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How to run a C++ code in Qt?

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  • RelaR Offline
    RelaR Offline
    Rela
    wrote on last edited by
    #93

    Could you please tell your ideas about my previous question posted 6 days ago?

    1 Reply Last reply
    0
    • jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #94

      Please take a look at error messages you get:

      "\\home.org.a\ab\data\Documents\Qt projects\PS7\main.cpp:1060: error: C2664: 'void PSError(char *)': cannot convert argument 1 from 'const char [37]' to 'char *'' in main.cpp file.
      

      Now check the code lines mentioned in these error messages. Error message you posted tells you that you are passing a const char array to a function that takes a non-const char*. This is not allowed.

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

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      • RelaR Offline
        RelaR Offline
        Rela
        wrote on last edited by Rela
        #95

        But previously it did not give that error, when I did the same with different versions of Qt5.5 and MCVS 2013. The number of errors

         cannot convert argument 1 from 'const char [37]' to 'char *''
        

        is about 12-13.
        However, when I change the

        #include <tchar.h>
        

        to

        #inclu```de <char.h>
        

        in "stdafx.h" file, the error decreased to two including

        \\home.org.a\ab\data\Documents\Qt projects\PS7\stdafx.h:11: error: C1083: Cannot open include file: 'char.h': No such file or directory
        

        errors.

        the_T 1 Reply Last reply
        0
        • RelaR Offline
          RelaR Offline
          Rela
          wrote on last edited by
          #96

          Could you please reply me?

          1 Reply Last reply
          0
          • RelaR Rela

            But previously it did not give that error, when I did the same with different versions of Qt5.5 and MCVS 2013. The number of errors

             cannot convert argument 1 from 'const char [37]' to 'char *''
            

            is about 12-13.
            However, when I change the

            #include <tchar.h>
            

            to

            #inclu```de <char.h>
            

            in "stdafx.h" file, the error decreased to two including

            \\home.org.a\ab\data\Documents\Qt projects\PS7\stdafx.h:11: error: C1083: Cannot open include file: 'char.h': No such file or directory
            

            errors.

            the_T Offline
            the_T Offline
            the_
            wrote on last edited by
            #97

            @Rela

            I don't remember that there is any char.h file.

            -- No support in PM --

            RelaR 1 Reply Last reply
            0
            • the_T the_

              @Rela

              I don't remember that there is any char.h file.

              RelaR Offline
              RelaR Offline
              Rela
              wrote on last edited by
              #98

              @the_
              Thanks, could you please read my last 6 previous posts?

              1 Reply Last reply
              0
              • RelaR Offline
                RelaR Offline
                Rela
                wrote on last edited by
                #99

                I did the same process to read the C++ project in Qt Creator, but this time the error is ```

                :-1: error: dependent '..\C++' does not exist.
                

                These are my C++ project files:
                O_PS.H
                stdafx.h
                targetver.h
                O_PS.CPP
                ps.cpp
                stdafx.cpp

                and I built a mainwindow Qt creator project (PS8) and copied all the files in the Qt folder except "ps.cpp" and "O_PS.CPP". The copied ones were added to the Qt project using "Add Existing Files". There are some differences including:
                1- The "ps.cpp" contains only ```

                #include "stdafx.h"
                

                which was added to "mainwindow.cpp".
                2- "O_PS.CPP" content was copied in the "main.cpp" of the Qt project. The Qt PS8 project now includes these files.

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                0
                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #100

                  I'm going to repeat myself but: why not just start from a clean Qt project, copy the code you need to run over in that project and go on ?

                  You have some core logic in that visual studio project but rather than just take the current working code and move it over to your Qt project with maybe some adaptations, you are trying to grab every bits of that project and mix it with your Qt project when there's no real need.

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

                  RelaR 1 Reply Last reply
                  0
                  • SGaistS SGaist

                    I'm going to repeat myself but: why not just start from a clean Qt project, copy the code you need to run over in that project and go on ?

                    You have some core logic in that visual studio project but rather than just take the current working code and move it over to your Qt project with maybe some adaptations, you are trying to grab every bits of that project and mix it with your Qt project when there's no real need.

                    RelaR Offline
                    RelaR Offline
                    Rela
                    wrote on last edited by
                    #101

                    @SGaist
                    I almost did the same, except I added the files "stdafx.h", "targetver.h", "stdafx.cpp", and "O_PS .H", which I think are needed. Because in this C++ code, only the "O_PSA .H" and "O_PS .CPP" include code.
                    The content of "stdafx.h" is #include```

                     "targetver.h"
                    #include <stdio.h>
                    #include <tchar.h>
                    

                    The content of "targetver.h" is ```

                    #include <SDKDDKVer.h>
                    

                    The content of "stdafx.cpp" is ```

                    #include "stdafx.h"
                    

                    And the content of "po .cpp" is ```

                    #include "stdafx.h"
                    

                    But, if you mean I just copy the "O_PSA .H" and "O_PS .CPP" codes in "mainwindow.h" and "main.cpp", (here is the Qt project it gives many errors, and I think because all cpp and header files are necessary.

                    1 Reply Last reply
                    0
                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #102

                      You have to fix the includes in your O_PS* files so add the missing #include <stdio.h>

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

                      RelaR 1 Reply Last reply
                      0
                      • SGaistS SGaist

                        You have to fix the includes in your O_PS* files so add the missing #include <stdio.h>

                        RelaR Offline
                        RelaR Offline
                        Rela
                        wrote on last edited by
                        #103

                        @SGaist
                        Do I add #include <stdio.h> to "mainwindow.h" ? I added to all files one by one , but the same errors happen.
                        Do I need to add #include "stdafx.h" or something else also?

                        1 Reply Last reply
                        0
                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #104

                          No, include them in your O_PS* files where suited.

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

                          RelaR 1 Reply Last reply
                          0
                          • SGaistS SGaist

                            No, include them in your O_PS* files where suited.

                            RelaR Offline
                            RelaR Offline
                            Rela
                            wrote on last edited by Rela
                            #105

                            @SGaist
                            I copied the "O_PSA .H" and "O_PS .CPP" code in the "mainwindow.h" and "main.cpp" of the Qt project respevtively. I did add ```

                            #include <stdio.h> 
                            

                            in either "mainwindow.h" or "main.cpp" files, but it gave the same errors

                            kshegunovK 1 Reply Last reply
                            0
                            • RelaR Rela

                              @SGaist
                              I copied the "O_PSA .H" and "O_PS .CPP" code in the "mainwindow.h" and "main.cpp" of the Qt project respevtively. I did add ```

                              #include <stdio.h> 
                              

                              in either "mainwindow.h" or "main.cpp" files, but it gave the same errors

                              kshegunovK Offline
                              kshegunovK Offline
                              kshegunov
                              Moderators
                              wrote on last edited by kshegunov
                              #106

                              @Rela
                              It must have taken you ages to delete those names ... Anyway, to use ostream, istream and other streams from the standard C++ library, you actually need to include the corresponding headers - stdio.h simply won't cut it. You need (depending on which classes you use) one of the *stream headers, e.g. #include <iostream>, #include <fstream> and so on. Additionally, these classes come in the std namespace so you'd need to expand that as well, for example.

                              #include <iostream>
                              
                              using namespace std;
                              
                              // Only now the istream and ostream classes are available.
                              

                              Kind regards.

                              Read and abide by the Qt Code of Conduct

                              RelaR 1 Reply Last reply
                              0
                              • kshegunovK kshegunov

                                @Rela
                                It must have taken you ages to delete those names ... Anyway, to use ostream, istream and other streams from the standard C++ library, you actually need to include the corresponding headers - stdio.h simply won't cut it. You need (depending on which classes you use) one of the *stream headers, e.g. #include <iostream>, #include <fstream> and so on. Additionally, these classes come in the std namespace so you'd need to expand that as well, for example.

                                #include <iostream>
                                
                                using namespace std;
                                
                                // Only now the istream and ostream classes are available.
                                

                                Kind regards.

                                RelaR Offline
                                RelaR Offline
                                Rela
                                wrote on last edited by Rela
                                #107

                                @kshegunov
                                There are

                                using namespace std;
                                #include <iostream>
                                #include <fstream>
                                #include <ostream>
                                

                                in the "main.cpp" already. I added ```

                                #include <stdio.h>
                                

                                in each file, but it gave the same error.

                                kshegunovK 1 Reply Last reply
                                0
                                • RelaR Rela

                                  @kshegunov
                                  There are

                                  using namespace std;
                                  #include <iostream>
                                  #include <fstream>
                                  #include <ostream>
                                  

                                  in the "main.cpp" already. I added ```

                                  #include <stdio.h>
                                  

                                  in each file, but it gave the same error.

                                  kshegunovK Offline
                                  kshegunovK Offline
                                  kshegunov
                                  Moderators
                                  wrote on last edited by kshegunov
                                  #108

                                  @Rela said:

                                  There are ... in the "main.cpp" already.

                                  But obviously these headers are not present in mainwindow.h, whence the compile errors. The compiler doesn't know heck about ostream when processing the mainwindow.h and it's whining ...

                                  Kind regards.

                                  Read and abide by the Qt Code of Conduct

                                  RelaR 1 Reply Last reply
                                  0
                                  • kshegunovK kshegunov

                                    @Rela said:

                                    There are ... in the "main.cpp" already.

                                    But obviously these headers are not present in mainwindow.h, whence the compile errors. The compiler doesn't know heck about ostream when processing the mainwindow.h and it's whining ...

                                    Kind regards.

                                    RelaR Offline
                                    RelaR Offline
                                    Rela
                                    wrote on last edited by
                                    #109

                                    @kshegunov
                                    Thanks. Do you know what else I can do except adding ```

                                    #include <stdio.h>
                                    

                                    to the "mainwindow.h"?

                                    kshegunovK 1 Reply Last reply
                                    0
                                    • RelaR Rela

                                      @kshegunov
                                      Thanks. Do you know what else I can do except adding ```

                                      #include <stdio.h>
                                      

                                      to the "mainwindow.h"?

                                      kshegunovK Offline
                                      kshegunovK Offline
                                      kshegunov
                                      Moderators
                                      wrote on last edited by
                                      #110

                                      @Rela

                                      Add the aforementioned headers to the mainwindow.h:

                                      #include <iostream>
                                      #include <fstream>
                                      #include <ostream>
                                      
                                      using namespace std;
                                      

                                      Otherwise the compiler will not know what ostream is.

                                      Read and abide by the Qt Code of Conduct

                                      RelaR 1 Reply Last reply
                                      0
                                      • kshegunovK kshegunov

                                        @Rela

                                        Add the aforementioned headers to the mainwindow.h:

                                        #include <iostream>
                                        #include <fstream>
                                        #include <ostream>
                                        
                                        using namespace std;
                                        

                                        Otherwise the compiler will not know what ostream is.

                                        RelaR Offline
                                        RelaR Offline
                                        Rela
                                        wrote on last edited by
                                        #111

                                        @kshegunov
                                        Done, but here are the errors cleaned again ;)

                                        kshegunovK 1 Reply Last reply
                                        0
                                        • RelaR Rela

                                          @kshegunov
                                          Done, but here are the errors cleaned again ;)

                                          kshegunovK Offline
                                          kshegunovK Offline
                                          kshegunov
                                          Moderators
                                          wrote on last edited by
                                          #112

                                          @Rela
                                          I'm sorry but I have no idea what's happening, with the deletions and without a complete code snippet this is just turning into a guessing game. Not to mention the preprocessor directives, whose expansions I have no way of deducing. The errors have obviously changed and they are at compile-time, so focus on that and try to resolve the type mismatches.

                                          Read and abide by the Qt Code of Conduct

                                          RelaR 1 Reply Last reply
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