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DefWindowProc info Overview Group

The DefWindowProc function calls the default window procedure to provide default processing for any window messages that an application does not process. This function ensures that every message is processed. DefWindowProc is called with the same parameters received by the window procedure.

LRESULT DefWindowProc(

HWND hWnd,

// handle to window

UINT Msg,

// message identifier

WPARAM wParam,

// first message parameter

LPARAM lParam

// second message parameter

);

Parameters

hWnd: Identifies the window procedure that received the message.
Msg: Specifies the message.
wParam: Specifies additional message information. The content of this parameter depends on the value of the Msg parameter.
lParam: Specifies additional message information. The content of this parameter depends on the value of the Msg parameter.

Return Values

The return value is the result of the message processing and depends on the message.

HWND hWnd,	// handle to window
UINT Msg,	// message identifier
WPARAM wParam,	// first message parameter
LPARAM lParam	// second message parameter
);

DefWindowProc info Overview Group

Parameters

Return Values

See Also