Drag and drop to specific item in tree?

[adonisv]

I'm trying to implement the ability to drag and drop a file onto a tree control, BUT it would be great if you could only drag onto certain objects. Is there a way to allow the user to drag a file onto the tree control and depending on what type of object the user drags the file over, drag and drop is allowed or disallowed? :~ It would be flimsy for them to have to select a tree item then drag and drop, much nicer if you simply drag the file to the object you want to add it to and if its allowed, it works! :-D

[Michael Dunn]

When your IDropTarget::DragOver() method is called, you get a POINTL holding the cursor location. Convert that from screen coords to client coords (relative to the tree) then use TVM_HITTEST to find out which tree item that point is over. Once you get that, you can decide whether to allow the drop over that item. Return DROPEFFECT_NONE to not allow it, or DROPEFFECT_MOVE/COPY to allow it. --Mike-- Ericahist | CP SearchBar v2.0.2 | Homepage | RightClick-Encrypt | 1ClickPicGrabber "Just because the box has 2 gigabytes of memory doesn't mean you get to use it all!"   -- Rico Mariani, CLR perf guy

[adonisv]

That's awesome thanks. :-D