However, if I resize the form even a little (so that the PictureBox within is resized as well), then the contents get redrawn and stay visible.<BR><BR>Does anyone have an idea what might be going ...

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 ...