hwnd (HWND) - input

Window handle.

lb (LONG) - input

Zero-based index into the window words.

The units of b are bytes. Valid values are zero through (cbWindowData -4), where cbWindowData is the parameter in WinRegisterClass that specifies the number of bytes available for application-defined storage.

The value QWP_PFNWP can be used as the index for the address of the window procedure for the window.

pp (PVOID) - input

Pointer value to store in the window words.

rc (BOOL) - returns

Success indicator.

TRUE

Successful completion
FALSE
Error occurred.

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