Generate events when wxRadioButton is checked under wxQt

Closes https://github.com/wxWidgets/wxWidgets/pull/1210

src/qt/radiobut.cpp

@@ -10,9 +10,32 @@
 
 #include "wx/radiobut.h"
 #include "wx/qt/private/converter.h"
+#include "wx/qt/private/winevent.h"
 
 #include <QtWidgets/QRadioButton>
 
+class wxQtRadioButton : public wxQtEventSignalHandler< QRadioButton, wxRadioButton >
+{
+public:
+    wxQtRadioButton( wxWindow *parent, wxRadioButton *handler ) :
+         wxQtEventSignalHandler< QRadioButton, wxRadioButton >(parent, handler)
+
+    {
+        connect(this, &QRadioButton::clicked, this, &wxQtRadioButton::OnClicked);
+    }
+
+    void OnClicked(bool checked)
+    {
+        wxRadioButton* handler = GetHandler();
+        if ( handler == NULL )
+            return;
+
+        wxCommandEvent event(wxEVT_RADIOBUTTON, handler->GetId());
+        event.SetInt(checked ? 1 : 0);
+        EmitEvent(event);
+    }
+};
+
 wxRadioButton::wxRadioButton() :
     m_qtRadioButton(NULL)
 {
@@ -39,7 +62,7 @@ bool wxRadioButton::Create( wxWindow *parent,
              const wxValidator& validator,
              const wxString& name)
 {
-    m_qtRadioButton = new QRadioButton( parent->GetHandle() );
+    m_qtRadioButton = new wxQtRadioButton( parent, this );
     m_qtRadioButton->setText( wxQtConvertString( label ));
 
     return QtCreateControl( parent, id, pos, size, style, validator, name );