Attempting to save current screen

[randem]

Here is the code that I can not get to work to save the current screen and to restore it. What did I do incorretly?

HDC SaveScn;

// other variables in code

	 tx=GetSystemMetrics(SM_CXFULLSCREEN);
	 ty=GetSystemMetrics(SM_CYFULLSCREEN);

void SaveScreen()
{
HDC CurScn;

	 // Save all graphics on screen
	
	 SaveScn = CreateCompatibleDC(0);
	 CurScn = GetDC(OrghWnd);
     BitBlt(SaveScn, 0, 0, tx, tx+360, CurScn, 0, 0, SRCCOPY);
	 ReleaseDC(OrghWnd,CurScn);
 	 GetKey(OrghWnd);
}

void RestoreScreen()
{
HDC CurScn;

	 // Restore saved screen
	
 	 CurScn = GetDC(OrghWnd);
//     SelectObject(CurScn, SaveScn);
     BitBlt(CurScn, 0, 0, tx, ty+360, SaveScn, 0, 0, SRCCOPY);
 	 ReleaseDC(OrghWnd,CurScn);
	 GetKey(OrghWnd);
}