private void menuSprite_Rotate_180_Click(object sender, EventArgs e) { Spriteset ss = ActiveSpriteset(); Sprite s = ActiveSprite(); if (s == null) { return; } if (!s.IsEmpty()) { if (ss.RotateSelectedSprite(Sprite.RotateDirection.Clockwise180)) { s.RecordUndoAction("rotate180", ActiveUndo()); HandleSpriteDataChanged(ss); } } }