Move GDI+ image

[Acce]

Hi im trying to make an image move within my gui , this will be part of a slide in menu bar. Here is my current code. My thought is to have a  slide in menu using a GUI on top of my main GUI, good idea or bad one ? 

;Menu GUI
$mGUI = GUICreate("",500, 310,100,200, $WS_POPUP, $WS_EX_LAYERED+$WS_EX_TOOLWINDOW,$hGUI)
GUISetBkColor(0xabcdef)
    _WinAPI_SetLayeredWindowAttributes($mGUI,0xabcdef)
GUISetState(@SW_SHOW)
;Menu GUI <=====
    ;Menu GDI
    
    ;Canvas
    $sGraphic = _GDIPlus_GraphicsCreateFromHWND($mGUI)
    $slide_Bitmap =_GDIPlus_BitmapCreateFromGraphics(384, 216, $sGraphic)
    $slide_Buffer = _GDIPlus_ImageGetGraphicsContext($slide_Bitmap)
    _GDIPlus_GraphicsClear($slide_Buffer)
        ;Load Image
    $TmpImage = _GDIPlus_ImageLoadFromFile(@ScriptDir & "\assets\HUD\" & "slide.png")
    $hBitmap1 = _GDIPlus_ImageResize($TmpImage, 384, 216)
        _GDIPlus_GraphicsClear($slide_Buffer)
    _GDIPlus_ImageDispose($TmpImage)
        ; draw images into back buffer
    for $i = -450 to -300
      _GDIPlus_GraphicsDrawImage($slide_Buffer, $hBitmap1, 0, 0)
      _GDIPlus_GraphicsDrawImageRect($sGraphic, $hBitmap1,$i, 10, 490,210)
      sleep(20)
   Next
;Menu GDI  <=====
EndFunc

I have gotten a few unexpected results , First is that the image dont get resized proper, And im a bit uncertain to how I should remove the old image when I load the new one in the loop ?

 

Any help would be much appreciated 

Edited October 1, 2020 by Acce

[Acce]

After reading the help file I have updated my attempt to this 

 

    ;Load Image
    $hImage_1  = _GDIPlus_ImageLoadFromFile(@ScriptDir & "\assets\HUD\" & "slide.png")
    $hImage_bg  = _GDIPlus_ImageLoadFromFile(@ScriptDir & "\assets\HUD\" & "bg.png")
    
  ;create buffered graphics frame set for smoother gfx object movements
    $g_hGfx = _GDIPlus_GraphicsCreateFromHWND($mGUI) ;create a graphics object from a window handle
    $g_hBitmap = _GDIPlus_BitmapCreateFromGraphics(500, 310, $g_hGfx) ;create a Bitmap object based on a graphics object
    $g_hGfxCtxt = _GDIPlus_ImageGetGraphicsContext($g_hBitmap) ;get the graphics context of the image / bitmap to draw on image / bitmap
    _GDIPlus_GraphicsSetSmoothingMode($g_hGfxCtxt, $GDIP_SMOOTHINGMODE_HIGHQUALITY) ;sets the graphics object rendering quality (antialiasing)
    
    for $i = -400 to -10
          _GDIPlus_GraphicsDrawImage($g_hGfxCtxt, $hImage_1, $i, 0) ; Draw to buffer
    _GDIPlus_GraphicsDrawImage($g_hGfxCtxt, $hImage_bg, $i, 0) ; Draw to buffer
     _GDIPlus_GraphicsDrawImage($g_hGfx, $g_hBitmap, 0, 0) ; draw to GUI
    Next

 

But Just realising now owerwriting the buffer with a blank file probably dosent erase the old image 

[Acce]

Solved 

Here is what I ended with:

Func Sliding_Menu()
;Menu GUI
$mGUI = GUICreate("",500, 310,100,200, $WS_POPUP, $WS_EX_LAYERED+$WS_EX_TOOLWINDOW,$hGUI)
GUISetBkColor(0xabcdef)
    _WinAPI_SetLayeredWindowAttributes($mGUI,0xabcdef)
GUISetState(@SW_SHOW)
;Menu GUI <=====
    ;Menu GDI
        ;Load Image
    $hImage_1  = _GDIPlus_ImageLoadFromFile(@ScriptDir & "\assets\HUD\" & "slide.png")
    $hImage_bg  = _GDIPlus_ImageLoadFromFile(@ScriptDir & "\assets\HUD\" & "bg.png")
      ;create buffered graphics frame set for smoother gfx object movements
    $g_hGfx = _GDIPlus_GraphicsCreateFromHWND($mGUI) ;create a graphics object from a window handle
    $g_hBitmap = _GDIPlus_BitmapCreateFromGraphics(500, 400, $g_hGfx) ;create a Bitmap object based on a graphics object
    $g_hGfxCtxt = _GDIPlus_ImageGetGraphicsContext($g_hBitmap) ;get the graphics context of the image / bitmap to draw on image / bitmap
    _GDIPlus_GraphicsSetSmoothingMode($g_hGfxCtxt, $GDIP_SMOOTHINGMODE_HIGHQUALITY) ;sets the graphics object rendering quality (antialiasing)
    
    ;capture screen
         $mGUI_Pos = WinGetPos($mGUI)
     $x = $mGUI_Pos[0]
     $y = $mGUI_Pos[1]
 $hHBitmap = _ScreenCapture_Capture("",$x,$y,$x + 500, $y + 300)
    $hImageBg  = _GDIPlus_BitmapCreateFromHBITMAP($hHBitmap)
    For $i = -400 to -20 step 2
          _GDIPlus_GraphicsDrawImage($g_hGfxCtxt, $hImageBg, 0, 0) ; Draw to buffer
      _GDIPlus_GraphicsDrawImage($g_hGfxCtxt, $hImage_1, $i, 0) ; Draw to buffer
          _GDIPlus_GraphicsDrawImage($g_hGfx, $g_hBitmap, 0, 0) ; draw to GUI
sleep(5)
Next