The Windows Forms <xref:System.Windows.Forms.PictureBox> control is used to display graphics in bitmap, GIF, JPEG, metafile, or icon format.

As soon as Ink is set, my custom PictureBox control updates itself correctly via my OnPaint method, but the lines I've drawn are only visible for a split second, and then it somehow clears itself ...

I'm trying to implement a flicker-free graph control in C#.Here's a rather cut-down version:public class Graph : System.Windows.Forms.PictureBox{ private Graphics graphDC; private Graphics ...