Undo change at r12792 (24 march 2018) because test/offscreen does not work with it.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12867 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 2 insertions, 1 deletions

diff --git a/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.cxx b/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.cxx
index 687950fc9..9d750ba5f 100644
--- a/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.cxx
+++ b/src/drivers/WinAPI/Fl_WinAPI_Window_Driver.cxx
@@ -307,7 +307,7 @@ void Fl_WinAPI_Window_Driver::flush_double()
   }
   if (pWindow->damage() & ~FL_DAMAGE_EXPOSE) {
     fl_clip_region(i->region); i->region = 0;
-#if 0 /* Short form that transiently changes the current Fl_Surface_Device */
+#if 1 /* Short form that transiently changes the current Fl_Surface_Device */
     fl_begin_offscreen(other_xid);
     fl_graphics_driver->clip_region( 0 );
     draw();
@@ -317,6 +317,7 @@ void Fl_WinAPI_Window_Driver::flush_double()
      The code run in the window draw() method can call Fl_Surface_Device::surface()
      and conclude that it's drawing to the display, which is ultimately true
      for an Fl_Double_Window.
+     With this form, test/offscreen does not work  ==> needs investigation.
      */
     HDC sgc = fl_gc;
     Window save_w = fl_window; fl_window = (Window)other_xid;