The window is about to open. Use this event to initialize a control.
Opening()Parameters
Remarks
me.AddControl TextArea1,true // True since TextArea1 is above our splitter
me.AddControl TextArea2,false // False since TextArea2 is bellow our splitter
me.AddControl ListBox1,false // False since ListBox1 is bellow our splitter
me.AddControl WindowSplitter2,false // False since WindowSplitter2 is bellow our splitter