and even whole computer operating systems.

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  #1  
Old October 1st, 2002, 02:07 PM
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Unhappy Manually repainting owner draw buttons?
Hello,
I was wondering how I could get my owner draw buttons to repaint. For example, I want them to repaint when a user clicks the mouse...I tried sending a WM_DRAWITEM message, but that doesn't seem to work. Any suggestions would be great. (win32 and c)

Thanks
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Old October 1st, 2002, 03:56 PM
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Are you sure that your owner-drawn buttons have the BS_OWNERDRAW style set?
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Old October 2nd, 2002, 11:07 AM
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Hey,
I'm positive that I am...I am manually drawing my button. Maybe I'm just getting the lParam and wParam wrong when sending the WM_DRAWITEM message. THe format that I am using is, lParam = NULL, and wParam = ID of control sending the message.
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Old October 2nd, 2002, 03:39 PM
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lParam should be a pointer to a DRAWITEMSTRUCT structure. See http://msdn.microsoft.com/library/d...wm_drawitem.asp for details.

Also, here's an example using a button control (using MFC though, but you should be able to adapt it to your needs), http://msdn.microsoft.com/library/d...3a.drawitem.asp
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