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Plugin loading failed

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  • N nhatquang

    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,

    jsulmJ Online
    jsulmJ Online
    jsulm
    Lifetime Qt Champion
    wrote on 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
    0
    • jsulmJ jsulm

      @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 last edited by
      #5

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

      mrjjM 1 Reply Last reply
      0
      • N nhatquang

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

        mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on 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
        2
        • Vinod KuntojiV Vinod Kuntoji

          @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 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
          • mrjjM mrjj

            @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 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?

            mrjjM 1 Reply Last reply
            0
            • N nhatquang

              @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?

              mrjjM Offline
              mrjjM Offline
              mrjj
              Lifetime Qt Champion
              wrote on 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
              • mrjjM mrjj

                @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 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?

                mrjjM jsulmJ 2 Replies Last reply
                0
                • N nhatquang

                  @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?

                  mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by mrjj
                  #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

                    @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?

                    jsulmJ Online
                    jsulmJ Online
                    jsulm
                    Lifetime Qt Champion
                    wrote on 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

                    mrjjM 1 Reply Last reply
                    4
                    • jsulmJ jsulm

                      @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.

                      mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on last edited by
                      #13

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

                      jsulmJ 1 Reply Last reply
                      0
                      • mrjjM mrjj

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

                        jsulmJ Online
                        jsulmJ Online
                        jsulm
                        Lifetime Qt Champion
                        wrote on 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
                        • jsulmJ jsulm

                          @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 last edited by
                          #15

                          I'm stuck ! I can't do successfully

                          1 Reply Last reply
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