Question

Ive got a panel and im drawing a heart on that panel..
But i dont want to draw the heart i want to draw everything except the heart so the heart is transparent.
Can i invert the Region selected out of the Path?

System.Drawing.Drawing2D.GraphicsPath path = new System.Drawing.Drawing2D.GraphicsPath();
            path.AddArc(0, 0, (this.Width / 2), (this.Height / 2), 135, 195);
            path.AddArc((this.Width / 2), 0, (this.Width / 2), (this.Height / 2), 210, 195);
            path.AddLine((this.Width / 2), this.Height, (this.Width / 2), this.Height);
            this.Region = new Region(path);
            this.BackColor = Color.Black;

What it looks like(white = transparent):

What i want it to look like(white = transparent):

Answer 1

I think you can just add 2 graphics paths together.

You could try this code out:

private void panel1_Paint(object sender, PaintEventArgs e)
{
    GraphicsPath path = new GraphicsPath();
    path.AddArc(0, 0, (this.Width / 2), (this.Height / 2), 135, 195);
    path.AddArc((this.Width / 2), 0, (this.Width / 2), (this.Height / 2), 210, 195);
    path.AddLine((this.Width / 2), this.Height, (this.Width / 2), this.Height);

    GraphicsPath path2 = new GraphicsPath();
    path2.AddRectangle(new Rectangle(new Point(0, 0), panel1.Size));

    path2.AddPath(path, false);

    e.Graphics.FillPath(Brushes.Black, path2);
}

Result is: