Where is QApplication constructor and QApplication.exe is defined

Question

Hi

I am trying to build a simple application of QT using make file.

#include <QtWidgets/QApplication>

int main(int argc, char **argv)
{
QApplication app (argc, argv);
return app.exec();
}

I believe my main file is correct.

I have given include file directory in make file and hence it is not complaining about QtWidgets/QApplication include. However, It throws linker error.

Which lib / dll file implements the exec and QApplication so that I can give that lib or dll to compiler? Where can I find these details ?

Answer 1

While going through the docs for this https://wiki.qt.io/Qt_for_Beginners

I was able to create a working prototype myself.

I just build it from the source myself. https://github.com/qt/qt5
The documentation is available there.

In your case maybe you're IDE is handling package management.

Answer 2

I don't want to use any ide and qt is also not installed on my system. I have just all the required libs and dlls and includes.

I am trying to use cl.exe from visual studio and getting linker error as I don't know which lib defines qapplicatoon