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ioripalm

How to capture the hidden program window?

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How to capture the hidden program window?
For example:

#include <ScreenCapture.au3>
$runPID = Run ("C:\OK.exe", "C:\",@SW_HIDE)
$runPID = WinGetHandleFromPID($runPID) 
$hBmp = _ScreenCapture_CaptureWnd ("C:\OK.jpg", $runPID)

Func WinGetHandleFromPID($iSearchPID, $tolerance = 2000)
    Sleep($tolerance); give the Window a chance to load
    Local $aList = WinList()
    For $i = 1 To $aList[0][0]
        If WinGetProcess($aList[$i][1]) = $iSearchPID Then Return $aList[$i][1]
    Next
    Return SetError(1, 0, False)
EndFunc   ;==>WinGetHandleFromPID

Unable to capture the hidden window, ask how to solve? You can be given code?

Thank you Very Much!!!!!

Edited by ioripalm

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Welcome to Autoit and the forum!
Did you read the help file for _ScreenCapture_CaptureWnd? The second parameter is a handle to the window to be captured not a process ID.


My UDFs and Tutorials:

Spoiler

UDFs:
Active Directory (NEW 2019-08-19 - Version 1.4.13.0) - Download - General Help & Support - Example Scripts - Wiki
OutlookEX (NEW 2019-07-24 - Version 1.3.6.0) - Download - General Help & Support - Example Scripts - Wiki
Outlook Tools (NEW 2019-07-22 - Version 0.6.0.0) - Download - General Help & Support - Wiki
ExcelChart (2017-07-21 - Version 0.4.0.1) - Download - General Help & Support - Example Scripts
PowerPoint (2017-06-06 - Version 0.0.5.0) - Download - General Help & Support
Excel - Example Scripts - Wiki
Word - Wiki
Taks Scheduler (NEW 2019-10-09 - Version 0.9.0.0) - Download - General Help & Support - Wiki

Tutorials:
ADO - Wiki

 

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I tried this

#include <ScreenCapture.au3>

Local $iPID = Run("notepad.exe", "", @SW_HIDE)
Local $hWnd = WinGetHandleFromPID($iPID)
If IsHWnd($hWnd) Then
    _ScreenCapture_CaptureWnd(@ScriptDir & "\OK.jpg", $hWnd)
    ShellExecute(@ScriptDir & "\OK.jpg")
    ConsoleWrite("Success" & @CR)
Else
    ConsoleWrite("Error" & @CR)
EndIf
ProcessClose($iPID)
Exit

Func WinGetHandleFromPID($iSearchPID, $tolerance = 2000)
    Sleep($tolerance); give the Window a chance to load
    Local $aList = WinList()
    For $i = 1 To $aList[0][0]
        If WinGetProcess($aList[$i][1]) = $iSearchPID Then Return $aList[$i][1]
    Next
    Return SetError(1, 0, False)
EndFunc   ;==>WinGetHandleFromPID

It works fine without the @SW_HIDE, saves a screenshot of the Notepad window.

with the @SW_HIDE, it just saves a screenshot of the area of the desktop where Notepad window would be

I looked inside the <ScreenCapture> Include, and it looks to me like _ScreenCapture_CaptureWnd isn't designed for non-visible windows.

It basically just gets the location and size of the window, and then calls _ScreenCapture_Capture to capture an image of that area of the screen.

 

Edited by guestscripter

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I think the name of the function says it all: It captures what is on the screen. If you can't see it it can't be captured.


My UDFs and Tutorials:

Spoiler

UDFs:
Active Directory (NEW 2019-08-19 - Version 1.4.13.0) - Download - General Help & Support - Example Scripts - Wiki
OutlookEX (NEW 2019-07-24 - Version 1.3.6.0) - Download - General Help & Support - Example Scripts - Wiki
Outlook Tools (NEW 2019-07-22 - Version 0.6.0.0) - Download - General Help & Support - Wiki
ExcelChart (2017-07-21 - Version 0.4.0.1) - Download - General Help & Support - Example Scripts
PowerPoint (2017-06-06 - Version 0.0.5.0) - Download - General Help & Support
Excel - Example Scripts - Wiki
Word - Wiki
Taks Scheduler (NEW 2019-10-09 - Version 0.9.0.0) - Download - General Help & Support - Wiki

Tutorials:
ADO - Wiki

 

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Agreed. And ScreenCapture is great as it is, top of the hat and all.

Though then maybe there exists a different/better function someone has created for capturing windows without showing them to the user?

 

One workaround that came to mind with ScreenCapture:

WinSetState($hWnd, "", @SW_SHOW)
    _ScreenCapture_CaptureWnd(@ScriptDir & "\OK.jpg", $hWnd)
    WinSetState($hWnd, "", @SW_HIDE)

Which then just briefly has the Window appear.

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Why capture a hidden window at all? Is it for debugging reasons?
If yes, there could be other ways to debug the script.


My UDFs and Tutorials:

Spoiler

UDFs:
Active Directory (NEW 2019-08-19 - Version 1.4.13.0) - Download - General Help & Support - Example Scripts - Wiki
OutlookEX (NEW 2019-07-24 - Version 1.3.6.0) - Download - General Help & Support - Example Scripts - Wiki
Outlook Tools (NEW 2019-07-22 - Version 0.6.0.0) - Download - General Help & Support - Wiki
ExcelChart (2017-07-21 - Version 0.4.0.1) - Download - General Help & Support - Example Scripts
PowerPoint (2017-06-06 - Version 0.0.5.0) - Download - General Help & Support
Excel - Example Scripts - Wiki
Word - Wiki
Taks Scheduler (NEW 2019-10-09 - Version 0.9.0.0) - Download - General Help & Support - Wiki

Tutorials:
ADO - Wiki

 

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Why capture a hidden window at all? Is it for debugging reasons?
If yes, there could be other ways to debug the script.

Fair question...

How about to capture the state of a "control" that cannot be accessed with something like WinGetText

I suppose IUIAutomation may be the direction to go...

 

Edit: better example of use maybe: Capturing Internet Explorer's rendering of a web page to an image file in the background

Edited by guestscripter

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Why capture a hidden window at all? Is it for debugging reasons?
If yes, there could be other ways to debug the script.

Maybe I do not know the expression, how to get to a hidden window screenshot, of course _ScreenCapture_CaptureWnd can not do, I ask how can we get to a hidden window screenshot?

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Welcome to Autoit and the forum!
Did you read the help file for _ScreenCapture_CaptureWnd? The second parameter is a handle to the window to be captured not a process ID.

I modified the code, if _ScreenCapture_CaptureWnd can not achieve their goals, how to do the job it?

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I do not know if the job of capturing a hidden window can be done at all.
I wanted to know why you need to capture a hidden window? What is it for?
Maybe there are other ways to achieve what you want to do.


My UDFs and Tutorials:

Spoiler

UDFs:
Active Directory (NEW 2019-08-19 - Version 1.4.13.0) - Download - General Help & Support - Example Scripts - Wiki
OutlookEX (NEW 2019-07-24 - Version 1.3.6.0) - Download - General Help & Support - Example Scripts - Wiki
Outlook Tools (NEW 2019-07-22 - Version 0.6.0.0) - Download - General Help & Support - Wiki
ExcelChart (2017-07-21 - Version 0.4.0.1) - Download - General Help & Support - Example Scripts
PowerPoint (2017-06-06 - Version 0.0.5.0) - Download - General Help & Support
Excel - Example Scripts - Wiki
Word - Wiki
Taks Scheduler (NEW 2019-10-09 - Version 0.9.0.0) - Download - General Help & Support - Wiki

Tutorials:
ADO - Wiki

 

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You can use the _WinAPI_PrintWindow function to capture a window which is behind other windows. I used that function in my Windows Screenshooter app (https://www.autoitscript.com/forum/topic/122941-autoit-windows-screenshooter-v179-build-2015-02-25).

 

Edited by UEZ

Please don't send me any personal message and ask for support! I will not reply!

Selection of finest graphical examples at Codepen.io

The own fart smells best!
Her 'sikim hıyar' diyene bir avuç tuz alıp koşma!
¯\_(ツ)_/¯  ٩(●̮̮̃•̃)۶ ٩(-̮̮̃-̃)۶ૐ

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You can use the _WinAPI_PrintWindow function to capture a window which is behind other windows. I used that function in my Windows Screenshooter app (https://www.autoitscript.com/forum/topic/122941-autoit-windows-screenshooter-v179-build-2015-02-25).

I try this:

#include <GuiConstantsEx.au3>
#include <GDIPlus.au3>
Global Const $dll = DllOpen("user32.dll")
Global Const $g32_dll = DllOpen("gdi32.dll")
Global $hDC_Region, $hObj, $hMemDC, $memBitmap, $aFullScreen, $hFullScreen,$hBMP,$hBitmap_s
$hFullScreen = WinGetHandle("[TITLE:Program Manager;CLASS:Progman]")
$aFullScreen = WinGetPos($hFullScreen)
_Main()
Func _Main()
    _GDIPlus_Startup()
    Local $hGUI, $hBMP, $hBitmap, $hGraphic
;~  $runPID = Run("C:\WINDOWS\NOTEPAD.exe")
    $runPID = Run("C:\WINDOWS\NOTEPAD.exe","",@SW_HIDE)
    $hWnd = WinGetHandleFromPID($runPID)

    Sleep(200)

    $hBMP = Capture_Window($hWnd,667,420)
    
    $hGUI = GUICreate("TEST", 800, 600)
    GUISetState()

    $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGUI)
    _GDIPlus_GraphicsDrawImage($hGraphic, $hBMP, 0, 0)

    _GDIPlus_GraphicsDispose($hGraphic)
    _GDIPlus_BitmapDispose($hBitmap)
    _WinAPI_DeleteObject($hBMP)

    _GDIPlus_Shutdown()

    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE
EndFunc   ;==>_Main

Func Capture_Window($hWnd, $w, $h)
    _GDIPlus_BitmapDispose($hBMP) ;otherwise memory leak
    _WinAPI_DeleteObject($hBitmap_s)
    $undo_chk = False
    Local $hDC_Capture = _WinAPI_GetDC(HWnd($hWnd))

    Local $hMemDC = _WinAPI_CreateCompatibleDC($hDC_Capture)

    $hBitmap_s = _WinAPI_CreateCompatibleBitmap($hDC_Capture, $w, $h)

    Local $hObjectOld = _WinAPI_SelectObject($hMemDC, $hBitmap_s)

    DllCall($g32_dll, "int", "SetStretchBltMode", "hwnd", $hDC_Capture, "uint", 4)
    Local $at = DllCall($dll, "int", "PrintWindow", "hwnd", $hWnd, "handle", $hMemDC, "int", 0)

    _WinAPI_DeleteDC($hMemDC)
    _WinAPI_SelectObject($hMemDC, $hObjectOld)
    _WinAPI_ReleaseDC($hWnd, $hDC_Capture)

    Local $c1 = $aFullScreen[2] - @DesktopWidth, $c2 = $aFullScreen[3] - @DesktopHeight
    Local $wc1 = $w - $c1, $hc2 = $h - $c2

    If (($wc1 > 1 And $wc1 < $w) Or ($w - @DesktopWidth > 1) Or ($hc2 > 7 And $hc2 < $h) Or ($h - @DesktopHeight > 1)) And (BitAND(WinGetState(HWnd($hWnd)), 32) = 32) Then
        Local $hBmp_t = _GDIPlus_BitmapCreateFromHBITMAP($hBitmap_s)

        $hBMP = _GDIPlus_BitmapCloneArea($hBmp_t, 8, 8, $w - 16, $h - 16)
        _GDIPlus_BitmapDispose($hBmp_t)
    Else
        $hBMP = _GDIPlus_BitmapCreateFromHBITMAP($hBitmap_s)
    EndIf
Return $hBMP
EndFunc   ;==>Capture_Window

Func WinGetHandleFromPID($iSearchPID, $tolerance = 2000)
    Sleep($tolerance); give the Window a chance to load
    Local $aList = WinList()
    For $i = 1 To $aList[0][0]
        If WinGetProcess($aList[$i][1]) = $iSearchPID Then Return $aList[$i][1]
    Next
    Return SetError(1, 0, False)
EndFunc   ;==>WinGetHandleFromPID

But it not work,Please help me! Thank you !

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With hidden I mean other windows have overlapped partly or completely the window. Capturing windows with the flag @SW_HIDE is not possible this way.

I assume that hidden windows with @SW_HIDE falg cannot be captured at all.


Please don't send me any personal message and ask for support! I will not reply!

Selection of finest graphical examples at Codepen.io

The own fart smells best!
Her 'sikim hıyar' diyene bir avuç tuz alıp koşma!
¯\_(ツ)_/¯  ٩(●̮̮̃•̃)۶ ٩(-̮̮̃-̃)۶ૐ

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With hidden I mean other windows have overlapped partly or completely the window. Capturing windows with the flag @SW_HIDE is not possible this way.

I assume that hidden windows with @SW_HIDE falg cannot be captured at all.

Thank You Very Much!

If you find a good way, please give me a message!

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If $bManual is true enter the y2 screen pos. ; Return values .: 0 / 1 / -1 / GDI bitmap handle ; Author ........: UEZ ; Version .......: 0.92 build 2017-01-22 ; Modified ......: ; Remarks .......: Do not forget to dispose returned GDI bitmap handle for non clipboard mode using _WinAPI_DeleteObject! ; Related .......: ; Link ..........: ; Example .......: Yes ; =============================================================================================================================== Func _WinAPI_MarkScreenRegionAndCapture($iFillMode = 0, $bClipboard = False, $bManual = False, $iX1 = 0, $iY1 = 0, $iX2 = 0, $iY2 = 0) If @OSBuild > 6299 Then ;https://msdn.microsoft.com/en-us/library/windows/desktop/ms724832(v=vs.85).aspx DllCall("Shcore.dll", "long", "PROCESS_DPI_AWARENESS", 1) ;PROCESS_SYSTEM_DPI_AWARE = 1 (https://msdn.microsoft.com/en-us/library/windows/desktop/dn280512(v=vs.85).aspx) Else DllCall("User32.dll", "bool", "SetProcessDPIAware") EndIf Local $iOld = AutoItSetOption("MouseCoordMode", 1) If Not $bManual Then Local Const $hDesktop = WinGetHandle("[TITLE:Program Manager;CLASS:Progman]") Local Const $aFullScreen = WinGetPos($hDesktop) ;should work also on multi screens Local Const $iW = $aFullScreen[2], $iH = $aFullScreen[3] Local Const $hGUI_Screencapture = GUICreate("", $iW, $iH, $aFullScreen[0], $aFullScreen[1], $WS_POPUP, BitOR($WS_EX_TOPMOST, $WS_EX_LAYERED)) GUISetState(@SW_SHOW, $hGUI_Screencapture) Local Const $hDC = _WinAPI_GetDC($hGUI_Screencapture) Local Const $hGfxDC = _WinAPI_CreateCompatibleDC($hDC) Local Const $hBitmapGDI = _WinAPI_CreateCompatibleBitmap($hDC, $iW, $iH) Local $hObjOld = _WinAPI_SelectObject($hGfxDC, $hBitmapGDI) Local $tSize = DllStructCreate($tagSIZE) $tSize.x = $iW $tSize.y = $iH Local $tSource = DllStructCreate($tagPOINT) Local $tBlend = DllStructCreate($tagBLENDFUNCTION) $tBlend.Alpha = 0xFF $tBlend.Format = 1 Local $tDest = DllStructCreate($tagPOINT), $pPoint = DllStructGetPtr($tDest) $tDest.x = $aFullScreen[0] $tDest.y = $aFullScreen[1] Local Const $hPen = _WinAPI_CreatePen($PS_SOLID, 1, 0x0000FF) Local Const $hPen_Orig = _WinAPI_SelectObject($hGfxDC, $hPen) Local $hBrush, $iAlpha2, $iFlag $iFillMode = $iFillMode > 2 ? 2 : $iFillMode < 0 ? 0 : $iFillMode Switch $iFillMode Case 0 $hBrush = _WinAPI_CreateBrushIndirect($BS_SOLID, 0x808080) $iAlpha2 = 0xA0 $iFlag = $ULW_ALPHA Case 1 $hBrush = _WinAPI_CreateBrushIndirect($BS_HATCHED, 0x808000, $HS_DIAGCROSS) $iAlpha2 = 0x30 $iFlag = $ULW_ALPHA Case 2 $hBrush = _WinAPI_CreateBrushIndirect($BS_HOLLOW, 0x000000) $iAlpha2 = 0xFF ;not needed $iFlag = $ULW_COLORKEY EndSwitch Local $hBrush_Orig = _WinAPI_SelectObject($hGfxDC, $hBrush) Else If Not BitOr($iX1, $iX2, $iY1, $iY2) Then Return SetError(4, 0, 0) EndIf Local $aMPos[5], $aMPos_old[4], $tRECT = _WinAPI_CreateRect(0, 0, 0, 0) Do If $bManual Then $aMPos[2] = 1 Else GUISetCursor(16, 1, $hGUI_Screencapture) $aMPos = GUIGetCursorInfo($hGUI_Screencapture) $aMPos_old[0] = $aMPos[0] $aMPos_old[1] = $aMPos[1] $aMPos_old[2] = MouseGetPos(0) $aMPos_old[3] = MouseGetPos(1) EndIf Switch $aMPos[2] Case 0 ;display crosshair _WinAPI_BitBlt($hGfxDC, 0, 0, $iW, $iH, $hGfxDC, 0, 0, $CAPTUREBLT) _WinAPI_DrawLine($hGfxDC, $tDest.x, $aMPos[1], $iW, $aMPos[1]) _WinAPI_DrawLine($hGfxDC, $aMPos[0], $tDest.y, $aMPos[0], $iH) _WinAPI_UpdateLayeredWindow($hGUI_Screencapture, $hDC, $tDest, $tSize, $hGfxDC, $tSource, 0, $tBlend, $ULW_COLORKEY) Case 1 ;capture selected region If Not $bManual Then $tBlend.Alpha = $iAlpha2 While $aMPos[2] ;mark region GUISetCursor(14, 1, $hGUI_Screencapture) ;WinGetHandle(AutoItWinGetTitle())) $aMPos = GUIGetCursorInfo($hGUI_Screencapture) _WinAPI_BitBlt($hGfxDC, 0, 0, $iW, $iH, $hGfxDC, 0, 0, $CAPTUREBLT) ;clear bitmap ;draw rectangle $tRECT.Left = $aMPos_old[0] $tRECT.Top = $aMPos_old[1] $tRECT.Right = $aMPos[0] $tRECT.Bottom = $aMPos[1] _WinAPI_Rectangle($hGfxDC, $tRECT) If $iFillMode <> 2 Then _WinAPI_InvertRect($hGfxDC, $tRECT) _WinAPI_UpdateLayeredWindow($hGUI_Screencapture, $hDC, $tDest, $tSize, $hGfxDC, $tSource, 0, $tBlend, $iFlag) Sleep(10) WEnd _WinAPI_SelectObject($hGfxDC, $hObjOld) _WinAPI_ReleaseDC($hGUI_Screencapture, $hDC) _WinAPI_DeleteDC($hGfxDC) _WinAPI_DeleteObject($hBitmapGDI) _WinAPI_SelectObject($hGfxDC, $hPen_Orig) _WinAPI_DeleteObject($hPen) _WinAPI_SelectObject($hGfxDC, $hBrush_Orig) _WinAPI_DeleteObject($hBrush) GUIDelete($hGUI_Screencapture) ;capture region $aMPos[0] = MouseGetPos(0) $aMPos[1] = MouseGetPos(1) Else $aMPos_old[2] = $iX1 $aMPos_old[3] = $iY1 $aMPos[0] = $iX2 $aMPos[1] = $iY2 EndIf Local Const $hDC_Region = _WinAPI_GetDC(0) Local Const $hMemDC = _WinAPI_CreateCompatibleDC($hDC_Region) Local Const $iW_Region = Abs($aMPos[0] - $aMPos_old[2]) + 1, $iH_Region = Abs($aMPos[1] - $aMPos_old[3]) + 1 Local $hHBitmap_Captured = _WinAPI_CreateCompatibleBitmap($hDC_Region, $iW_Region, $iH_Region) $hObjOld = _WinAPI_SelectObject($hMemDC, $hHBitmap_Captured) _WinAPI_BitBlt($hMemDC, 0, 0, $iW_Region, $iH_Region, $hDC_Region, _ $aMPos[0] > $aMPos_old[2] ? $aMPos_old[2] : $aMPos[0], _ $aMPos[1] > $aMPos_old[3] ? $aMPos_old[3] : $aMPos[1], BitOR($SRCCOPY, $CAPTUREBLT)) Local $hHBitmap_Clipboard = _WinAPI_CopyImage($hHBitmap_Captured, 0, 0, 0, BitOR($LR_COPYDELETEORG, $LR_COPYRETURNORG)) _WinAPI_SelectObject($hHBitmap_Captured, $hObjOld) _WinAPI_DeleteDC($hHBitmap_Captured) _WinAPI_ReleaseDC(0, $hDC_Region) AutoItSetOption("MouseCoordMode", $iOld) If $bClipboard Then ;put captured region to clipboard If Not _ClipBoard_Open(0) Then _WinAPI_DeleteObject($hHBitmap_Clipboard) Return SetError(1, 0, 0) EndIf If Not _ClipBoard_Empty() Then _WinAPI_DeleteObject($hHBitmap_Clipboard) Return SetError(2, 0, 0) EndIf Local Const $hCP = _ClipBoard_SetDataEx($hHBitmap_Clipboard, $CF_BITMAP) If Not $hCP Or @error Then _WinAPI_DeleteObject($hHBitmap_Clipboard) Return SetError(3, 0, 0) EndIf _ClipBoard_Close() _WinAPI_DeleteObject($hHBitmap_Clipboard) Return 1 Else Return $hHBitmap_Clipboard EndIf EndSwitch Switch GUIGetMsg() Case $GUI_EVENT_CLOSE _WinAPI_SelectObject($hGfxDC, $hObjOld) _WinAPI_ReleaseDC($hGUI_Screencapture, $hDC) _WinAPI_DeleteDC($hGfxDC) _WinAPI_DeleteObject($hBitmapGDI) _WinAPI_SelectObject($hGfxDC, $hPen_Orig) _WinAPI_DeleteObject($hPen) GUIDelete($hGUI_Screencapture) AutoItSetOption("MouseCoordMode", $iOld) Return -1 EndSwitch Until False EndFunc ;==>_WinAPI_MarkScreenRegionAndCapture Might be useful...
       
      Download:  _WinAPI_MarkScreenRegionAndCapture.au3  (same as above in the code box)
       
      Tested only on Win10 x64 but should work also on other Window versions. If not please reply.
       
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