Hello Xojo Developers,

this is my first post here.
I found out an interesting behavior of the Container Control that I would like to share with you.

As you all probably know it is not possible to inherit from a Container Control once you've put controls to it in the design editor.
I always found this annoying when you want to reuse the container control and only rearrange the controls you have added to it.

Now I have found a nice workaround:

Define the container control as a class and add the controls as properties.
You can code all the logic in this class. Event handling is a bit tedious though, as you have to use addHandler.

Now you can add a container control to the project which inherits from your class and and place a control for every control property.

In the constructor of the new container you assign the controls from the layout to the control properties:

parentTextfield = layoutTextfield
parentButton = layoutButton

Now you can reuse the container with different layouts or add additional controls and functionality.

Greetings from Germany
Martin

Dear Eli Ott,

thank you for your answer but you missed the point.
I mean something like this:

Protected Class CCParent Inherits Containercontrol
Sub doSomething()
  MsgBox txtParent.Text
End Sub

Protected txtParent As TextField
End Class

Sub doSomething()
  MsgBox txtParent.Text
End Sub
End Class

Now put in a Containercontrol in design mode and inherit from CCParent

Sub constructor()
  txtParent = txtChild //assign reference from actual control to inherited textfield property 
End Sub

Sub Action()  //push button added in design mode
  doSomething
End Sub

That's just what I was looking for to ease the pain of accommodating multiple mobile device screen sizes and orientations with a web app. I'd had the same idea but gave up when the IDE did not offer WebContainer as a possible superclass to my logic-performing object, and did not offer my logic-performing object class (subclassed from WebContainer) as a super for the UI WebContainer. Turns out if you just type them in it works, yay!