how to make controls visible on formview?

I am using opengl to render and i have an SDI formview with some controls. Whenever i key in values into controls or use buttons to redraw the image, my controls will disappear after that, how to make them remain visible thru out?

it sounds like you are not keeping your controls visible after you call paint() or similar function. it would help more if you could specify the compiler/platform you are using.