Reverted resource references for combine_something, you can't use tool_image here, because on MSW that only works for .bmps'

Added dependency stuff to invalidate Choice images;
Fixed 'duplicate' in symbol editor

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@197 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gui/welcome_window.cpp

@@ -78,6 +78,7 @@ void WelcomeWindow::draw(DC& dc) {
 void WelcomeWindow::onOpenSet(wxCommandEvent&) {
 	wxFileDialog dlg(this, _TITLE_("open set"), wxEmptyString, wxEmptyString, import_formats(), wxOPEN);
 	if (dlg.ShowModal() == wxID_OK) {
+		wxBusyCursor wait;
 		close(import_set(dlg.GetPath()));
 	}
 }
@@ -95,6 +96,7 @@ shared_ptr<T> open_package(const String& filename) {
 }
 
 void WelcomeWindow::onOpenLast(wxCommandEvent&) {
+	wxBusyCursor wait;
 	assert(!settings.recent_sets.empty());
 	close( open_package<Set>(settings.recent_sets.front()) );
 }