Snap7 Undefined Reference to TS7Client::TS7Client()

[SGaist]

Which option are you currently using ?

Embedding the library or linking to it ?

If the later, did you compile it with the same compiler used for Qt ?

[ZekDe]

I didnt understan excatly what you mean.I wanna use link the .lib so that I will use just 3 files .h,.cpp,.lib but I suppose I have to use .dll as well in same file with .lib adding exectuble folder(I doesnt work,like you see Qt create a debug file and .exe after the compile )

[ZekDe]

Okay okay, when I create the this object in mainwindow.h ,this is being creating but I couldn't reach it from in mainwinbdow.cpp

into mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include "snap7.h"


namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);

    void CliCompletion(void *usrPtr, int opCode, int opResult);
    void SysSleep(uint32_t Delay_ms);
    bool Check(int Result, const char * function);
    void MultiRead();
    void ListBlocks();
    void OrderCode();
    void CpuInfo();
    void CpInfo();
    void UnitStatus();
    void UploadDB0();
    void AsCBUploadDB0();
    void AsEWUploadDB0();
    void AsPOUploadDB0();
    void ReadSzl_0011_0000();
    bool CliConnect();
    void CliDisconnect();
    void PerformTests();
    void Summary();
    //void hexdump(void *mem, unsigned int len);

    ~MainWindow();

private:
    Ui::MainWindow *ui;

         TS7Client *Client = new TS7Client();

         uint8_t Buffer[65536]; // 64 K buffer
         int SampleDBNum = 1000;

         char *Address = (char*)"192.168.0.1" ;     // PLC IP Address
         int Rack=0,Slot=1; // Default Rack and Slot

         int ok = 0; // Number of test pass
         int ko = 0; // Number of test failure

         bool JobDone=false;
         int JobResult=0;
};

#endif // MAINWINDOW_H

into .cpp```
//your code here

[ZekDe]

I am missing something ,I couldnt get to used C++ yet

[ZekDe]


[ZekDe]

When I add the source files ,it worked properly.Also this lines is being added,I dont know why

win32:LIBS += C:\Qt\Tools\mingw530_32\i686-w64-mingw32\lib\libws2_32.a
win32:LIBS += C:\Qt\Tools\mingw530_32\i686-w64-mingw32\lib\libwinmm.a

[mrjj]

@ZekDe
its runtime libs from the compiler.

[ZekDe]

well, how can I reliase it if I use any libs

[mrjj]

@ZekDe
In what way realize ?
It surely uses its runtime files.

[ZekDe]

when I create a new project there are no these lines.A guy give me a sample project and these lines were in it.
If he dont give me a project .How will I add these line?

[ZekDe]

Hmm I have looked in Makefile and I encounter this line,
LIBS = -L"$(MINGW)/lib" -static-libgcc --no-export-all-symbols --add-stdcall-alias $(MINGW)/lib/libws2_32.a $(MINGW)/lib/libwinmm.a $(MINGW)/lib/gcc/mingw32/$(MINREL)/libstdc++.a
INCS = -I"$(MINGW)/include" -I"../../../src/sys" -I"../../../src/core" -I"../../../src/lib"

Previously I realised , there is no files in mingw32 5.3.0 but libstdc++ is available
Also existing a this writing in webside, "Libstdc++ are statically linked, so you don’t need to distribute them with your software" I suppose it means that.
I do not have enough knowledge.

[mrjj]

Hi
Statically linked means it is put inside and hence requires no DLL to
be included with the app.