Forum

Hi.



I redisplay MDI Child Form,,but getting OutOfMemoryException.

The message is "Error creating window handle".



Add Form1(Rename ParentForm) and Form2(Rename ChildForm).

Add button1 and button2 on the ParentForm.



a part of source code of ParentForm



    public partial class ParentForm : Form

    {

        ChildForm childForm1 = new ChildForm();

        ChildForm childForm2 = new ChildForm();

        public ParentForm()

        {

            InitializeComponent();

            this.IsMdiContainer = true;

            childForm1.MdiParent = this;

            childForm2.MdiParent = this;

            childForm1.Show();

            childForm2.Show();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            childForm1.Show();

        }

        private void button2_Click(object sender, EventArgs e)

        {

            childForm2.Show();

        }

    }



a part of source code of ChildForm



    public partial class ChildForm : Form

    {

        void ChildForm_FormClosing(object sender, FormClosingEventArgs e)

        {

            if (e.Cancel == false)

            {

                e.Cancel = true;

                this.Visible = false;

            }

        }

    }



Run and Close ChildForm1 and ChildForm2.

Push the button2.



Result:

Error was displayed , saying that "Error creating window handle".



Thanks.

Thank you for the bug report. We reproduced it succesfully and will include the fix in the upcoming release.

correction.



Add button1 and button2 on the ParentForm.

->Add button1 and button2 and "ribbon1" on the ParentForm.