- if (wxMessageBox(wxString::Format("Are you sure you want to delete the event %s from the %s calendar?", eventDeleteData.entryName, calendarDeleteData.calendarName), "Delete event", wxYES_NO|wxICON_QUESTION) == wxNO){
+ if (wxMessageBox(wxString::Format("Are you sure you want to delete the event %s from the %s calendar?", wxString(eventDeleteData.entryName.c_str(), wxConvUTF8), wxString(calendarDeleteData.calendarName.c_str(), wxConvUTF8)), "Delete event", wxYES_NO|wxICON_QUESTION) == wxNO){