Update graphic

[Erik.]

Hi,

I think the solution is easy but i can't find it.

I want to make an graphic that displays data in my array.

That's not the problem at all, the problem now is, i am pushing the array with an new random number.

I would like to update the graphic after the new random integer has been generated.

I can't find out how to do that.

Hope you can help me.

My code:

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#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
#include <Array.au3>

Dim $aArray[500]
#Region ### START Koda GUI section ### Form=
$Form1 = GUICreate("Form1", 615, 438, 247, 136)
$Graphic1 = GUICtrlCreateGraphic(0,0, 500, 500)
GUICtrlSetGraphic(-1,$GUI_GR_LINE,0,250)
GUICtrlSetGraphic(-1,$GUI_GR_LINE,500,250)
GUICtrlSetGraphic(-1,$GUI_GR_MOVE,0,0)
#EndRegion ### END Koda GUI section ###

    $i = 0
While $i < 500
    $aArray[$i] = random(-250,250,1)
    $i = $i + 1
WEnd

While 1
    $nMsg = GUIGetMsg()
    _ArrayPush($aArray,random(-250,250,1),1)

    Drawgraphic()

    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit

    EndSwitch
WEnd

Func Drawgraphic()
    $y = 0
    While $y < 500
        GUICtrlSetGraphic($Graphic1,$GUI_GR_LINE,($y),($aArray[$y]+250))
        $y = $y + 1
    Wend
    GUISetState()
EndFunc

[Erik.]

Simple

$GUI_GR_REFRESH

After adding this my graphic will be updated every loop.

Problem now is, it does not delete the old lines to it will be an black block.

How can i do that?

[UEZ]

It will flicker a lot when using this method!

I would do it in GDI+ with backbuffer method to minimize flickering.

Example:

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#include <Array.au3>
#include <GDIPlus.au3>
Opt("GUIOnEventMode", 1)

_GDIPlus_Startup()

$iW = 615
$iH = 438
$Form1 = GUICreate("Form1", $iW, $iH, 247, 136)
GUISetBkColor(0xFFFFFF, $Form1)
GUISetState()

$hGraphic = _GDIPlus_GraphicsCreateFromHWND($Form1)
$hBitmap = _GDIPlus_BitmapCreateFromGraphics($iW, $iH, $hGraphic)
$hBackbuffer = _GDIPlus_ImageGetGraphicsContext($hBitmap)
 _GDIPlus_GraphicsSetSmoothingMode($hBackbuffer, 2)
 _GDIPlus_GraphicsClear($hBackbuffer, 0xFFFFFFFF)
$hPen = _GDIPlus_PenCreate(0xFF000000, 1)

Dim $aArray[500]
$i = 0
While $i < 500
    $aArray[$i] = random(-250, 250, 1)
    $i = $i + 1
WEnd

GUISetOnEvent(-3, "_Exit")

AdlibRegister("Draw", 100)

While Sleep(10000)
WEnd

Func Draw()
    _GDIPlus_GraphicsClear($hBackbuffer, 0xFFFFFFFF)
    $y = 0
    While $y < 500
        _GDIPlus_GraphicsDrawLine($hBackbuffer, $y, 250, $y, $aArray[$y]+250,$hPen)
        $y = $y + 1
    Wend
    _GDIPlus_GraphicsDrawImage($hGraphic, $hBitmap, 0, 0)
    _ArrayPush($aArray,random(-250,250,1),1)
EndFunc

Func _Exit()
    AdlibUnRegister("Draw")
    _GDIPlus_PenDispose($hPen)
    _GDIPlus_GraphicsDispose($hBackbuffer)
    _GDIPlus_BitmapDispose ($hBitmap)
    _GDIPlus_GraphicsDispose($hGraphic)
    _GDIPlus_Shutdown()
    GUIDelete($Form1)
    Exit
EndFunc

Br,

UEZ

[Erik.]

Wow, that is very nice!!

I was looking for that.