Multiple fixes for OS/2 including getting rid of the C++ unfriendly direct.h and substituting control program io. Various GUI fixes, too.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7044 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/window.cpp

@@ -2797,8 +2797,6 @@ bool wxWindow::HandlePaint()
 {
     HRGN                            hRgn = NULLHANDLE;
     wxPaintEvent                    vEvent;
-    HPS                             hPS;
-    RECTL                           vRect;
 
     if (::WinQueryUpdateRegion(GetHwnd(), hRgn) == RGN_NULL)
     {
@@ -2807,10 +2805,6 @@ bool wxWindow::HandlePaint()
     }
     m_updateRegion = wxRegion(hRgn);
 
-    hPS = WinBeginPaint(GetHwnd(), 0L, &vRect);
-    WinFillRect(hPS, &vRect, SYSCLR_WINDOW);
-    WinEndPaint(hPS);
-
     vEvent.SetEventObject(this);
     return (GetEventHandler()->ProcessEvent(vEvent));
 } // end of wxWindow::HandlePaint