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JAFN

help needed with _GUICtrlListView_DeleteAllItems() failure

7 posts in this topic

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


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#2 ·  Posted (edited)

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

Edited by guinness

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Updated: 04/09/2015

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#3 ·  Posted (edited)

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 by JAFN

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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.


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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.


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
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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.


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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. :unsure:


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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