PictureBox and repaint event

[user]

Hello
i have PictureBox p1:
p1.Paint += new PaintEventHandler(MyFunction);
....
public void MyFunction(Object Sender, PaintEventArgs e)

and it works fine but: when i call:
p1.Refresh();

MyFunction() ADDS everything to my picture, and i want to
repaint it from the begining. How can i do it ?

Thanx
Michal

 

[Guest]

If you want to actually modify the the image using the gdi try this

Bitmap b = Bitmap.FromFile(somepath)
Graphics g = Graphics.FromBitmap(b)
Then if you paint using the graphics object you actually paint to the bitmap which you can the attach to the image property of the picture box

If you want further info check out this awesome FAQ:

(watch the line wrap

http://www.dotnet247.com/247reference/a.aspx?u=http://www.bobpowell.net/gdiplus_faq.htm

 

[Ed Courtenay]

I'm not 100% certain, but I think you want to use the Invalidate() method of
your PictureBox.