Ensure there is valid context for DrawRectangle

[wxWidgets.git] / src / msw / utilsexc.cpp

diff --git a/src/msw/utilsexc.cpp b/src/msw/utilsexc.cpp
index cd3572e44d108d3be17a1ea90d9f019825130a47..9c959de05ed4231c672ab89a6c4f8ea036943bc9 100644 (file)
--- a/src/msw/utilsexc.cpp
+++ b/src/msw/utilsexc.cpp
@@ -82,6 +82,15 @@
 
 #include "wx/msw/private/hiddenwin.h"
 
+// FIXME-VC6: These are not defined in VC6 SDK headers.
+#ifndef BELOW_NORMAL_PRIORITY_CLASS
+    #define BELOW_NORMAL_PRIORITY_CLASS 0x4000
+#endif
+
+#ifndef ABOVE_NORMAL_PRIORITY_CLASS
+    #define ABOVE_NORMAL_PRIORITY_CLASS 0x8000
+#endif
+
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
@@ -852,6 +861,29 @@ long wxExecute(const wxString& cmd, int flags, wxProcess *handler,
         }
     }
 
+    // Translate wxWidgets priority to Windows conventions.
+    if ( handler )
+    {
+        unsigned prio = handler->GetPriority();
+        if ( prio <= 20 )
+            dwFlags |= IDLE_PRIORITY_CLASS;
+        else if ( prio <= 40 )
+            dwFlags |= BELOW_NORMAL_PRIORITY_CLASS;
+        else if ( prio <= 60 )
+            dwFlags |= NORMAL_PRIORITY_CLASS;
+        else if ( prio <= 80 )
+            dwFlags |= ABOVE_NORMAL_PRIORITY_CLASS;
+        else if ( prio <= 99 )
+            dwFlags |= HIGH_PRIORITY_CLASS;
+        else if ( prio <= 100 )
+            dwFlags |= REALTIME_PRIORITY_CLASS;
+        else
+        {
+            wxFAIL_MSG(wxT("invalid value of thread priority parameter"));
+            dwFlags |= NORMAL_PRIORITY_CLASS;
+        }
+    }
+
     bool ok = ::CreateProcess
                 (
                     // WinCE requires appname to be non null