private void EllipseBtn_Click(object sender, EventArgs e) { currentShape = Shapes.Ellipse; }
private void RectBtn_Click(object sender, EventArgs e) { currentShape = Shapes.Rectangle; }
private void TrianBtn_Click(object sender, EventArgs e) { currentShape = Shapes.Triangle; }
private void LineBtn_Click(object sender, EventArgs e) { currentShape = Shapes.Line; }