- if (param == CBN_SELCHANGE)
- {
- wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId);
- event.SetInt(GetSelection());
- event.SetEventObject(this);
- event.SetString(GetStringSelection());
- ProcessCommand(event);
-
- return TRUE;
- }
- else if (param == CBN_EDITCHANGE)
- {
- wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
- event.SetString(GetValue());
- event.SetEventObject(this);
- ProcessCommand(event);
+ switch ( param )
+ {
+ case CBN_SELCHANGE:
+ if (GetSelection() > -1)
+ {
+ wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId());
+ event.SetInt(GetSelection());
+ event.SetEventObject(this);
+ event.SetString(GetStringSelection());
+ ProcessCommand(event);
+ }
+ break;
+
+ case CBN_EDITCHANGE:
+ {
+ wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
+ event.SetString(GetValue());
+ event.SetEventObject(this);
+ ProcessCommand(event);
+ }
+ break;
+ }