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win32 message proc

Started by Brobanx Aug 10, 2002 at 8:04 PM 3 replies 400+ views

Original Post

Aug 10, 2002 at 8:04 PM

Ok, quick question. When I make a button by using the CreateWindow() function, I say that the classname is "BUTTON", and give a valid HWND as its parent. Do messages from the button get sent to the parent window''s message procedure? If not, what message procedure are they sent to? (since I can''t define a message procedure for a predefined windows class)

zealouselixir

Aug 10, 2002 at 9:19 PM

How are you defining the "BUTTON" window class? I''m assuming that''s your own thing, and if so, you give it the WndProc via the lpfnWndProc member of the window class object. Therefore, messages will be sent to the specified procedure with the hWnd param equal to the HWND returned by CreateWindow when you make your button.

Peace,
ZE.

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Brobanx

Aug 10, 2002 at 9:32 PM

In the Win32 SDK docs it says the BUTTON class is predefined (along with others like STATIC, RICHEDIT, etc...).

zealouselixir

Aug 10, 2002 at 9:43 PM

Yeah, see, that was my concern. I didn''t know that the button class was predefined. In that case, I don''t know. I''ll keep looking though (This is what MSDN coughed up).

One thing though: Is is definately "BUTTON", or could it just be BUTTON? MSDN doesn''t have quotes, which I found odd.

UPDATE: ButtonProc or OwnDrawProc, perhaps? I just don''t get how you specify the function, if you can.

G''luck,
ZE.

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Oluseyi

Aug 10, 2002 at 10:53 PM

quote:
Original post by Brobanx
Do messages from the button get sent to the parent window''s message procedure?

Yes, and they''re handled via the WM_COMMAND message.

ZE: It''s "BUTTON". Some of the newer windowclasses that you gain with IE updates have their class names macro''d - REBARCLASS_NAME (or something like that) for "Win32_ReBarCtrl" (or something like that). All very inconsistent.

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