Listview not locking

[BestCoder]

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:

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

Thanks....

BestCoder

[Hack]

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.

[BestCoder]

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

[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

[Hack]

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

[BestCoder]

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

[Hack]

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.

[BestCoder]

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

[agent]

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.

[Hack]

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

[BestCoder]

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

BestCoder

[Hack]

Help R Us...

[BestCoder]