private void GL_ControlModern1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Delete)
{
//delete all selected objects if possible
//the deletion is handled by the scene and it's objects
scene.DeleteSelected();
gL_Control.Refresh();
sceneListView1.UpdateAutoScrollHeight();
Scene_SelectionChanged(this, null);
}
}