relayout the sizer containing the button after changing its label as this may change the button size

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61166 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/widgets/button.cpp

@@ -475,6 +475,8 @@ void ButtonWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 void ButtonWidgetsPage::OnButtonChangeLabel(wxCommandEvent& WXUNUSED(event))
 {
     m_button->SetLabel(m_textLabel->GetValue());
+
+    m_sizerButton->Layout();
 }
 
 void ButtonWidgetsPage::OnButton(wxCommandEvent& WXUNUSED(event))