don't even try running Unicode programs under Win9x

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7279 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/app.cpp

@@ -187,6 +187,27 @@ LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 //// Initialize
 bool wxApp::Initialize()
 {
+    // the first thing to do is to check if we're trying to run an Unicode
+    // program under Win9x - if so, abort right now as it has no chance to
+    // work
+#if wxUSE_UNICODE
+    if ( wxGetOsVersion() != wxWINDOWS_NT )
+    {
+        // note that we can use MessageBoxW() as it's implemented even under
+        // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
+        // used by wxLocale are not
+        ::MessageBox
+        (
+         NULL,
+         _T("This program uses Unicode and requires Windows NT/2000.\nProgram aborted."),
+         _T("wxWindows Fatal Error"),
+         MB_ICONERROR | MB_OK
+        );
+
+        return FALSE;
+    }
+#endif // wxUSE_UNICODE
+
     // Some people may wish to use this, but
     // probably it shouldn't be here by default.
 #ifdef __WXDEBUG__