OCR + MouseClickDrag METHOD

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AHKMode
Posts: 10
Joined: 20 Apr 2020, 20:21

OCR + MouseClickDrag METHOD

10 May 2020, 10:13

Hello there!

how can i make below script

^q::
Run, OCR.ahk
{
mouseclickdrag, left, 23, 213, 15, 341
{
MsgBox, % text
}}
return

can you help me. because nothings happen :|
User avatar
flyingDman
Posts: 883
Joined: 29 Sep 2013, 19:01

Re: OCR + MouseClickDrag METHOD

10 May 2020, 14:41

Presumably you intend to use the code here: https://www.autohotkey.com/boards/viewtopic.php?f=6&t=72674 ?

You can adapt @teadrinker 's screenclipping version for a fixed area on the screen like this:

Code: Select all

^q::
hBitmap := HBitmapFromScreen(23, 213, 15, 341)
pIRandomAccessStream := HBitmapToRandomAccessStream(hBitmap)
DllCall("DeleteObject", "Ptr", hBitmap)
text := ocr(pIRandomAccessStream, "en")
MsgBox, % text
Return

HBitmapFromScreen(X, Y, W, H) {
   HDC := DllCall("GetDC", "Ptr", 0, "UPtr")
   HBM := DllCall("CreateCompatibleBitmap", "Ptr", HDC, "Int", W, "Int", H, "UPtr")
   PDC := DllCall("CreateCompatibleDC", "Ptr", HDC, "UPtr")
   DllCall("SelectObject", "Ptr", PDC, "Ptr", HBM)
   DllCall("BitBlt", "Ptr", PDC, "Int", 0, "Int", 0, "Int", W, "Int", H
                   , "Ptr", HDC, "Int", X, "Int", Y, "UInt", 0x00CC0020)
   DllCall("DeleteDC", "Ptr", PDC)
   DllCall("ReleaseDC", "Ptr", 0, "Ptr", HDC)
   Return HBM
}

HBitmapToRandomAccessStream(hBitmap) {
   static IID_IRandomAccessStream := "{905A0FE1-BC53-11DF-8C49-001E4FC686DA}"
        , IID_IPicture            := "{7BF80980-BF32-101A-8BBB-00AA00300CAB}"
        , PICTYPE_BITMAP := 1
        , BSOS_DEFAULT   := 0
        
   DllCall("Ole32\CreateStreamOnHGlobal", "Ptr", 0, "UInt", true, "PtrP", pIStream, "UInt")
   
   VarSetCapacity(PICTDESC, sz := 8 + A_PtrSize*2, 0)
   NumPut(sz, PICTDESC)
   NumPut(PICTYPE_BITMAP, PICTDESC, 4)
   NumPut(hBitmap, PICTDESC, 8)
   riid := CLSIDFromString(IID_IPicture, GUID1)
   DllCall("OleAut32\OleCreatePictureIndirect", "Ptr", &PICTDESC, "Ptr", riid, "UInt", false, "PtrP", pIPicture, "UInt")
   ; IPicture::SaveAsFile
   DllCall(NumGet(NumGet(pIPicture+0) + A_PtrSize*15), "Ptr", pIPicture, "Ptr", pIStream, "UInt", true, "UIntP", size, "UInt")
   riid := CLSIDFromString(IID_IRandomAccessStream, GUID2)
   DllCall("ShCore\CreateRandomAccessStreamOverStream", "Ptr", pIStream, "UInt", BSOS_DEFAULT, "Ptr", riid, "PtrP", pIRandomAccessStream, "UInt")
   ObjRelease(pIPicture)
   ObjRelease(pIStream)
   Return pIRandomAccessStream
}

CLSIDFromString(IID, ByRef CLSID) {
   VarSetCapacity(CLSID, 16, 0)
   if res := DllCall("ole32\CLSIDFromString", "WStr", IID, "Ptr", &CLSID, "UInt")
      throw Exception("CLSIDFromString failed. Error: " . Format("{:#x}", res))
   Return &CLSID
}

ocr(file, lang := "FirstFromAvailableLanguages")
{
   static OcrEngineStatics, OcrEngine, MaxDimension, LanguageFactory, Language, CurrentLanguage, BitmapDecoderStatics, GlobalizationPreferencesStatics
   if (OcrEngineStatics = "")
   {
      CreateClass("Windows.Globalization.Language", ILanguageFactory := "{9B0252AC-0C27-44F8-B792-9793FB66C63E}", LanguageFactory)
      CreateClass("Windows.Graphics.Imaging.BitmapDecoder", IBitmapDecoderStatics := "{438CCB26-BCEF-4E95-BAD6-23A822E58D01}", BitmapDecoderStatics)
      CreateClass("Windows.Media.Ocr.OcrEngine", IOcrEngineStatics := "{5BFFA85A-3384-3540-9940-699120D428A8}", OcrEngineStatics)
      DllCall(NumGet(NumGet(OcrEngineStatics+0)+6*A_PtrSize), "ptr", OcrEngineStatics, "uint*", MaxDimension)   ; MaxImageDimension
   }
   if (file = "ShowAvailableLanguages")
   {
      if (GlobalizationPreferencesStatics = "")
         CreateClass("Windows.System.UserProfile.GlobalizationPreferences", IGlobalizationPreferencesStatics := "{01BF4326-ED37-4E96-B0E9-C1340D1EA158}", GlobalizationPreferencesStatics)
      DllCall(NumGet(NumGet(GlobalizationPreferencesStatics+0)+9*A_PtrSize), "ptr", GlobalizationPreferencesStatics, "ptr*", LanguageList)   ; get_Languages
      DllCall(NumGet(NumGet(LanguageList+0)+7*A_PtrSize), "ptr", LanguageList, "int*", count)   ; count
      loop % count
      {
         DllCall(NumGet(NumGet(LanguageList+0)+6*A_PtrSize), "ptr", LanguageList, "int", A_Index-1, "ptr*", hString)   ; get_Item
         DllCall(NumGet(NumGet(LanguageFactory+0)+6*A_PtrSize), "ptr", LanguageFactory, "ptr", hString, "ptr*", LanguageTest)   ; CreateLanguage
         DllCall(NumGet(NumGet(OcrEngineStatics+0)+8*A_PtrSize), "ptr", OcrEngineStatics, "ptr", LanguageTest, "int*", bool)   ; IsLanguageSupported
         if (bool = 1)
         {
            DllCall(NumGet(NumGet(LanguageTest+0)+6*A_PtrSize), "ptr", LanguageTest, "ptr*", hText)
            buffer := DllCall("Combase.dll\WindowsGetStringRawBuffer", "ptr", hText, "uint*", length, "ptr")
            text .= StrGet(buffer, "UTF-16") "`n"
         }
         ObjRelease(LanguageTest)
      }
      ObjRelease(LanguageList)
      return text
   }
   if (lang != CurrentLanguage) or (lang = "FirstFromAvailableLanguages")
   {
      if (OcrEngine != "")
      {
         ObjRelease(OcrEngine)
         if (CurrentLanguage != "FirstFromAvailableLanguages")
            ObjRelease(Language)
      }
      if (lang = "FirstFromAvailableLanguages")
         DllCall(NumGet(NumGet(OcrEngineStatics+0)+10*A_PtrSize), "ptr", OcrEngineStatics, "ptr*", OcrEngine)   ; TryCreateFromUserProfileLanguages
      else
      {
         CreateHString(lang, hString)
         DllCall(NumGet(NumGet(LanguageFactory+0)+6*A_PtrSize), "ptr", LanguageFactory, "ptr", hString, "ptr*", Language)   ; CreateLanguage
         DeleteHString(hString)
         DllCall(NumGet(NumGet(OcrEngineStatics+0)+9*A_PtrSize), "ptr", OcrEngineStatics, ptr, Language, "ptr*", OcrEngine)   ; TryCreateFromLanguage
      }
      if (OcrEngine = 0)
      {
         msgbox Can not use language "%lang%" for OCR, please install language pack.
         ExitApp
      }
      CurrentLanguage := lang
   }
   IRandomAccessStream := file
   DllCall(NumGet(NumGet(BitmapDecoderStatics+0)+14*A_PtrSize), "ptr", BitmapDecoderStatics, "ptr", IRandomAccessStream, "ptr*", BitmapDecoder)   ; CreateAsync
   WaitForAsync(BitmapDecoder)
   BitmapFrame := ComObjQuery(BitmapDecoder, IBitmapFrame := "{72A49A1C-8081-438D-91BC-94ECFC8185C6}")
   DllCall(NumGet(NumGet(BitmapFrame+0)+12*A_PtrSize), "ptr", BitmapFrame, "uint*", width)   ; get_PixelWidth
   DllCall(NumGet(NumGet(BitmapFrame+0)+13*A_PtrSize), "ptr", BitmapFrame, "uint*", height)   ; get_PixelHeight
   if (width > MaxDimension) or (height > MaxDimension)
   {
      msgbox Image is to big - %width%x%height%.`nIt should be maximum - %MaxDimension% pixels
      ExitApp
   }
   BitmapFrameWithSoftwareBitmap := ComObjQuery(BitmapDecoder, IBitmapFrameWithSoftwareBitmap := "{FE287C9A-420C-4963-87AD-691436E08383}")
   DllCall(NumGet(NumGet(BitmapFrameWithSoftwareBitmap+0)+6*A_PtrSize), "ptr", BitmapFrameWithSoftwareBitmap, "ptr*", SoftwareBitmap)   ; GetSoftwareBitmapAsync
   WaitForAsync(SoftwareBitmap)
   DllCall(NumGet(NumGet(OcrEngine+0)+6*A_PtrSize), "ptr", OcrEngine, ptr, SoftwareBitmap, "ptr*", OcrResult)   ; RecognizeAsync
   WaitForAsync(OcrResult)
   DllCall(NumGet(NumGet(OcrResult+0)+6*A_PtrSize), "ptr", OcrResult, "ptr*", LinesList)   ; get_Lines
   DllCall(NumGet(NumGet(LinesList+0)+7*A_PtrSize), "ptr", LinesList, "int*", count)   ; count
   loop % count
   {
      DllCall(NumGet(NumGet(LinesList+0)+6*A_PtrSize), "ptr", LinesList, "int", A_Index-1, "ptr*", OcrLine)
      DllCall(NumGet(NumGet(OcrLine+0)+7*A_PtrSize), "ptr", OcrLine, "ptr*", hText) 
      buffer := DllCall("Combase.dll\WindowsGetStringRawBuffer", "ptr", hText, "uint*", length, "ptr")
      text .= StrGet(buffer, "UTF-16") "`n"
      ObjRelease(OcrLine)
   }
   Close := ComObjQuery(IRandomAccessStream, IClosable := "{30D5A829-7FA4-4026-83BB-D75BAE4EA99E}")
   DllCall(NumGet(NumGet(Close+0)+6*A_PtrSize), "ptr", Close)   ; Close
   ObjRelease(Close)
   Close := ComObjQuery(SoftwareBitmap, IClosable := "{30D5A829-7FA4-4026-83BB-D75BAE4EA99E}")
   DllCall(NumGet(NumGet(Close+0)+6*A_PtrSize), "ptr", Close)   ; Close
   ObjRelease(Close)
   ObjRelease(IRandomAccessStream)
   ObjRelease(BitmapDecoder)
   ObjRelease(BitmapFrame)
   ObjRelease(BitmapFrameWithSoftwareBitmap)
   ObjRelease(SoftwareBitmap)
   ObjRelease(OcrResult)
   ObjRelease(LinesList)
   return text
}

CreateClass(string, interface, ByRef Class)
{
   CreateHString(string, hString)
   VarSetCapacity(GUID, 16)
   DllCall("ole32\CLSIDFromString", "wstr", interface, "ptr", &GUID)
   result := DllCall("Combase.dll\RoGetActivationFactory", "ptr", hString, "ptr", &GUID, "ptr*", Class)
   if (result != 0)
   {
      if (result = 0x80004002)
         msgbox No such interface supported
      else if (result = 0x80040154)
         msgbox Class not registered
      else
         msgbox error: %result%
      ExitApp
   }
   DeleteHString(hString)
}

CreateHString(string, ByRef hString)
{
    DllCall("Combase.dll\WindowsCreateString", "wstr", string, "uint", StrLen(string), "ptr*", hString)
}

DeleteHString(hString)
{
   DllCall("Combase.dll\WindowsDeleteString", "ptr", hString)
}

WaitForAsync(ByRef Object)
{
   AsyncInfo := ComObjQuery(Object, IAsyncInfo := "{00000036-0000-0000-C000-000000000046}")
   loop
   {
      DllCall(NumGet(NumGet(AsyncInfo+0)+7*A_PtrSize), "ptr", AsyncInfo, "uint*", status)   ; IAsyncInfo.Status
      if (status != 0)
      {
         if (status != 1)
         {
            DllCall(NumGet(NumGet(AsyncInfo+0)+8*A_PtrSize), "ptr", AsyncInfo, "uint*", ErrorCode)   ; IAsyncInfo.ErrorCode
            msgbox AsyncInfo status error: %ErrorCode%
            ExitApp
         }
         ObjRelease(AsyncInfo)
         break
      }
      sleep 10
   }
   DllCall(NumGet(NumGet(Object+0)+8*A_PtrSize), "ptr", Object, "ptr*", ObjectResult)   ; GetResults
   ObjRelease(Object)
   Object := ObjectResult
}
AHKMode
Posts: 10
Joined: 20 Apr 2020, 20:21

Re: OCR + MouseClickDrag METHOD

10 May 2020, 23:19

thanks flyingDman!

but currently my screen coordinates on window look like a getting bigger.. although my screen to capture size are like 0,0,20,10 coordinates only..

btw, can we just command the OCR included a mouseclickdrag ?

kinda like of below script?

^q::
Sleep, 2000
text := OCR()
if errorlevel = 0
{
mouseclickdrag, left, 23, 34, 45, 56, 50
sleep, 2000
{
msgbox, % text
}
}

return

that was getting stuck only on OCR...
User avatar
flyingDman
Posts: 883
Joined: 29 Sep 2013, 19:01

Re: OCR + MouseClickDrag METHOD

11 May 2020, 00:56

but currently my screen coordinates on window look like a getting bigger.. although my screen to capture size are like 0,0,20,10 coordinates only..
I don't understand what you are trying to say.
can we just command the OCR included a mouseclickdrag ?
No. OCR is a function requiring an image. In addition, you already have the coordinates of the area you want to read. Mouseclickdrag simulates a mouse action. It's unnecessary.
AHKMode
Posts: 10
Joined: 20 Apr 2020, 20:21

Re: OCR + MouseClickDrag METHOD

11 May 2020, 06:41

thanks for the reply sir.. appreciated

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