Jump to content
tcurran

UDF for detecting whether AutoIt can cut-paste from a window

Recommended Posts

Here's a short UDF that will, at least in most cases, detect whether a window can be copied from or pasted to programmatically--for example, by Send()ing ctl-c, ctl-v. This is often disabled when programs (like your AutoIt script) run at a lower UAC integrity level than the application they are trying to operate on.

#include <WinAPI.au3>

Func _WindowIsPasteable($handle) ;accepts window handle; returns true or false whether a window will accept Ctl-C, Ctl-V
    Local $bCanPaste = True
    Local $hTestWindowPID = 0
    Local $hTestWindowTID = _WinAPI_GetWindowThreadProcessId($handle, $hTestWindowPID)
    _WinAPI_AttachThreadInput(_WinAPI_GetCurrentThreadId(), $hTestWindowTID, True);attach to window we want to paste into
    $bCanPaste = _WinAPI_GetFocus() ;Test whether window is paste-able--returns False if it is not
    _WinAPI_AttachThreadInput(_WinAPI_GetCurrentThreadId, $hTestWindowTID, False);detach from window thread
    Return $bCanPaste
EndFunc

Pass it a window handle; it returns true or false whether a window will accept programmatic pasting. The function may not work on the CMD window, since it handles the clipboard uniquely.

This function works by attaching to the program thread of the window whose handle it receives, then attempting to perform a GetFocus on that thread. In most cases, the attempt will fail if the window will not accept programmatic copy-paste.

Edited by tcurran

Share this post


Link to post
Share on other sites

Thanks for this.  I hadn't considered such a method.  But I do have a question:

Quote

the attempt will fail if the window will not accept programmatic copy-paste

Can you point to documentation that explains this in more detail?  Are there cases where a browser window, for example, would return False (='no paste')?

Share this post


Link to post
Share on other sites

qwert--

Those are excellent questions. This approach was suggested to me by "Joe" the developer of ArsClip. I adapted his approach to AutoIT, tested it in my particular application (it worked!!) and posted it here.

Your question about browser windows is particularly trenchant, but--since I haven't tested it--I have no answer. Please post back here if you learn whether it does or doesn't work.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By rudi
      Hi,
      from other postings here as a start I'm quite Close to my Goal of putting formatted text to the clipboard:
      #include-once #include <GUIConstantsEx.au3> #include <GuiRichEdit.au3> #include <WindowsConstants.au3> Global $g_idLblMsg, $g_hRichEdit Example("The first text will be formatted ""as is""" & @CRLF & _ "(Default Font and font size)", "This text is formatted differently") MsgBox(0, "Rich Text copied", "Formatted Text put to clipboard") Func Example($TextDefault, $TextCourier) Local $hGui, $iMsg, $idBtnNext, $iStep = 0 $hGui = GUICreate("Example (" & StringTrimRight(@ScriptName, StringLen(".exe")) & ")", 320, 350, -1, -1) $g_hRichEdit = _GUICtrlRichEdit_Create($hGui, $TextDefault, 10, 10, 300, 220, BitOR($ES_MULTILINE, $WS_VSCROLL, $ES_AUTOVSCROLL)) $g_idLblMsg = GUICtrlCreateLabel("", 10, 235, 300, 60) GUISetState(@SW_SHOW) _GUICtrlRichEdit_SetSel($g_hRichEdit, -1, -1) ; set selection behind last CHAR in RTF_EDIT _GUICtrlRichEdit_SetFont($g_hRichEdit, 8, "Courier New") ; change font to 8pt, Courier New _GUICtrlRichEdit_AppendText($g_hRichEdit, @CRLF & $TextCourier) _GUICtrlRichEdit_SetSel($g_hRichEdit, 0, -1) ; select all the content of the RTF_EDIT _GUICtrlRichEdit_Copy($g_hRichEdit) ; put the selection to the clipboard EndFunc ;==>Example  
      Finally the clipboard content has to hold pre-formatted data to be pasted into an email body. for the 2nd part I'd like to add a frame around the text, like I did manually before taking this screenshot.



      Any suggestions, or maybe some absolutely different Approach?
       
      CU, Rudi.
    • By XinYoung
      HI! ... this is a big one (at least for me) 
      You guys previously helped me copy the used range in column A and paste them into a Website one at a time in a loop. Cool! Now, for another function, I have 2 columns, A and B, and two input boxes in the Website. I'm having a hard time replicating the loop for the 2 columns. 
      This is how I'm opening the Excel workbook (copied from the previous function that only had 1 column). I need to also get the used range in column B.
      Func OpenExcelForCopy() Global $aBBTableData Global $oExcel = _Excel_Open() Global $oWorkbook = _Excel_BookOpen($oExcel, $ChosenFileName, Default, True, True) $oExcel.Sheets("CopyCourses").Activate ;~ Get all used cells in column A:A Global $aSearchItems = _Excel_RangeRead($oWorkbook, 1, $oWorkbook.Sheets("CopyCourses").Usedrange.Columns("A:A")) ;~ Duplicate the $aSearchItems Array Global $aSearchResult = $aSearchItems ;~ Loop through the array starting at 0 until the end of the array which is (Ubound($aSearchItems) - 1) For $i = 0 To UBound($aSearchItems) - 1 $aSearchResult[$i] = SearchCourseForCopy($aSearchItems[$i]) Next _Excel_RangeWrite($oWorkbook, Default, $aSearchResult, "C1") Finished() EndFunc ;==>OpenExcelForCopy Then we eventually get here. I don't think anything needs to change here but I'm not sure. This is where I paste the data from Column A into an input field (which is a search tool in a website). If the search is good, then we get to the tricky part...
      ;~ OK, we logged in and we searched for a course. Lets COPY it! Func CopyCourseBegin() Local $sResult $iSearchIndex = _ArraySearch($aBBTableData, "Course ID", 0, 0, 0, 1, 1, 0) ;~ If the course was not found, do this. If $iSearchIndex = -1 Then ;~ MsgBox(4096, "Search Error", "Item not found") $sResult = "Source Not Found" _Excel_RangeWrite($oWorkbook, Default, $aSearchResult, "C1") ;~ Now go back to the Excel sheet and search for the next one. ;~ If the course was found, begin the COPY process. Else For $i = 0 To UBound($aSearchItems) - 1 $aSearchResult[$i] = CopyCourseNow($aSearchItems[$i]) Next $sResult = "Copied" _Excel_RangeWrite($oWorkbook, Default, $aSearchResult, "C1") EndIf Return $sResult EndFunc ;==>CopyCourseBegin This is the "tricky part" where I'm confused. I can copy and paste what's in column A just fine, but I can't manage to replicate it for column B. I need to paste whats in Column B into "destinationCourseId"
      ;~ The course search was successful. COPY the course now. Func CopyCourseNow($_sSearchResult) ;~ Navigate to the course copy page. _IENavigate($oIE, $urlBBCourseCopy) ;~ Copy the SOURCE course ID from the Excel sheet ;~ Paste whats copied from column A into the Source Course ID text box Local $oForm = _IEGetObjByName($oIE, "selectCourse") Local $oSearchString = _IEFormElementGetObjByName($oForm, "sourceCourseId") _IEFormElementSetValue($oSearchString, $_sSearchResult) ;~ Paste whats copied from column B into the Destination Course ID text box ?!?!?!?! Local $oForm = _IEGetObjByName($oIE, "selectCourse") Local $oSearchString = _IEFormElementGetObjByName($oForm, "destinationCourseId") _IEFormElementSetValue($oSearchString, $_sSearchResult) ;~ Just exit cause im stuck :( _Exit() EndFunc ;==>CopyCourseNow After I paste the data from column A into "sourceCourseId" and column B into "destinationCourseId", I'll make it do some stuff. Then I need it to loop around until the used ranges in column A & B is finished.
      Does the entire code need to change now that there's two columns?
       
       
    • By coffeeturtle
      Programs like Ditto are a great augmentation to the Windows clipboard where it keeps a list of items you copy and paste and you can go back to days, weeks, months later. It also comes in handy for multiple copied items you need to paste over and over again.
      https://sourceforge.net/projects/ditto-cp/
      Windows 10 also now has a clipboard history capability (though not as robust, I think, as Ditto).
      https://www.windowscentral.com/how-use-new-clipboard-windows-10-october-2018-update
      I would like to simulate this type of clipboard history into my own apps independent of Windows' clipboard, but I haven't a clue as to where to begin.
      Thank you in advance for any suggestions, examples, shelved codes. ☺
    • By Valiante
      I'm creating a tool which automatically saves screenshots.  I've found that some images appear corrupt after saving.  I've narrowed the source down to screenshots taken from within an RDP session via the Ctrl+Alt+Plus (PrtScn equivalent) and Ctrl+Alt+Minus (Alt+PrtScn equivalent) key combos.
      Here is the example code:
      #include <ClipBoard.au3> #include <GDIPlus.au3> If _ClipBoard_IsFormatAvailable($CF_BITMAP) Then ConsoleWrite("+Bitmap found on Clipboard" & @CRLF) If Not _ClipBoard_Open(0) Then MsgBox(16, "Error", "_ClipBoard_Open failed") Exit EndIf $hClipboardImage = _ClipBoard_GetDataEx($CF_BITMAP) _ClipBoard_Close() _GDIPlus_Startup() $hBitmap = _GDIPlus_BitmapCreateFromHBITMAP($hClipboardImage) $sCLSID = _GDIPlus_EncodersGetCLSID("JPG") _GDIPlus_ImageSaveToFileEx($hBitmap, @ScriptDir & "\" & TimerInit() & "_Clipboard_Image.jpg", $sCLSID, 0) _GDIPlus_BitmapDispose($hBitmap) _GDIPlus_Shutdown() Else MsgBox(48, @ScriptName, "No Bitmap found on Clipboard") EndIf If you copy a local window to the clipboard via Alt+PrtScn the above works fine.  If you copy a window in an RDP session via Ctrl+Alt+Minus it saves the image, but the left-hand edge appears to contain a few pixels sliced off the right-hand side of the bitmap (see two attached images for examples; one good, one bad).  If you paste directly into MSPaint, the image appears correctly, so the clipboard contents is good. It seems to be the process of converting the bitmap handle to an image file via GDIPlus which corrupts it (though I may be wrong about this).
      I've tried inspecting the contents of the clipboard via the _ClipBoard_EnumFormats example and I've noticed the clipboard from the RDP session contains a couple more formats;
      Local:
      Clipboard formats ..: 3 Clipboard format 1 .: Bitmap Clipboard format 2 .: DIB Clipboard format 3 .: DIB V5 RDP:
      Clipboard formats ..: 5 Clipboard format 1 .: DataObject Clipboard format 2 .: DIB Clipboard format 3 .: DIB V5 Clipboard format 4 .: Ole Private Data Clipboard format 5 .: Bitmap However the _ClipBoard_GetDataEx function is specifying the $CF_BITMAP constant for the format, which both instances contain, so I'm not sure the extra formats have any impact?
      I've tried using a combination of _ClipBoard_GetDataEx($CF_DIB) and _GDIPlus_BitmapCreateFromMemory in an effort to write the binary directly to a file, instead of using a bitmap handle, however this doesn't appear to work and just returns a zero and doesn't set @error to anything, which isn't covered in the help file (a failure should return a zero and set the @error level to something).
      I've hunted around the forums and tried everything I can think of. I can normally figure most things out without posting but I've been dipping in and out of this script for a few months now and have finally thrown in the towel and must ask you guys for help, which isn't a decision I take lightly.  Your help is, as always, greatly appreciated.


×
×
  • Create New...