How to invoke main function of different project

[Sherlin N G]

When a button is clicked in the ui how do i invoke main of other project? Is it possible?

[JonB]

@Sherlin-N-G
The "other project" is a completely separate, standalone executable?

[Sherlin N G]

it is a standalone project.

[JonB]

@Sherlin-N-G
So if it produces a standalone executable, surely all you can do is invoke that executable (as an OS command)? Unless you want to change its code to refactor it (e.g. into a standalone library) such that you call its functionality through some function rather than main.

[jsulm]

@Sherlin-N-G You can't call main of another executable. You need to start it as own process. Take a look at http://doc.qt.io/qt-5/qprocess.html

[yuvaram]

@Sherlin-N-G
Make a executable of the project which you want to call other main function.
Call the executable using QProcess

QString program = "./path/to/Qt/examples/widgets/analogclock";
QStringList arguments;
arguments << "-style" << "fusion";

QProcess *myProcess = new QProcess(parent);
myProcess->start(program, arguments);

[Sherlin N G]

Hi, Thanks for the reply.Problem solved

[yuvaram]

@Sherlin-N-G
change the post to solved state