preventing expansion of treeview item 1

[DoctorC]

I want to prevent users from expanding a treeview item within a dialog unless they enter a password. I know treeview controls send an ON_NOTIFY message to the parent window (in this case a dialog), but I haven't been able to figure out how to prevent that message from being handled. I tried the TVN_ITEMEXPANDING message, but apparently this is too late...it goes ahead and expands after politely handling my OnItemExpanding() function. Any ideas how I can interfere when the user clicks to expand an item? [sig][/sig]

 

[DoctorC]

Whoops, I meant to put this in the Visual C++ forum [sig][/sig]

 

[wanghongtai]

I know not. [sig][/sig]

 

[Cagliostro]

Yoo can handle the message WM_NCHITTEST. It is the first message on moving, clicking, draging...
A good idea is to use the handler
OnNcHitTest( point );