Fixed exposure event on zero size windows (STR #1824)

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@6005 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

2 files changed, 8 insertions, 1 deletions

diff --git a/CHANGES b/CHANGES
index 8e474218e..64ce0d098 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5,6 +5,7 @@ CHANGES IN FLTK 1.1.8
 	  STR #1639, STR #1645, STR #1644, STR #1792, STR #1793,
 	  STR #1742, STR #1777, STR #1794, STR #1827, STR #1843,
 	  STR #1796)
+	- Fixed exposure event on zero size windows (STR #1824)
 	- Fixed overlay offset for OS X Quartz (STR #1729)
 	- gl_font() support for Xft+X11 (STR #1809)
 	- Fl_Gl_Window::mode() needed to hide and show the window
diff --git a/src/Fl_win32.cxx b/src/Fl_win32.cxx
index 243e82ed7..27a14edc7 100644
--- a/src/Fl_win32.cxx
+++ b/src/Fl_win32.cxx
@@ -1118,7 +1118,13 @@ void Fl_Window::resize(int X,int Y,int W,int H) {
   }
   if (is_a_resize) {
     Fl_Group::resize(X,Y,W,H);
-    if (visible_r()) {redraw(); i->wait_for_expose = 1;}
+    if (visible_r()) {
+      redraw(); 
+      // only wait for exposure if this window has a size - a window 
+      // with no width or height will never get an exposure event
+      if (W>0 && H>0)
+        i->wait_for_expose = 1;
+    }
   } else {
     x(X); y(Y);
     flags |= SWP_NOSIZE;