Gtk3: fixed TListBox.MultiSelect. issue #36971

git-svn-id: trunk@63090 -

lcl/interfaces/gtk3/gtk3wsstdctrls.pp

@@ -394,6 +394,7 @@ var
 begin
   AListBox := TGtk3ListBox.Create(AWinControl, AParams);
   AListBox.BorderStyle := TCustomListBox(AWinControl).BorderStyle;
+  AListBox.MultiSelect := TCustomListBox(AWinControl).MultiSelect;
   Result := TLCLIntfHandle(AListBox);
 end;