void Frame::OnNewCourse(wxCommandEvent&){
CourseCreator cc(this, panel_overview->getCourses());
while (cc.ShowModal() == wxID_OK){
std::vector<wxString> data = cc.getData();
int ret = panel_overview->addNewCourse(data);
if(ret >= 0){
SetStatusText(wxString("Succesfully added new course") << ret);
return;
}
else if(ret == -1){
cc.DisplayError(ERROR_COURSE_ALREADY_EXISTS);
}
}
SetStatusText("");
}//OnNewCourse
