Don't hard code position of the drawing sample window and increase its size.

Hardcoding position to 50,50 is inconvenient, let the window manager position
the window as configured by user. Also, the vertical size of the sample was
too small to see the contents of most pages, increase it.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64462 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/drawing/drawing.cpp

@@ -345,7 +345,7 @@ bool MyApp::OnInit()
 
     // Create the main application window
     MyFrame *frame = new MyFrame(wxT("Drawing sample"),
-                                 wxPoint(50, 50), wxSize(550, 340));
+                                 wxDefaultPosition, wxSize(550, 840));
 
     // Show it and tell the application that it's our main window
     frame->Show(true);