Question

I’m attempting to draw things on a form through a class. Here is the code.

public static void DrawStatBars()
    {
        Graphics g = Graphics.FromImage(Graphic.StatBarBackbuffer);
        Font fnt = new Font("Microsoft Sans Serif", 8, FontStyle.Bold);
        g.DrawImage(Graphic.EmptyHPBar, new Point(12, 12));
        g.DrawImage(Graphic.EmptyManaBar, new Point(12, 35));
        g.DrawImage(Graphic.EmptyEXPBar, new Point(12, 58));
        g.DrawImage(Graphic.HPBar, new Rectangle(12, 15, (int)picHpWidth, Graphic.HPBar.Height), new Rectangle(0, 0, (int)picHpWidth, Graphic.HPBar.Height), GraphicsUnit.Pixel);
        g.DrawImage(Graphic.ManaBar, new Rectangle(12, 38, (int)picManaWidth, Graphic.ManaBar.Height), new Rectangle(0, 0, (int)picManaWidth, Graphic.ManaBar.Height), GraphicsUnit.Pixel);
        g.DrawImage(Graphic.EXPBar, new Rectangle(12, 61, (int)picEXPWidth, Graphic.EXPBar.Height), new Rectangle(0, 0, (int)picEXPWidth, Graphic.EXPBar.Height), GraphicsUnit.Pixel);
        g.DrawString(lblHPText, fnt, new SolidBrush(Color.Black), 40, 15);
        g.DrawString(lblManaText, fnt, new SolidBrush(Color.Black), 40, 38);
        g.DrawString(lblEXPText, fnt, new SolidBrush(Color.Black), 40, 63);
        g.Dispose();


        g = frmMainGame.picGeneral.CreateGraphics;
        g.DrawImage(Graphic.StatBarBackbuffer, new Point(0, 0));
        g.Dispose();
    }

The problem is g = frmMainGame.picGeneral.CreateGrpahics;. Since the control is not static how would I go about accessing it through a class instead of moving the code and having to re-code it to be in the code for the form itself.

Answer 1

You could add an event to handle your PictureBox.Paint method

private void picGeneral_Paint(object sender, PaintEventArgs e)
{
    // Use e.Graphics to do your drawing!
    e.Graphics.DrawStatsBars();
}

Turn your method into an extension method

public static class GraphicsExtensions
{
    public static void DrawStatsBars(this Graphics g)
    {
        // Your code
    }
}