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JohnOne

Listview flicker when in tab item

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Then up to now, the simplest and fastest is.

Locking the GUI in tandem with using _GUICtrlListView_BeginUpdate and _GUICtrlListView_EndUpdate.

Func PopulateLV()
    Local $hTimer = TimerInit()
    _GUICtrlListView_BeginUpdate ($hLV)
    GUISetState(@SW_LOCK)
    For $i = 0 To 1000
        GUICtrlCreateListViewItem($sLVI, $hLV)
    Next
    GUISetState(@SW_UNLOCK)
    _GUICtrlListView_EndUpdate( $hLV)
    MsgBox(0, "Time Difference", TimerDiff($hTimer) / 1000)
EndFunc   ;==>PopulateLV

EDIT:

Adding the update function halves the timer at least.

Edited by JohnOne

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Interesting as it may accelerate in the case of not using the TAB.
I have not tried yet but can not wait until I do the test on several of my programs.

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Wonder if anyone knows why this does not work?

Func PopulateLV()
    Local $hTimer = TimerInit()
    _GUICtrlListView_BeginUpdate($hLV)
    ;GUISetState(@SW_LOCK)
    $hwnh = _WinAPI_GetDlgItem($Gui, $hLV) ; Get handle of ListView
    _WinAPI_LockWindowUpdate($hwnh) ; Lock ListView 
    For $i = 0 To 1000
        GUICtrlCreateListViewItem($sLVI, $hLV)
    Next
    _WinAPI_LockWindowUpdate(Null)
    ;GUISetState(@SW_UNLOCK)
    _GUICtrlListView_EndUpdate($hLV)
    MsgBox(0, "Time Difference", TimerDiff($hTimer))
EndFunc   ;==>PopulateLV

Just passing the handle of listview instead of parent gui.

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I'm wondering now if _WinAPI_LockWindowUpdate and GUISetState(@SW_LOCK) are actually the same thing.

 

I started using the API version in general because it works reliably for all windows (especially useful for hiding the ugly "send" machinations applied to 3rd-party programmes), and (with the additions of regional invalidation) allows a more granular control over what's happening.  Also, whenever I use the API I'm learning something - using native commands is more for "general" use.  90% of the UDF's such as  _GUICtrlListView_BeginUpdate are really just wrappers for direct API calls anyway, so it's useful to dig through them and learn "how" they do what they do - which things like GUISetState hide for the sake of simplicity.

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_WinAPI_LockWindowUpdate wants the handle from GuiCreate not the control

 

I'm not sure that is entirely true, as far as windows OS is concerned, all "controls" are just child windows.

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Found another way to make it even quicker 90% of the time, maybe it's skipping an API call.

Func PopulateLV()
    Local $hTimer = TimerInit()
    _GUICtrlListView_BeginUpdate($hLV)
    _SendMessage($Gui, $WM_SETREDRAW, False)
    For $i = 0 To 1000
        GUICtrlCreateListViewItem($sLVI, $hLV)
    Next
    _SendMessage($Gui, $WM_SETREDRAW, True)
    _GUICtrlListView_EndUpdate($hLV)
    MsgBox(0, "Time Difference", TimerDiff($hTimer))
EndFunc   ;==>PopulateLV

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I'm not sure that is entirely true, as far as windows OS is concerned, all "controls" are just child windows.

 

You're right, have'nt used the function enough (or at all) to test...


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indeed faster


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Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind. 

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My contribution to others projects or UDF based on  others projects: * _sql.au3 UDF  * POP3.au3 UDF *  RTF Printer - UDF * XML.au3 UDF * ADO.au3 UDF SMTP Mailer UDF * Dual Monitor resolution detection * * 2GUI on Dual Monitor System * _SciLexer.au3 UDF *

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Good coding practices in AutoIt * 

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * IE in TaskScheduler

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

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Signature last update: 2018-10-31

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