controls sample is now able to use default command line arguments

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12321 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/controls/controls.cpp

@@ -314,6 +314,10 @@ enum
 
 bool MyApp::OnInit()
 {
+    // use standard command line handling:
+    if ( !wxApp::OnInit() )
+        return FALSE;
+
     // parse the cmd line
     int x = 50,
         y = 50;