Base Class Window Procedure

BaseClassWindowProc.cpp

EXTERNC ACLWINCB(LRESULT) ACLWindowDispatchProc
(
	IN HWND 	hWnd,
	IN UINT 	uMsg,
	IN WPARAM	wParam,
	IN LPARAM	lParam
)
{
    UNALIGNED ACLWinBase*   pWindow 	= NULL;
	PWINMSGHNDLR 	        pHandler 	= NULL;
	LRESULT		            lResult		= 1;

    switch (uMsg)
	{
	    case WM_CREATE:
		{
			//	lparam is passed with a pointer to the "this" of our
			//	object. Grab it here and "attach" it to the window
			//	proc.
			//
			pWindow = (ACLWinBase*)(((LPCREATESTRUCT)lParam)->lpCreateParams);
			pWindow->SetBoundWindow(hWnd);
	        break;
		}    
	    default:
	    {
	        //	By default we're going to grab a pointer to the "this" we
			//	saved at Init time.
			//
			pWindow = ACLPrivateGetBoundWindow(hWnd);
	        break;
	    }
	}	//	switch

	if (pWindow)
	{
		lResult = pWindow->DispatchMessage(uMsg, wParam, lParam);
	}

	//	If we couldn't get a window to dispatch to or the message returned 1
	//	then go ahead and call DefWindowProc.
	//
	if (pWindow == NULL || lResult == 1)
	{
		lResult = ::DefWindowProc(hWnd, uMsg, wParam, lParam);
	}

	return lResult;
} 	// ACLWindowDispatchProc