>Hugo,
>
>That works, however you as the developer are required to remember to add all of the controls and then add code to your form's Init method to set things up. By having the treeview, toolbar, etc... dynamically add the required imagelist at runtime, then I don't have to do any special coding other that what's already defined in my base class.
>
>Also in a truelly 'object-oriented' approach, each control should behave correctly regardless of what other controls are on the form which is what I was trying to show with my example.

In fact TreeView is already misbehaving by itself, as it requires an imagelist - bad design, IMO. The treeview should have a collection of image filenames which it would pick during its instantiation, and so be completely self-contained, a true self-contained object.

We can only discuss the best patch for this misbehavior, and yours seems about right.