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    Call for Presentations - Qt World Summit

    Solved how the functions of QanalogClockPlugin has been called in qwidgetplugins.

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    • H
      hjohn @mrjj last edited by

      @mrjj it meaans by using functions like name() and CreatWidget() ,plugin connect with that particular widget.
      if so,then if i want to add another widget then i have to just add new values in these two functions.

      QString widgetPlugins::domXml() const{}
      

      Is this function important to implement.?

      mrjj 1 Reply Last reply Reply Quote 0
      • mrjj
        mrjj Lifetime Qt Champion @hjohn last edited by

        @hjohn

        Hi
        All the functions showed must be implemented.
        Its not optional. All must be implemented.

        Its possible to have same plugin offer more than one widget.

        So if u have multiple widgets, there is a better way than
        creating multiple plugins for each widget.
        But you should wait with that unless one plugin is ok to handle :)

        H 1 Reply Last reply Reply Quote 1
        • H
          hjohn @mrjj last edited by

          @mrjj yeah thanks..one last question:
          As i know if we work with Widget if have to call

          Widget w;
          w.show();
          

          in main.cpp.
          But here in this example from qtdocument
          http://doc.qt.io/qt-5/qtdesigner-customwidgetplugin-example.html

          they are not including main.cpp file. Is this possible to run and display widget without main.cpp file

          mrjj 1 Reply Last reply Reply Quote 0
          • mrjj
            mrjj Lifetime Qt Champion @hjohn last edited by mrjj

            @hjohn
            Hi
            You can show a widget from anywhere.
            But to prevent out of scope issues, you should new it

            Widget* w = new Widget(this);
            w->show();

            But normally, a plugin for Designer DO NOT open other widgets.

            H 1 Reply Last reply Reply Quote 0
            • H
              hjohn @mrjj last edited by hjohn

              @mrjj said in how the functions of QanalogClockPlugin has been called in qwidgetplugins.:

              But normally, a plugin for Designer DO NOT open other widgets.

              In example there is only one widget.which is analogclock and that i want to open. In example there is no any w.show();command

              jsulm 1 Reply Last reply Reply Quote 0
              • jsulm
                jsulm Lifetime Qt Champion @hjohn last edited by

                @hjohn The application is showing the widget, the plug-in simply creates and returns an instance of it.

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

                1 Reply Last reply Reply Quote 0
                • H
                  hjohn last edited by hjohn

                  When run Example of http://doc.qt.io/qt-5/qtdesigner-customwidgetplugin-example.html
                  it generate
                  0_1529575055613_6b412866-740a-4bee-967c-13bf8d077d73-image.png

                  It means that This project is not created in the normal 'Qt-executable' kind format.Maybe because there is no main.cpp file.
                  what should i add or how to create project so that is get output as a analogClock .

                  jsulm 1 Reply Last reply Reply Quote 0
                  • jsulm
                    jsulm Lifetime Qt Champion @hjohn last edited by

                    @hjohn The main.cpp is part of QtDesigner.
                    So, it is a normal Qt application which loads plug-ins.
                    Again: a plug-in does NOT have a main.cpp, because it is a plug-in which is loaded by an application.
                    A plug-in is a library and a library does not have main.cpp.

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

                    H 1 Reply Last reply Reply Quote 1
                    • mrjj
                      mrjj Lifetime Qt Champion last edited by

                      Hi

                      To see the clock there is 2 options.

                      1:
                      Compile it as plugin and COPY the DLL to the Designer plugin folder in your Qt installation folder
                      ( or do make install )
                      Start Creator and then make project as normally with ui and
                      drag the analog clock to the new form.

                      2:
                      Dont use as plugin at all.
                      use the files analogclock.cpp/.h directly in a project
                      and simply NEW a analog clock and show it.

                      If you just started with Qt/programming. Designer plugins are maybe a bit
                      hard topic to start with :)

                      H 2 Replies Last reply Reply Quote 3
                      • H
                        hjohn @jsulm last edited by

                        @jsulm so how am I supposed to load this plugin?
                        http://doc.qt.io/qt-5/qtdesigner-customwidgetplugin-example.html

                        jsulm 1 Reply Last reply Reply Quote 1
                        • jsulm
                          jsulm Lifetime Qt Champion @hjohn last edited by

                          @hjohn Please check what @mrjj said.
                          There is one important thing: if you want to use this plug-in in QtDesigner you have to use exactly same Qt version and same compiler as were used to build QtDesigner!

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

                          1 Reply Last reply Reply Quote 0
                          • H
                            hjohn @mrjj last edited by

                            This post is deleted!
                            1 Reply Last reply Reply Quote 0
                            • H
                              hjohn @mrjj last edited by hjohn

                              @mrjj said in how the functions of QanalogClockPlugin has been called in qwidgetplugins.:

                              Start Creator and then make project as normally with ui and
                              drag the analog clock to the new form.

                              hey thanks.Can u elaborate this , It would be great help.

                              mrjj 1 Reply Last reply Reply Quote 0
                              • mrjj
                                mrjj Lifetime Qt Champion @hjohn last edited by mrjj

                                @hjohn
                                Well if on windows.
                                Check what your creator was compiled with.
                                You need to use same compiler and ca. same Qt version.
                                alt text
                                Install visual studio 2015 or 2017 with 32 bit !
                                This is a download from Microsoft site. Not Qt. ( not allowed)
                                ( you cannot use mingw)
                                Install the Qt for visual studio.
                                (mingw version cannot be used)
                                alt text

                                THE ABOVE IS MUST DO! else it wont work.

                                Then compile the plugin in RELEASE mode and 32 Bit. ( not 64)
                                Go to its build folder and copy the DLL to
                                alt text
                                C:\Qt\Tools\QtCreator\bin\plugins\designer
                                alt text

                                Start Creator and go to design mode
                                It will be in list to the left.
                                Scroll down to find it.

                                Note: this is considered intermediate level. :)

                                H 1 Reply Last reply Reply Quote 3
                                • H
                                  hjohn @mrjj last edited by

                                  Thank you very much @mrjj
                                  Now I got the clear idea what was the mistake I was making. And thanks a lot for the efforts you did, it was a huge help.Thank you.

                                  1 Reply Last reply Reply Quote 0
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