help needed with _GUICtrlListView_DeleteAllItems() failure

[JAFN 0]

Assuming a valid control id what could cause _GUICtrlListView_DeleteAllItems() to return false?

[guinness 1,478]

You need the ControlHandle of the ControlID. >> GUICtrlGetHandle() in the Help File.

Edited April 30, 2011 by guinness

[JAFN 0]

You need the ControlHandle of the ControlID. >> GUICtrlGetHandle() in the Help File.

The help file says controller ID or handle, But I will give it try anyway.

Thanks.

Edited April 30, 2011 by JAFN

[JAFN 0]

You need the ControlHandle of the ControlID. >> GUICtrlGetHandle() in the Help File.

Despite the help file saying that you can use either the control id makes it error out but the handle works just fine.

Thank you.

[BrewManNH 1,143]

Actually, you can use the control ID as well, but it's about 10 times slower deleting the LV contents using the CID over the handle. Very noticable when you have a lot of items in the listview.

[JAFN 0]

Actually, you can use the control ID as well, but it's about 10 times slower deleting the LV contents using the CID over the handle. Very noticable when you have a lot of items in the listview.

So I should use the handle wherever possible.

And to think I had just the opposite inclination.

Thanks.

[BrewManNH 1,143]

If you use the CID it will delete the items in your listview one line at a time using GUICtrlDelete, it will run through a loop to do this. If you use a handle, it will send the listview control a message that deletes all the lines. So, if you have a lot of lines in your listview, you can see why it takes a while.