detect black screen

[MRXTO09]

in windows 8 the games in windowed mode when you do the screenshot the image is black ho i can detect the black screen? i've found this and i 've tried to change with the screen capture but don't work

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Func _isBlackScreen()
    Local $hImage, $iW, $iH, $tBitmapData, $iStride, $iScan0, $sRet
    Local $hBmp, $hBitmap, $hGraphic, $tCodeBuffer, $bytecode, $tPixelData
    _GDIPlus_Startup()

    $hBitmap = _ScreenCapture_Capture()
        $hImage = _GDIPlus_BitmapCreateFromHBITMAP($hBitmap)
    $iW = _GDIPlus_ImageGetWidth($hImage)
    $iH = _GDIPlus_ImageGetHeight($hImage)

    ;=> Start Work around For XP, GDIPBitmapLockBits() seem to hard crash autoit When using images that are less then 24bpp
    ; If your using Vista or Newer OS then this won't be called or needed.
    ; http://www.autoitscript.com/forum/index.php?showtopic=102626&view=findpost&p=728034
    If StringInStr("WIN_2003,WIN_XP,WIN_2000", @OSVersion) Then
        Local $aRet, $hBmp, $hBitmap, $hGraphic
        $aRet = _GDIPlus_ImageGetPixelFormat($hImage)
        If Int(StringRegExpReplace($aRet[1], "\D+", "")) < 24 Then
            $hBmp = _WinAPI_CreateBitmap($iW, $iH, 1, 32)
            $hBitmap = _GDIPlus_BitmapCreateFromHBITMAP($hBmp)
            _WinAPI_DeleteObject($hBmp)
            $hGraphic = _GDIPlus_ImageGetGraphicsContext($hBitmap)
            _GDIPlus_GraphicsDrawImage($hGraphic, $hImage, 0, 0)
            _GDIPlus_ImageDispose($hImage)
            _GDIPlus_GraphicsDispose($hGraphic)
            $hImage = _GDIPlus_BitmapCloneArea($hBitmap, 0, 0, $iW, $iH, $GDIP_PXF32ARGB)
            _GDIPlus_BitmapDispose($hBitmap)
        EndIf
    EndIf
    ;=> End Work around

    $tBitmapData = _GDIPlus_BitmapLockBits($hImage, 0, 0, $iW, $iH, $GDIP_ILMWRITE, $GDIP_PXF32ARGB)
    $iStride = DllStructGetData($tBitmapData, "stride")
    $iScan0 = DllStructGetData($tBitmapData, "Scan0")
    $tPixelData = DllStructCreate("dword[" & (Abs($iStride * $iH)) & "]", $iScan0)
    $bytecode = "0x8B7424048B4C24088B0638E0750EC1E80838E0750783C604E2EE31C0C3"
    $tCodeBuffer = DllStructCreate("byte[" & StringLen($bytecode) / 2 - 1 & "]") ;alloc some memory
    DllStructSetData($tCodeBuffer, 1, $bytecode) ;write bytecode into struct
    $sRet = DllCall("user32.dll", "ptr", "CallWindowProcW", "ptr", DllStructGetPtr($tCodeBuffer), "ptr", DllStructGetPtr($tPixelData), "int", $iW * $iH, "int", 0, "int", 0);returns eax in ret[0]

    _GDIPlus_BitmapUnlockBits($hImage, $tBitmapData)
    _GDIPlus_ImageDispose($hImage)
    _GDIPlus_Shutdown()
    Return ($sRet[0] = 0)
EndFunc   ;==>_IsImageGrayScale

Edited April 10, 2014 by MRXTO09

[Palestinian]

Please read the Forum Rules, Specially this part:

 

1. Do not ask for help with AutoIt scripts, post links to, or start discussion topics on the following subjects:

....

Launching, automation or script interaction with games or game servers, regardless of the game.

...

 

[Unc3nZureD]

I don't think it's related to games only. Taking screenshots isn't automating any way the game and in my opinion it's not against the rules, but who knows. Moderators will decide

Anyways:

MRXTO09 - I can't really understand what's the question? Do you want to bypass the limitation and make a screenshot even if such software is running? Or you just want to detect if the screenshot failed?(since you told the second, but it doesn't seem to be logical).

[MRXTO09]

I don't think it's related to games only. Taking screenshots isn't automating any way the game and in my opinion it's not against the rules, but who knows. Moderators will decide

Anyways:

MRXTO09 - I can't really understand what's the question? Do you want to bypass the limitation and make a screenshot even if such software is running? Or you just want to detect if the screenshot failed?(since you told the second, but it doesn't seem to be logical).

 

Please read the Forum Rules, Specially this part:

 

you have misunderstood! I wanted to do a program like fraps to take screenshots and if he saw a screenshot black not save it. here as

[Melba23]

MRXTO09,

I wanted to do a program like fraps to take screenshots

Are these screenshots specifically of the game window as a record of its current state?

M23

[MRXTO09]

yes

[Unc3nZureD]

I'm not sure, but you could use this UDF:

'?do=embed' frameborder='0' data-embedContent>>

You can search for black pixels, if there are X amount of the next to each other, than it's possibly a black screenshot.

[Melba23]

MRXTO09,

Then that counts as "game interaction" - thread locked.

M23