Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. Mobile and Embedded
  4. only one QPushButton with QWidget works
Forum Updated to NodeBB v4.3 + New Features

only one QPushButton with QWidget works

Scheduled Pinned Locked Moved Unsolved Mobile and Embedded
39 Posts 5 Posters 5.4k Views 3 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #6

    There's no Qt debugger as there is no Qt compiler.

    As for the runtime warning, they are printed on stdout.

    Interested in AI ? www.idiap.ch
    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

    1 Reply Last reply
    0
    • K-StrK Offline
      K-StrK Offline
      K-Str
      wrote on last edited by K-Str
      #7

      @SGaist
      yes there are some warnings:

      16:15:13: Checking available ports...
      16:15:13: Found 101 free ports.
      16:15:13: Starting gdbserver --multi :10000...
      16:15:13: Debugging starts
      SSH is enabled and the default password for the 'pi' user has not been changed.
      This is a security risk - please login as the 'pi' user and type 'passwd' to set a new password.
      
      1689
      Listening on port 10000
      Remote debugging from host 192.168.180.65
      Process /opt/Teleskop/bin/Teleskop created; pid = 1707
      Could not load shared library symbols for 3 libraries, e.g. /usr/local/qt5pi/lib/libQt5Widgets.so.5.
      Use the "info sharedlibrary" command to see the complete listing.
      Do you need "set solib-search-path" or "set sysroot"?Could not load shared library symbols for 3 libraries, e.g. /usr/local/qt5pi/plugins/platforms/libqeglfs.so.Use the "info sharedlibrary" command to see the complete listing.
      Do you need "set solib-search-path" or "set sysroot"?
      Could not load shared library symbols for /usr/local/qt5pi/plugins/egldeviceintegrations/libqeglfs-brcm-integration.so.Do you need "set solib-search-path" or "set sysroot"?
      Could not load shared library symbols for /usr/local/qt5pi/plugins/imageformats/libqgif.so.Do you need "set solib-search-path" or "set sysroot"?
      Could not load shared library symbols for /usr/local/qt5pi/plugins/imageformats/libqico.so.Do you need "set solib-search-path" or "set sysroot"?
      Could not load shared library symbols for /usr/local/qt5pi/plugins/imageformats/libqjpeg.so.Do you need "set solib-search-path" or "set sysroot"?
      Unable to query physical screen size, defaulting to 100 dpi.To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
      
      

      Maybe there is a failure.

      1 Reply Last reply
      0
      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #8

        Are you running this application on a remote device ?

        If so, you should rather make it run first on your desktop machine and then run on the device.

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

        1 Reply Last reply
        0
        • K-StrK Offline
          K-StrK Offline
          K-Str
          wrote on last edited by
          #9

          @SGaist
          I added the Kit for Desktop Qt 5.12.3 GCC 64 Bit-
          It doesn't work. This is the error:

          17:06:03: Running steps for project Teleskop...
          17:06:03: Configuration unchanged, skipping qmake step.
          17:06:03: Starting: "/usr/bin/make" -j4
          g++ -Wl,-rpath,/home/kurt/Qt/5.12.3/gcc_64/lib -o Teleskop main.o mainwindow.o moc_mainwindow.o   -L/home/kurt/Qt/5.12.3/gcc_64/lib -lQt5Widgets -lQt5Gui -lQt5Core -lGL -lpthread   
          /usr/bin/ld: cannot find -lGL
          Makefile:263: recipe for target 'Teleskop' failed
          collect2: error: ld returned 1 exit status
          make: *** [Teleskop] Error 1
          17:06:03: The process "/usr/bin/make" exited with code 2.
          Error while building/deploying project Teleskop (kit: Desktop Qt 5.12.3 GCC 64bit)
          When executing step "Make"
          17:06:03: Elapsed time: 00:00.
          

          I think I have to add the module GL. Is this correct? But where can I find this?

          1 Reply Last reply
          0
          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #10

            The missing GL error has been asked about many times already, you have to install the OpenGL development package from your distribution.

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

            1 Reply Last reply
            1
            • K-StrK Offline
              K-StrK Offline
              K-Str
              wrote on last edited by
              #11

              @SGaist ,
              thanks for this hint I will add the kit for Ubuntu again tomorrow.

              1 Reply Last reply
              0
              • K-StrK Offline
                K-StrK Offline
                K-Str
                wrote on last edited by K-Str
                #12

                @SGaist
                Yes I try to run it remotely on a raspberry.
                Now I have installed the kit for the host PC. Yes it works perfect on the host.
                What can I do to make it working on a remote raspberry? I use /usr/bin/gdb-multiarch for debugging remotely on the raspberry. Is this ok

                1 Reply Last reply
                0
                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #13

                  Do you mean that your application is working fine on your desktop and still not on your target ?

                  Interested in AI ? www.idiap.ch
                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                  1 Reply Last reply
                  0
                  • K-StrK Offline
                    K-StrK Offline
                    K-Str
                    wrote on last edited by K-Str
                    #14

                    @SGaist yes
                    if the target is the linux host (ubuntu desktop) the application works fine.
                    If the target is the raspberry it does not work.
                    What about this info:

                    Could not load shared library symbols for 3 libraries, e.g. /usr/local/qt5pi/lib/libQt5Widgets.so.5.
                    

                    Is there something missing?
                    Maybe somebody knows more about this problem.

                    1 Reply Last reply
                    0
                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #15

                      What do you get if you call ldd on that file ?

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                      1 Reply Last reply
                      0
                      • K-StrK Offline
                        K-StrK Offline
                        K-Str
                        wrote on last edited by
                        #16

                        @SGaist , where must I run ldd?
                        On the linux host PC or on the raspberry?

                        1 Reply Last reply
                        0
                        • K-StrK Offline
                          K-StrK Offline
                          K-Str
                          wrote on last edited by K-Str
                          #17

                          @SGaist ;
                          I will check it tomorrow

                          SGaistS 1 Reply Last reply
                          0
                          • K-StrK K-Str

                            @SGaist ;
                            I will check it tomorrow

                            SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #18

                            @k-str said in only one QPushButton with QWidget works:

                            Sorry, I made a mistake

                            What do you mean with that ?

                            Interested in AI ? www.idiap.ch
                            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                            1 Reply Last reply
                            0
                            • K-StrK Offline
                              K-StrK Offline
                              K-Str
                              wrote on last edited by
                              #19

                              @SGaist ,
                              yesterday I had some trouble with my computer network and I couldn't write a post correcttly.
                              Here the output of lcc:
                              0_1567681332209_LCC_Teleskop.JPG
                              Do yoe need the output also when I run lcc on the on the Linux host?

                              1 Reply Last reply
                              0
                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #20

                                Looks good. What is the exact error message you're getting when starting your application ?

                                Interested in AI ? www.idiap.ch
                                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                1 Reply Last reply
                                0
                                • K-StrK Offline
                                  K-StrK Offline
                                  K-Str
                                  wrote on last edited by K-Str
                                  #21

                                  @SGaist ,
                                  there are no errors when I run the application. Only warnings during startup as I wrote eight days ago.
                                  Now I install everything new because I have some big troubles with the network running a virtual machine (=Hyper-V). I install it now on oracles virtual box.
                                  I will see what happens after this.
                                  It's crazy!!
                                  Now I have an other problem after a new installation:
                                  It seems to be a configuration failure:
                                  When I start the application I get a problem.
                                  What means this? does it miss an egl module?

                                  Process /opt/TestWidget/bin/TestWidget created; pid = 2877
                                  qt.qpa.egldeviceintegration: Failed to load EGL device integration "eglfs_brcm"
                                  EGL library doesn't support Emulator extensions
                                  

                                  and a window appears
                                  0_1567779970953_Bildschirmfoto vom 2019-09-06 16-23-51.png

                                  I find no real help in the internet.
                                  I use a MPI3508 LCD HDMI display on my raspberry3.
                                  Maybe my current configuration cannot handle it.
                                  Please has somebody an answer?

                                  1 Reply Last reply
                                  0
                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #22

                                    Do you mean that you have that error in a virtual machine ?

                                    Interested in AI ? www.idiap.ch
                                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                    1 Reply Last reply
                                    0
                                    • K-StrK Offline
                                      K-StrK Offline
                                      K-Str
                                      wrote on last edited by K-Str
                                      #23

                                      @SGaist ,
                                      no I think something went wrong during the installation.
                                      What mmeans this:
                                      Failed to load EGL device integration "eglfs_brcm"

                                      1 Reply Last reply
                                      0
                                      • SGaistS Offline
                                        SGaistS Offline
                                        SGaist
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #24

                                        It's getting a bit fuzzy here. You seem to have issues both with your desktop machine and RaspberryPi.

                                        Can you do a small summary of what is going on and where exactly ?

                                        Interested in AI ? www.idiap.ch
                                        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                        1 Reply Last reply
                                        0
                                        • K-StrK Offline
                                          K-StrK Offline
                                          K-Str
                                          wrote on last edited by K-Str
                                          #25

                                          @SGaist , hello to all;
                                          I'm sorry for the delay, but I made some investigation.
                                          It seems to have just a little problem:
                                          When I start the application local on the terminal then I first have to write

                                          export  DISPLAY:=0
                                          

                                          Then it works with a warning

                                          libEGL warning: DRI2: failed to authenticate
                                          

                                          Is there a way to add this command

                                          export DISPLAY=:0
                                          

                                          automaticially before I run the application?

                                          jsulmJ 1 Reply Last reply
                                          0

                                          • Login

                                          • Login or register to search.
                                          • First post
                                            Last post
                                          0
                                          • Categories
                                          • Recent
                                          • Tags
                                          • Popular
                                          • Users
                                          • Groups
                                          • Search
                                          • Get Qt Extensions
                                          • Unsolved