ContainerChildren (gb.qt4)
This virtual class returns a virtual collection of all children of a container.
Properties
| Count | Return the number of child controls. | 
| First | Return the first child of the container, or NULLif the container has no children. | 
| Last | Return the last child of the container, or NULLif the container has no children. | 
| Max | Return the number of child controls minus one, i.e. the higher child control index. | 
Methods
| Clear | Delete all children controls of a container. | 
Example
Public Sub Form_Open()
  Dim hChildren As ContainerChildren = FMain.Children
  Dim ob As Object
  Print "FMain has " & Str(hChildren.Count) & " children"
  If hChildren.Count = 0 Then Message.Info("Add some controls (e.g. Button, TextBox etc.) to the FMain form and try again", "OK")
  For Each ob In hChildren
    Print "FMain contains: - " & ob.name
  Next
End
Code adapted from a post by "shell" on the 
https://www.gambas-es.org web site.