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Hide/Delete control box of MDI Child in VB.Net

Posted on 2013-01-08
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Last Modified: 2013-01-23
I have a project in vb.net with 2 forms.  One is a Parent MDI form with one child MDI form.  I am able to open the child form within the parent form however the control box of the child is showing as you can see on the attached document.  I need for my child not to have that and just share the MDI parent control box.  Is this possible?
MDI-Child-ControlBox.doc
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Question by:mhopeman
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Expert Comment

by:CodeCruiser
ID: 38756198
Just set child form's ControlBox property to false either programmatically when showing or at design time.


http://msdn.microsoft.com/en-us/library/system.windows.forms.form.controlbox.aspx
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Mike Tomlinson earned 200 total points
ID: 38756373
You don't really need the MDI model then...

Another approach is to display your "child" form directly within the main one as a borderless form with either Dock set to Fill, or WindowState to Maximized.  You must first set the TopLevel() property of the child form to False, however:

    Dim child As New frmChild
    child.TopLevel = False
    child.FormBorderStyle = FormBorderStyle.None
    child.Dock = DockStyle.Fill
    Me.Controls.Add(child)
    child.Show()

The child can be displayed in a different container, such as a Panel, by replacing "Me" with the appropriate name, like "Panel1".
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Author Closing Comment

by:mhopeman
ID: 38811522
This works but I was looking for another answer without having to display in a panel on another object.
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LVL 85

Expert Comment

by:Mike Tomlinson
ID: 38811612
It doesn't have to be in a Panel.

In my example, the child form is being contained directly by the main form itself:

        Me.Controls.Add(child)

The "Me" is the Main Form.
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