Problem:

If you have a project with for example 3 forms in it:-

1)       frmMain

2)       frmFirst

3)       frmSecond

When you run the project it loads frmMain which have the property IsMdiContainer set to true.

frmFirst is running as a child of frmMain.

From a button on frmFirst how can I start off frmSecond and have that as a Child of frmMain in the MDIContainer.

Resolution:

You can use code such as:-

set ls-frmSecond to cfrmSecond::"New"()

set ls-frmSecond::"MdiParent" to self::"MdiParent"

invoke ls-frmSecond::"Show"()

to do this. You set the parent to the parent of the current form which in this case is frmFirst.