Listview not locking

Hi... I am using the LockWindowUpdate API to lock a listview... however it does not seem to be working. I am locking a Treeview at the same time and it works but not the listview. When I try to lock the listview the LockWindowUpdate function returns 0... Any ideas??? Here's my code minus the API Declaration:

VB Code:

Private Sub Listview_DblClick()
    Dim retval as Long
 
    retval = LockWindowUpdate(TreeView1.Hwnd) 'returns 1
    retval = LockWindowUpdate(ListView1.Hwnd) ' returns 0
End Sub

Thanks....

BestCoder

I did some searching and couldn't find anything specific to a ListView control. Could simple perform a LockWindowUpdate on the entire form? Allegedly, this locks all controls on the form.

Yes you are right... I could do that, at least for a test... I do need to access some of the controls on this form while the Treeview and Listview are locked. I'll let you know the results of the test.

Thanks....

BestCoder

Ok... not sure why this is but it seems that the one that is locked first is the only one that will work. If I lock the treeview first it locks fine and the listview doesn't, but if I lock the Listview first it locks fine and thre treeview doesn't. Know anything about this??

Thanks a mil.

BestCoder

No idea...how about locking one and disabling the other?

yeah that's what I'm doing... strange though.

I know that even in their current iterations these controls have some, how shall I say, "issues", but this is a strange one. I'm going to have a look at MSDN and see what I can see. If I find anything worthy I'll post it.

yeah... I looked in the Platform SDK Documentation but couldn't find anything that gave any reasons for that behavior.

Only one window can be "locked" at a time. Try locking the form. Or put both the controls in a frame and lock the frame.

You can even lock the desktop (use GetDesktopWindow())

just make sure to call LockWindowUpdate(0) to "unlock" whatever is locked.

Actually, I like that Frame idea that agent has. Have you tried that?

Yes that is a good idea. I hadn't thought of that. Thanks for replies agent and hack...

BestCoder

Help R Us...:D

:D