Not automatically, but when you execute SendMessage.

Mike Saltzman"]Of course, if you are using a MessageFilter, you could just scroll the WinTree in code without sending a message.

Is this possible, i mean without having focus?

In my example i have used in .NET tree and the ultratree, the .NET tree responds at SendMessage when there isnt focus, but the ultratree doesnt.

KevinKlein said:

this is working with the .net treeview.

Which part of this works with the MS Tree? You mean it works automatically? Or it works when you use the SendMessage?

I can see how SendMessage might work, since the DotNet TreeView class is a wrapper for the Windows Tree. But UltraTree is not and therefore would not work the same way. Of course, if you are using a MessageFilter, you could just scroll the WinTree in code without sending a message.

Yeah, i thought to do that to. I also tried to implemented the imessagefilter and did a sendmessage whenever the mousescroll is used within the ultratree without having focus. Btw this is working with the .net treeview.

Hi Kevin,

I don't think this has anything to do with the tree. The mouse driver sends the MouseWheel messages to whatever control has the input focus, not necessarily the control that the mouse is currently over. So I don't beleive that what you want to do there is possible, unless maybe you set focus to the tree in the tree's MouseEnter event - which is probably not a good idea.

Thanks for the quick answer.

I am sorry, this is not what i meant.
I am looking for a solution for this situation.

Lets say you have an ultratree at your left side and a tabpage for example on the right side. when the ultratree have focus i can scroll with the mousebutton, logical. But when the tabpage is focused i want that when the mousecursor is in the region of the ultratree i can use the scrollbutton of the mouse to scroll the tree.

thanks.