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QT Error with Twain Data Source

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  • B bhim
    20 Dec 2017, 23:41

    I tried the exact same exact same Twain.

    M Offline
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    mrjj
    Lifetime Qt Champion
    wrote on 21 Dec 2017, 06:56 last edited by
    #22

    @bhim
    Ok but it didnt work or was not what you wanted?

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    • B Offline
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      bhim
      wrote on 21 Dec 2017, 15:36 last edited by
      #23

      It did not work. However i am able to resolve most of the error for data type conversion. I am now stuck at below, i am not able to go to definition\declaration of this method to make any change. I know how to do it in Visual Studio but not in QT. Can you please help

      0_1513870545958_2d8762fa-efe9-42b6-9bcb-a13c435fa223-image.png

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      • B Offline
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        bhim
        wrote on 21 Dec 2017, 17:01 last edited by bhim
        #24

        Hi,

        I have resolved all string related error. Now my project is showing this :-1: error: LNK1104: cannot open file 'freeimage.lib' . If i could find the Visual Studio equivalent or Project property in QT, that would be very helpful to very file the linker paths.

        M 1 Reply Last reply 21 Dec 2017, 18:42
        0
        • B bhim
          21 Dec 2017, 17:01

          Hi,

          I have resolved all string related error. Now my project is showing this :-1: error: LNK1104: cannot open file 'freeimage.lib' . If i could find the Visual Studio equivalent or Project property in QT, that would be very helpful to very file the linker paths.

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          mrjj
          Lifetime Qt Champion
          wrote on 21 Dec 2017, 18:42 last edited by
          #25

          @bhim
          you mean to link the LIB file to the project ?
          http://doc.qt.io/qt-5/third-party-libraries.html
          http://doc.qt.io/qtcreator/creator-project-qmake-libraries.html

          Basically you need a
          LIBS += -L"3rdparty/CatWhisperer/lib" -lCatWhisperer
          (with correct names of course)

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          • B Offline
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            bhim
            wrote on 21 Dec 2017, 19:37 last edited by
            #26

            Thanks , this resolve the lib issue. Now below 2 error

            14:31:45: Running steps for project src...
            14:31:45: Configuration unchanged, skipping qmake step.
            14:31:45: Starting: "C:\Qt\qtcreator-4.5.0\bin\jom.exe"
            c:\Qt\4.8.7\bin\qmake.exe -spec c:\Qt\4.8.7\mkspecs\win32-msvc2008 CONFIG+=release -o Makefile ..\src\src.pro
            C:\Qt\qtcreator-4.5.0\bin\jom.exe -f Makefile.Debug
            link /LIBPATH:"c:\Qt\4.8.7\lib" /NOLOGO /DYNAMICBASE /NXCOMPAT /DEBUG /DLL /MANIFEST /MANIFESTFILE:"debug\TWAINDS_FreeImage.intermediate.manifest" /OUT:debug\TWAINDS_FreeImage.dll @C:\Users\rathorb\AppData\Local\Temp\TWAINDS_FreeImage.dll.13524.62.jom
            TWAIN_UI.obj : error LNK2019: unresolved external symbol __imp__SHGetSpecialFolderPathA@16 referenced in function "public: __thiscall CTWAIN_UI::CTWAIN_UI(class CTWAINDS_FreeImage *)" (??0CTWAIN_UI@@QAE@PAVCTWAINDS_FreeImage@@@Z)
            debug\TWAINDS_FreeImage.dll : fatal error LNK1120: 1 unresolved externals
            jom: C:\ODIImages\Source\Twain\twain-samples-master\twain-samples-master\TWAIN-Samples\Twain_DS_sample01\build-src-Unnamed-Release\Makefile.Debug [debug\TWAINDS_FreeImage.dll] Error 1120
            jom: C:\ODIImages\Source\Twain\twain-samples-master\twain-samples-master\TWAIN-Samples\Twain_DS_sample01\build-src-Unnamed-Release\Makefile [debug] Error 2
            14:31:51: The process "C:\Qt\qtcreator-4.5.0\bin\jom.exe" exited with code 2.
            Error while building/deploying project src (kit: Unnamed)
            The kit Unnamed has configuration issues which might be the root cause for this problem.
            When executing step "Make"
            14:31:51: Elapsed time: 00:06.

            debug\TWAINDS_FreeImage.dll:-1: error: LNK1120: 1 unresolved externals

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            • M Offline
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              mrjj
              Lifetime Qt Champion
              wrote on 21 Dec 2017, 19:48 last edited by
              #27

              Hi
              seems you need to link to
              Shell32.lib also
              https://msdn.microsoft.com/en-us/library/windows/desktop/bb762204(v=vs.85).aspx

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              • B Offline
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                bhim
                wrote on 21 Dec 2017, 20:21 last edited by
                #28

                Thanks. I m able to build and run it now. But not able to find the output file, a .ds file anywhere? Can you please help me find where project is generating this file.

                Below is pro file code

                unix {
                TEMPLATE = lib
                VERSION = 1.0
                DEFINES += UNIX
                }
                PROJECT_FILE_NAME = TWAINDS_FreeImage
                TARGET = $$PROJECT_FILE_NAME
                LIBS += -lfreeimage

                TWAIN datasources end with a .ds instead of .so

                QMAKE_POST_LINK = cp
                $(TARGET)
                $${PROJECT_FILE_NAME}.ds
                ds.path = /usr/local/lib/twain/FreeImage
                ds.files = $${PROJECT_FILE_NAME}.ds
                TWAIN_logo.png
                INSTALLS += ds
                QMAKE_CLEAN = $${PROJECT_FILE_NAME}.ds
                INCLUDEPATH = /usr/local/include
                ../../pub/external/include
                ../../pub/include
                ../../visual_studio/Debug32
                ../../common
                LIBS += -L"../../pub/external/lib" -lFreeImage
                SOURCES += ../../common/CTiffWriter.cpp
                ../../common/CommonTWAIN.cpp
                CommonDS.cpp
                CScanner_FreeImage.cpp
                CTWAINDS_Base.cpp
                CTWAINDS_FreeImage.cpp
                DSMInterface.cpp
                TWAINContainer.cpp
                TWAINContainerFix32.cpp
                TWAINContainerFrame.cpp
                TWAINContainerInt.cpp
                CTWAINDS_Sample1.cpp
                TWAIN_UI.cpp
                TWAINContainerString.cpp
                TWAINContainerFix32Range.cpp
                TWAINContainerBool.cpp
                QT_UI.cpp
                Qt_MainForm.cpp
                Qt_About.cpp
                Qt_ProfileName.cpp
                HEADERS += ../../common/Common.h
                ../../common/CommonTWAIN.h
                ../../common/CTiffWriter.h
                CScanner_FreeImage.h
                CTWAINDS_Base.h
                CTWAINDS_FreeImage.h
                CommonDS.h
                DSMInterface.h
                TWAINContainerFix32.h
                TWAINContainerFrame.h
                TWAINContainer.h
                TWAINContainerInt.h
                CTWAINDS_Sample1.h
                TWAIN_UI.h
                TWAINContainerString.h
                TWAINContainerFix32Range.h
                TWAINContainerBool.h
                QT_UI.h
                Qt_MainForm.h
                Qt_About.h
                Qt_ProfileName.h
                ui_About.h
                ui_MainForm.h
                ui_About.h
                TEMPLATE = lib
                CONFIG += warn_on
                debug
                x86 ppc

                QMAKE_BUNDLE_EXTENSION = ds

                this project doesn't need any QT libs.

                QMAKE_LIBS_QT =
                QMAKE_LIBS_QT_THREAD =
                FORMS += MainForm.ui
                About.ui
                ProfileName.ui
                RESOURCES += qtresources.qrc

                unix|win32: LIBS += -lshell32

                M 1 Reply Last reply 21 Dec 2017, 20:26
                0
                • B bhim
                  21 Dec 2017, 20:21

                  Thanks. I m able to build and run it now. But not able to find the output file, a .ds file anywhere? Can you please help me find where project is generating this file.

                  Below is pro file code

                  unix {
                  TEMPLATE = lib
                  VERSION = 1.0
                  DEFINES += UNIX
                  }
                  PROJECT_FILE_NAME = TWAINDS_FreeImage
                  TARGET = $$PROJECT_FILE_NAME
                  LIBS += -lfreeimage

                  TWAIN datasources end with a .ds instead of .so

                  QMAKE_POST_LINK = cp
                  $(TARGET)
                  $${PROJECT_FILE_NAME}.ds
                  ds.path = /usr/local/lib/twain/FreeImage
                  ds.files = $${PROJECT_FILE_NAME}.ds
                  TWAIN_logo.png
                  INSTALLS += ds
                  QMAKE_CLEAN = $${PROJECT_FILE_NAME}.ds
                  INCLUDEPATH = /usr/local/include
                  ../../pub/external/include
                  ../../pub/include
                  ../../visual_studio/Debug32
                  ../../common
                  LIBS += -L"../../pub/external/lib" -lFreeImage
                  SOURCES += ../../common/CTiffWriter.cpp
                  ../../common/CommonTWAIN.cpp
                  CommonDS.cpp
                  CScanner_FreeImage.cpp
                  CTWAINDS_Base.cpp
                  CTWAINDS_FreeImage.cpp
                  DSMInterface.cpp
                  TWAINContainer.cpp
                  TWAINContainerFix32.cpp
                  TWAINContainerFrame.cpp
                  TWAINContainerInt.cpp
                  CTWAINDS_Sample1.cpp
                  TWAIN_UI.cpp
                  TWAINContainerString.cpp
                  TWAINContainerFix32Range.cpp
                  TWAINContainerBool.cpp
                  QT_UI.cpp
                  Qt_MainForm.cpp
                  Qt_About.cpp
                  Qt_ProfileName.cpp
                  HEADERS += ../../common/Common.h
                  ../../common/CommonTWAIN.h
                  ../../common/CTiffWriter.h
                  CScanner_FreeImage.h
                  CTWAINDS_Base.h
                  CTWAINDS_FreeImage.h
                  CommonDS.h
                  DSMInterface.h
                  TWAINContainerFix32.h
                  TWAINContainerFrame.h
                  TWAINContainer.h
                  TWAINContainerInt.h
                  CTWAINDS_Sample1.h
                  TWAIN_UI.h
                  TWAINContainerString.h
                  TWAINContainerFix32Range.h
                  TWAINContainerBool.h
                  QT_UI.h
                  Qt_MainForm.h
                  Qt_About.h
                  Qt_ProfileName.h
                  ui_About.h
                  ui_MainForm.h
                  ui_About.h
                  TEMPLATE = lib
                  CONFIG += warn_on
                  debug
                  x86 ppc

                  QMAKE_BUNDLE_EXTENSION = ds

                  this project doesn't need any QT libs.

                  QMAKE_LIBS_QT =
                  QMAKE_LIBS_QT_THREAD =
                  FORMS += MainForm.ui
                  About.ui
                  ProfileName.ui
                  RESOURCES += qtresources.qrc

                  unix|win32: LIBS += -lshell32

                  M Offline
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                  mrjj
                  Lifetime Qt Champion
                  wrote on 21 Dec 2017, 20:26 last edited by
                  #29

                  @bhim
                  Its not in build folder?

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                  • B Offline
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                    bhim
                    wrote on 21 Dec 2017, 20:27 last edited by
                    #30

                    Its there, but its in dll extension, its supposed to be .ds extension.

                    M 1 Reply Last reply 21 Dec 2017, 20:27
                    0
                    • B bhim
                      21 Dec 2017, 20:27

                      Its there, but its in dll extension, its supposed to be .ds extension.

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                      mrjj
                      Lifetime Qt Champion
                      wrote on 21 Dec 2017, 20:27 last edited by
                      #31

                      @bhim
                      What is a .ds file ?

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                      • B Offline
                        B Offline
                        bhim
                        wrote on 21 Dec 2017, 20:52 last edited by
                        #32

                        ds is Twain data source, OR Twain Driver. See below from my pro file, based on this it should have generated

                        TWAIN datasources end with a .ds instead of .so

                        QMAKE_POST_LINK = cp
                        $(TARGET)
                        $${PROJECT_FILE_NAME}.ds
                        ds.path = /usr/local/lib/twain/FreeImage
                        ds.files = $${PROJECT_FILE_NAME}.ds
                        TWAIN_logo.png
                        INSTALLS += ds
                        QMAKE_CLEAN = $${PROJECT_FILE_NAME}.ds

                        M 1 Reply Last reply 21 Dec 2017, 20:55
                        0
                        • B bhim
                          21 Dec 2017, 20:52

                          ds is Twain data source, OR Twain Driver. See below from my pro file, based on this it should have generated

                          TWAIN datasources end with a .ds instead of .so

                          QMAKE_POST_LINK = cp
                          $(TARGET)
                          $${PROJECT_FILE_NAME}.ds
                          ds.path = /usr/local/lib/twain/FreeImage
                          ds.files = $${PROJECT_FILE_NAME}.ds
                          TWAIN_logo.png
                          INSTALLS += ds
                          QMAKE_CLEAN = $${PROJECT_FILE_NAME}.ds

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                          mrjj
                          Lifetime Qt Champion
                          wrote on 21 Dec 2017, 20:55 last edited by
                          #33

                          @bhim
                          Ok but a SO file is a DLL.
                          so being on windows, i wonder if the DS is just a DLL.

                          Is that to load into the sample project ?

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                          • B Offline
                            B Offline
                            bhim
                            wrote on 21 Dec 2017, 22:27 last edited by
                            #34

                            I change the DLL extension to ds and replaced with original DS file. It dd not work, it was not even detected. I think if somehow i could emit a .ds file , it will work. Below is the project property of visual studio project which generated original ds file

                            0_1513895238850_1e6725b3-35b3-43c1-8cc2-32666e9a61cf-image.png

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                            • M Offline
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                              mrjj
                              Lifetime Qt Champion
                              wrote on 21 Dec 2017, 22:36 last edited by
                              #35

                              Sorry i have no idea what / how a ds file should be produced.
                              Site says
                              copy TWAINDS_Sample[32|64].ds to /Windows/twain_[32|64]/sample2
                              so it looks like a DLL. but sadly i cant find out more.

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                              • B Offline
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                                bhim
                                wrote on 21 Dec 2017, 23:16 last edited by
                                #36

                                Coding wise everything looks fine, I am trying to debug ds file using a sample connection application. But connection application itself is giving below error. Can you please help.

                                0_1513898201339_529f0520-4c9a-47d1-9056-e064c3587660-image.png

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                                • M Offline
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                                  mrjj
                                  Lifetime Qt Champion
                                  wrote on 22 Dec 2017, 07:16 last edited by
                                  #37

                                  HI
                                  The UNUSED ARG ?

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                                  0

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