[SOLVED] mdi child form wont center to another mdi child form within the same parrent?

mdi child form wont center to another mdi child form within the same parrent?

Hi I have a mdi child form (form A) which when clicked displays another mdi child formn(form B) both of which share the same parent form. The problem is I cant find a way to center the child form B to child form A? Is this even allowed in vb.net? I can however display form B (as a non mdi child) centered to form A (as a mdi child form) which is strange. an though this could work this issue now is that the forms boarder within Windows 8 at least, is visually totally different to a mdi form in windows 8 making the whole thing look un-uniformed and messy?

Solution

Here's one way to accomplish it:

Public Class MdiChildA

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim childB As New MdiChildB
        childB.MdiParent = Me.MdiParent
        AddHandler childB.Load, AddressOf child_Load
        childB.Show()
    End Sub

    Private Sub child_Load(sender As Object, e As EventArgs)
        Dim otherChild As Form = DirectCast(sender, Form)
        otherChild.StartPosition = FormStartPosition.Manual
        otherChild.Location = New Point((Me.Location.X + Me.Size.Width / 2) - otherChild.Size.Width / 2,
                                        (Me.Location.Y + Me.Size.Height / 2) - otherChild.Size.Height / 2)
    End Sub

End Class