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  4. QextSerialPort missing data [solved]
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QextSerialPort missing data [solved]

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  • D Offline
    D Offline
    dbzhang800
    wrote on last edited by
    #2

    Hello,

    • Maybe you can give a try to QextSerialPort::Polling mode with a QTimer in order to see whether this issue still exists.

    • If you are using Qt SDK which does not contains a qwineventnotifier_p.h under the "include/QtCore/private" directory, QextWinEventNotifier will be used. If so, you can disable this by coping qwineventnofifier_p.h form src\corelib\kernel to that directory.

    Debao

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    • S Offline
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      simonCpp
      wrote on last edited by
      #3

      Hello Debao,
      Thanks for your replay.

      I tried to use the QextSerialPort::Polling mode with a QTimer before and it still miss data.

      About the qwineventnotifier_p.h file, I do have it at the “include/QtCore/private” directory.

      I got lack of understanding about what can cause this issue.
      Need help.

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      • S Offline
        S Offline
        simonCpp
        wrote on last edited by
        #4

        Need help anyone?

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        • D Offline
          D Offline
          dbzhang800
          wrote on last edited by
          #5

          Hi,

          I have submitted a bug several day ago, but seems that others do not come with the similar problem.

          http://code.google.com/p/qextserialport/issues/detail?id=121

          So I do not how to do with this.

          However, I found a similar issue at stackoverflow which has been solved.

          http://stackoverflow.com/questions/9713656/qextserialport-drops-data-on-windows-what-can-i-do-about-it

          You can give a try to it.

          Debao

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          • D Offline
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            Dantcho
            wrote on last edited by
            #6

            Hi all,

            want to use RS232 interface in QtCreator under windows at first,
            but i can not find a appropriate library.

            Do anybody have some information obout this?

            Thanks!

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            • K Offline
              K Offline
              koahnig
              wrote on last edited by
              #7

              welcome to devnet

              There are at least two different Qt-based implementations available. There have been already a number of threads concerning the topic. One of the implementations or also both are mentioned in following threads with following tags:
              "QExtSerialPort":http://qt-project.org/search/tag/qextserialport
              "QSerialDevice":http://qt-project.org/search/tag/qserialdevice
              [edit]
              A good start might be "this overview":http://qt-project.org/forums/viewthread/16949

              Vote the answer(s) that helped you to solve your issue(s)

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              • D Offline
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                Dantcho
                wrote on last edited by
                #8

                Thanks koahing very much,

                for the information, I knowed about "QExtSerialPort", but the QSerialDevice can be the right for my project.

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                • K Offline
                  K Offline
                  kuzulis
                  Qt Champions 2020
                  wrote on last edited by
                  #9

                  2 Dantcho

                  bq. but the QSerialDevice can be the right for my project

                  Instead of QSerialDevice - use "QtSerialPort":http://qt-project.org/wiki/QtSerialPort.
                  QSerialDevice is no longer growing (develop is freezing). His code was used as the basis QtSerialPort. Now QtSerialPort is a child.

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                  • D Offline
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                    Dantcho
                    wrote on last edited by
                    #10

                    Hi all,

                    I have to work with serial port and need to to install it on my computer.
                    What i have to do to install it?

                    I download this:
                    "qtplayground-qtserialport"

                    from here:
                    http://qt-project.org/wiki/QtSerialPort

                    but I am a little confuse because the installing guide is for linux not for windows.
                    How to install qt serial port on windows?

                    Thanks!

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                    • K Offline
                      K Offline
                      kuzulis
                      Qt Champions 2020
                      wrote on last edited by
                      #11

                      What an embarrassment? Where does it say that only for Linux?

                      Read "it":http://qt-project.org/wiki/QtSerialPort#b55bbb687c599634cc785869b9167639 again

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                      • D Offline
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                        Dantcho
                        wrote on last edited by
                        #12

                        Hi everybody,

                        i develop a programm and i want my widget do not be moved by the mouse(press and drag), the widget must stay always on the same position.
                        How can i do this?

                        Thanks?

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                        • D Offline
                          D Offline
                          Dantcho
                          wrote on last edited by
                          #13

                          Hi everybody,

                          I createt tree windows with the QtDesigner and from windows one of them start the another windows,
                          from windows one I have connection to the another windows (include the header files), so I include the the header file from the windows one to the another windows to have connection from every window to the window one, but wenn I declare filetype from windows one I get the following error.
                          "Fehler:ISO C++ forbids declaration of 'Com_Net' with no type"

                          this is a C++ error, but I include the header files :-(((.

                          Wath cann I do to solve this problem.

                          Here is the header file from the another windows.

                          @#ifndef DICS_H
                          #define DICS_H

                          #include <QWidget>
                          #include <QSizePolicy>
                          #include <QMoveEvent>

                          #include "com_net.h" bq. here include the header files from the windows one
                          #include "ui_com_net.h"

                          namespace Ui {
                          class DICS;
                          }

                          class DICS : public QWidget
                          {
                          Q_OBJECT

                          public:
                          explicit DICS(QWidget *parent = 0);
                          ~DICS();

                          private slots:
                          void on_External_Button_clicked();
                          void on_Internal_Button_clicked();
                          void on_PABX_Button_clicked();
                          void on_PAS_Button_clicked();

                          private:
                          Ui::DICS *ui;
                          Com_Net *active_com_net; bq. and here is the pointer declaration from windows one.
                          virtual void moveEvent(QMoveEvent *event);
                          };

                          #endif // DICS_H@

                          Thanks very much, for the help.

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                          • D Offline
                            D Offline
                            Dantcho
                            wrote on last edited by
                            #14

                            Hallo everybody,

                            i solved this problem with the type visibility.

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                            • M Offline
                              M Offline
                              mlong
                              wrote on last edited by
                              #15

                              Be sure and edit your original post title to add [Solved]. Thanks!

                              Software Engineer
                              My views and opinions do not necessarily reflect those of anyone -- living or dead, real or fictional -- in this universe or any other similar multiverse node. Void where prohibited. Your mileage may vary. Caveat emptor.

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                              • D Offline
                                D Offline
                                Dantcho
                                wrote on last edited by
                                #16

                                Dear community,

                                I work with the "qextserialport-1.2beta2" and all work well, but I have one problem, I want to send in binary mode, ones I can set is "port->setTextModeEnabled(false);" but the serial port stil interpret the data "o" like a null terminator and so cut the string after the every "0".
                                my question is it possible to send by "qextserialport" binary mode, or I have to look for a another way.

                                thanks for the answer, :-))).

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