I a themed link menu that opens MDI children on the main form.  Inside a child form I can see a ParentForm reference to the frmMainForm but I can't see a reference to the ThemedLinkMenu ( tlmAction ) so I can set it as enabled = false.

The request from the client is to not allow opening another form while the current form is editing and this seemed the most straightforward way to accomplish this though I'm open to other suggestions. 

I planed to see the tlmAction.Enbled = false in my EditStateChanged of each form.

Tried a public property in frmMainForm which was a reference to the TLM

        public MicroFour.StrataFrame.UI.Windows.Forms.ThemedLinkMenu tlm { get; set; }
(then inside constructor ) 

       tlm = this.tlmAction ;

But I see no ref to this property when looking at ParentForm inside my other forms.

Thought about trying to cancel in the leave of the form but can't find anything in the args to do that.  Suggestions for a form-event approach?

either disabling the TLM or preventing leaving the form until there is an undo or save would work for me.

Seems there is a more elegant way to accomplish this but I can't wrap my head around it.  

Thanks in advance