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Plugin loading failed

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  • N nhatquang
    31 May 2017, 09:00

    Hi,
    I just install "qt-opensource-windows-x86-5.9.0" on Windows 10 x64. I build successfully a plugin "led-designer-plugin", i put "led-designer-plugin.dll" in "C:\Qt\Qt5.9.0\Tools\QtCreator\bin\plugins\designer". Then i open a GUI project in QtCreator 4.3. But I got this message in Plugin Information window:

    "Cannot load library C:\Qt\Qt5.9.0\Tools\QtCreator\bin\plugins\designer\led-designer-plugin.dll: %1 is not a valid Win32 application"
    Can you tell me what i was wrong to set the enviroment for QtCreator ?

    Thank you in advance,

    J Offline
    J Offline
    jsulm
    Lifetime Qt Champion
    wrote on 31 May 2017, 11:23 last edited by
    #4

    @nhatquang To add to @J-Hilk : the Qt and compiler version must be exactly the same and you have to build your plug-in in release mode.

    https://forum.qt.io/topic/113070/qt-code-of-conduct

    N 1 Reply Last reply 31 May 2017, 15:49
    0
    • J jsulm
      31 May 2017, 11:23

      @nhatquang To add to @J-Hilk : the Qt and compiler version must be exactly the same and you have to build your plug-in in release mode.

      N Offline
      N Offline
      nhatquang
      wrote on 31 May 2017, 15:49 last edited by
      #5

      @jsulm Thank you, could please tell me more in details. I'm new with QT.

      M 1 Reply Last reply 31 May 2017, 15:53
      0
      • N nhatquang
        31 May 2017, 15:49

        @jsulm Thank you, could please tell me more in details. I'm new with QT.

        M Offline
        M Offline
        mrjj
        Lifetime Qt Champion
        wrote on 31 May 2017, 15:53 last edited by mrjj
        #6

        @nhatquang
        Hi
        For plugins to be be loadable for Creator, it must be compiled with visual studio compiler.
        (on the windows platform. On linux is gcc)
        Mingw compiler won't work. ( on windows )

        Look in Help->About Creator
        alt text

        So to make plugins for this creator, you must be using vs 2015 32 bit to compile plugin
        and it should be in release mode.

        N 1 Reply Last reply 31 May 2017, 16:09
        2
        • V Vinod Kuntoji
          31 May 2017, 09:58

          @nhatquang ,

          Have you provided the dll path in .pro file?

          win32: LIBS += -L$$PWD/../../../../bin/ -ledDesigner
          DEPENDPATH += $$PWD/../../../../bin/

          N Offline
          N Offline
          nhatquang
          wrote on 31 May 2017, 15:56 last edited by
          #7

          @Vinod-Kuntoji said in Plugin loading failed:

          @nhatquang ,

          Have you provided the dll path in .pro file?

          win32: LIBS += -L$$PWD/../../../../bin/ -ledDesigner
          DEPENDPATH += $$PWD/../../../../bin/

          Thanks, i will try

          1 Reply Last reply
          0
          • M mrjj
            31 May 2017, 15:53

            @nhatquang
            Hi
            For plugins to be be loadable for Creator, it must be compiled with visual studio compiler.
            (on the windows platform. On linux is gcc)
            Mingw compiler won't work. ( on windows )

            Look in Help->About Creator
            alt text

            So to make plugins for this creator, you must be using vs 2015 32 bit to compile plugin
            and it should be in release mode.

            N Offline
            N Offline
            nhatquang
            wrote on 31 May 2017, 16:09 last edited by
            #8

            @mrjj said in Plugin loading failed:

            @nhatquang
            Hi
            For plugins to be be loadable for Creator, it must be compiled with visual studio compiler.
            (on the windows platform. On linux is gcc)
            Mingw compiler won't work. ( on windows )

            Look in Help->About Creator
            alt text

            So to make plugins for this creator, you must be using vs 2015 32 bit to compile plugin
            and it should be in release mode.

            Thank you, but I'm using VS2017 without QT addin support. It mean, i can't build plugin?

            M 1 Reply Last reply 31 May 2017, 19:47
            0
            • N nhatquang
              31 May 2017, 16:09

              @mrjj said in Plugin loading failed:

              @nhatquang
              Hi
              For plugins to be be loadable for Creator, it must be compiled with visual studio compiler.
              (on the windows platform. On linux is gcc)
              Mingw compiler won't work. ( on windows )

              Look in Help->About Creator
              alt text

              So to make plugins for this creator, you must be using vs 2015 32 bit to compile plugin
              and it should be in release mode.

              Thank you, but I'm using VS2017 without QT addin support. It mean, i can't build plugin?

              M Offline
              M Offline
              mrjj
              Lifetime Qt Champion
              wrote on 31 May 2017, 19:47 last edited by mrjj
              #9

              @nhatquang
              Hi. No there is 1 (one) exception. Vs 2017 should be compatible with VS2015
              as far as i understand.
              Should be 32 bit though.
              Remember to check your Creator just to be sure.

              N 1 Reply Last reply 1 Jun 2017, 05:31
              1
              • M mrjj
                31 May 2017, 19:47

                @nhatquang
                Hi. No there is 1 (one) exception. Vs 2017 should be compatible with VS2015
                as far as i understand.
                Should be 32 bit though.
                Remember to check your Creator just to be sure.

                N Offline
                N Offline
                nhatquang
                wrote on 1 Jun 2017, 05:31 last edited by
                #10

                @mrjj said in Plugin loading failed:

                @nhatquang
                Hi. No there is 1 (one) exception. Vs 2017 should be compatible with VS2015
                as far as i understand.
                Should be 32 bit though.
                Remember to check your Creator just to be sure.

                But QtCreator 4.3 built based on Qt 5.8, not 5.9. How can i solve?

                M J 2 Replies Last reply 1 Jun 2017, 06:27
                0
                • N nhatquang
                  1 Jun 2017, 05:31

                  @mrjj said in Plugin loading failed:

                  @nhatquang
                  Hi. No there is 1 (one) exception. Vs 2017 should be compatible with VS2015
                  as far as i understand.
                  Should be 32 bit though.
                  Remember to check your Creator just to be sure.

                  But QtCreator 4.3 built based on Qt 5.8, not 5.9. How can i solve?

                  M Offline
                  M Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on 1 Jun 2017, 06:27 last edited by mrjj 6 Jan 2017, 08:30
                  #11

                  @nhatquang
                  That should work anyway. Might not be correct.
                  Its the visual studio version that is important.
                  But vs2015 works as vs2017. ( for the first time ever)

                  update:
                  Seems i was too optimistic

                  Better to use 5.8 then for compiling the plugin.

                  1 Reply Last reply
                  3
                  • N nhatquang
                    1 Jun 2017, 05:31

                    @mrjj said in Plugin loading failed:

                    @nhatquang
                    Hi. No there is 1 (one) exception. Vs 2017 should be compatible with VS2015
                    as far as i understand.
                    Should be 32 bit though.
                    Remember to check your Creator just to be sure.

                    But QtCreator 4.3 built based on Qt 5.8, not 5.9. How can i solve?

                    J Offline
                    J Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on 1 Jun 2017, 06:52 last edited by
                    #12

                    @nhatquang Install Qt 5.8 and use it for your plug-in. You can keep Qt 5.9 ass QtCreator can handle many Qt versions.

                    https://forum.qt.io/topic/113070/qt-code-of-conduct

                    M 1 Reply Last reply 1 Jun 2017, 08:29
                    4
                    • J jsulm
                      1 Jun 2017, 06:52

                      @nhatquang Install Qt 5.8 and use it for your plug-in. You can keep Qt 5.9 ass QtCreator can handle many Qt versions.

                      M Offline
                      M Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on 1 Jun 2017, 08:29 last edited by
                      #13

                      @jsulm
                      So the 5.8 -> 5.9 will be too much version span for plugin to load ?

                      J 1 Reply Last reply 1 Jun 2017, 09:01
                      0
                      • M mrjj
                        1 Jun 2017, 08:29

                        @jsulm
                        So the 5.8 -> 5.9 will be too much version span for plugin to load ?

                        J Offline
                        J Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on 1 Jun 2017, 09:01 last edited by
                        #14

                        @mrjj I guess so. 5.8.0 -> 5.8.1 should be OK, but 5.8 -> 5.9 probably not.

                        https://forum.qt.io/topic/113070/qt-code-of-conduct

                        N 1 Reply Last reply 2 Jun 2017, 04:18
                        2
                        • J jsulm
                          1 Jun 2017, 09:01

                          @mrjj I guess so. 5.8.0 -> 5.8.1 should be OK, but 5.8 -> 5.9 probably not.

                          N Offline
                          N Offline
                          nhatquang
                          wrote on 2 Jun 2017, 04:18 last edited by
                          #15

                          I'm stuck ! I can't do successfully

                          1 Reply Last reply
                          0

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                          1 Jun 2017, 08:29

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