DefFrameProc info  Overview  Group

The DefFrameProc function provides default processing for any window messages that the window procedure of a multiple document interface (MDI) frame window does not process. All window messages that are not explicitly processed by the window procedure must be passed to the DefFrameProc function, not the DefWindowProc function.

LRESULT DefFrameProc(

Parameters

hWnd

Identifies the MDI frame window.

hWndMDIClient

Identifies the MDI client window.

uMsg

Specifies the message to be processed.

wParam

Specifies additional message-specific information.

lParam

Specifies additional message-specific information.

Return Values

The return value specifies the result of the message processing and depends on the message. If the hWndMDIClient parameter is NULL, the return value is the same as for the DefWindowProc function.

Remarks

When an application’s window procedure does not handle a message, it typically passes the message to the DefWindowProc function to process the message. MDI applications use the DefFrameProc and DefMDIChildProc functions instead of DefWindowProc to provide default message processing. All messages that an application would usually pass to DefWindowProc (such as nonclient messages and the WM_SETTEXT message) should be passed to DefFrameProc instead. The DefFrameProc function also handles the following messages:

See Also

DefMDIChildProc, DefWindowProc, WM_SETTEXT 

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