mdi child form don't work via opengl app in .NET

This is my first question. I start to computer graphics programming with opengl via Tao Framework.

Everything going well but today I tried to work with MDI forms. My application crashed. It is a bit difficult to describe my problem. So 开发者_如何学CI captured 5 images and I added my questions on them. I could not add this images because of my reputation. This is my homepage link. Thank you.

Please read all details

http://www.emrekiyak.com/tao.html

I believe you are setting the MyParentForm property as the form itself, which creates a circular reference.

You could parametrize the child form Constructor to carry a reference to the parent, which will allow you to properly set it.

public ChildForm(Form parentForm)
{
    //Other code
    MdiParent = parentForm;
    Show();
}

No need to keep it as a property elsewhere.