// Create a DC representing the whole screen
 wxScreenDC::wxScreenDC()
 {
-    // TODO
-}
+    m_hDC = ::WinOpenWindowDC(HWND_DESKTOP);
+    m_hPS = ::WinGetScreenPS(HWND_DESKTOP);
+    ::GpiSetBackMix(m_hPS, BM_LEAVEALONE);
+} // end of wxScreenDC::wxScreenDC()
 
-wxScreenDC::~wxScreenDC()
-{
-    // TODO
-}