preselect the text in the dialog to allow replacing it easier (just as in the text entry dialog)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@25307 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/numdlgg.cpp

@@ -156,6 +156,7 @@ wxNumberEntryDialog::wxNumberEntryDialog(wxWindow *parent,
 
     Centre( wxBOTH );
 
+    m_spinctrl->SetSelection(-1, -1);
     m_spinctrl->SetFocus();
 
     wxEndBusyCursor();