Hi there,

we are building a front office application that makes use of a
treeview.

The user clicks on a node of the treeview. We then activate the corresponding class and load it with data.

Problem is that after a certain amount of switching between these classes, it appears that some of the classes seem to be in-active. With other words, it is not possible to click on items of a listbox.

I tried all kinds of things, nothing helped so far.

Could somebody help me with this?

Many thanks,

Erwin