Flicker in MSChart and List view

[Jfuerst]

I have a program that was originally written in VB6. It contains several graphing windows that utilize MSChart along with some list view windows.

As we all know both of these controls "Flicker" when they update.

Does anyone know of a solution for either, or both, of these controls to make the update draw smoothly without flickering?

A replacement OCX or something would be okay as well.

Thanks in advance,

Jordan

[DinoVaught]

I would suggest using the LockWindowUpdate API.

Option Explicit

Private Declare Function LockWindowUpdate Lib "user32" (ByVal hwndLock As Long) As Long

Private Sub Command1_Click()
Dim iCount As Integer


    LockWindowUpdate Me.List1.hWnd ' Pass the handle of the control to Lock
                                ' this will prevent the contorl from being updated
                                ' thus, removing the flicker
    Do Until iCount = 10000
        Me.List1.AddItem Format$(iCount)
        iCount = iCount + 1
    Loop
    LockWindowUpdate 0 ' Un lock the control

End Sub

[hendramin]

recently, i was using list view and tree view, they are so slow when handling huge data. this is happened because everytime we update the list, redraw method is fired and this is time-consuming. i try to set visible to FALSE before batch update and set it back to TRUE after the update process has completed and the result is quiet good.


Happy Coding