stop the c++ program and start another one

[gopython]

Hi all,

OS: Windows XP
C++: Microsoft Visual C++ 2005

I am wondering if it is possible to kill the C++ program after calling another program (i.e. .bat). I did a simple test and check the "Windows Task Manager". After the exe run the .bat the exe is still there until the .bat finished running. Is that possible to kill the .exe after the .bat is called.

// Filename:test.cpp
#include <iostream>
 
int main()
{
    std::cout << "Calling run.bat";
    std::cout << "\n";
    system ("stage\\run.bat");
 
    return 0;
}

[JosAH]

The system(" ... ") call is a synchronous call, i.e. it won't return until the called
shell has finished. Have a look at threads but I'm afraid (from the top of my head)
that all child processed (including the system(" ..." ) call) will be stopped as
soon as the main thread finishes; check it out.

Maybe a system(" ... &") call can help out (Unix specific) or a
system("start ...") call (Windows specific).

kind regards,

Jos

[gopython]

Thank you for the pointer.

I did some research on the net. And I come across function called "execlp". But I don't have any success using this function. I really appreciate if someone can point me to the right direction. Thank you.

[Banfa]

Try using CreateProcess.

That is the WIN32 API function for starting applications.

[Savage]

Thank you for the pointer.

I did some research on the net. And I come across function called "execlp". But I don't have any success using this function. I really appreciate if someone can point me to the right direction. Thank you.

Function execlp(and spawnlp which is simmiliar) is used to run a *.exe programm and it can't run *.bat.If *.bat is specifed as a program name and perror is used, it will submit error like:

exec error:Exec format error.

But it does what u recuire with *.exe files.

Function CreateProcess,which admin Banfa specifed, does what u want,but I'm
not sure that it can run *.bat(Never tryed that).

I hope that it will work!!!

:D

Savage

[Banfa]

Function execlp(and spawnlp which is simmiliar) is used to run a *.exe programm and it can't run *.bat.If *.bat is specifed as a program name and perror is used, it will submit error like:

Function CreateProcess,which admin Banfa specifed, does what u want,but I'm
not sure that it can run *.bat(Never tryed that).

Remember you can always "run" a batch file by actually running a command line processor (cmd.exe) with the batch file on its command line or using the start command Jos mentioned earlier.

[Savage]

Remember you can always "run" a batch file by actually running a command line processor (cmd.exe) with the batch file on its command line or using the start command Jos mentioned earlier.

Yes,and that would be the simplest solution for our OP.

So if we run cmd.exe with execlp or spawnlp it will overwrite it's parent and start
instead that *.bat file when specifed in command line.


Savage