diff --git a/include/wx/msw/frame.h b/include/wx/msw/frame.h
index 64e30f3e9b..c54d5f66f8 100644
--- a/include/wx/msw/frame.h
+++ b/include/wx/msw/frame.h
@@ -78,6 +78,9 @@ public:
     // process menu command: returns TRUE if processed
     bool ProcessCommand(int id);
 
+    // make the window modal (all other windows unresponsive)
+    virtual void MakeModal(bool modal = TRUE);
+
     // Set icon
     virtual void SetIcon(const wxIcon& icon);
 
diff --git a/src/msw/frame.cpp b/src/msw/frame.cpp
index f5558c492d..2c459e4c3a 100644
--- a/src/msw/frame.cpp
+++ b/src/msw/frame.cpp
@@ -791,6 +791,20 @@ void wxFrame::IconizeChildFrames(bool bIconize)
     }
 }
 
+
+// make the window modal (all other windows unresponsive)
+void wxFrame::MakeModal(bool modal)
+{
+    if (modal) {
+        wxEnableTopLevelWindows(FALSE);
+        Enable(TRUE);           // keep this window enabled
+    }
+    else {
+        wxEnableTopLevelWindows(TRUE);
+    }
+}
+
+
 // ===========================================================================
 // message processing
 // ===========================================================================