Custom Panel Paint Event Won't Work C#

[tranc3d]

Hello,

I have a custom panel in my project (this one: http://www.codeproject.com/KB/graphi...gedrawing.aspx) with a custom paint event ( protected override void OnPaint(PaintEventArgs pe) ). You set an image to the Image property of the custom panel, and it scrolls very smoothly through that image according to the value of the scrollbars, in an optimised way in the above OnPaint function.

Through the designer, i dropped this custom panel on project form and assigned a saved image from disk to it, through the Image Property. The image is scrolled very smoothly, everything works as i expect.

On top of that image i want to draw some rectangles and polygons (some selection zones in that image). Through the designer i added public void picturePanel1_Paint(object sender, PaintEventArgs e) event handler in which i draw these rectangles and polygons. This function (event handler) never gets called. Why? What do i have to do to make it work?

[Plater]

I can't say for sure, but I *think* its because the override function never calls base.paint() ?

EDIT: although from my testing, I saw no performance issues between a regular scrolling form with picturebox then with that custom control

[tranc3d]

Thank you, that was the problem. This forum is amazing :)