c++ Start process with argument

Question

i know how to Start process with argument but im trying to create a program that uses this arguments. for example IE8 uses Process::Start( "IExplore.exe","google.com"); as a argument to open new window with url google.com. i want my program to use the argument are send it but i don't know how to get the the argument. like Process::Start( "myprogram.exe","TURE"); i want my program to get the ture thanks in advance Rami

Do you have an introductory C++ book? If you do, this is probably covered in one of the very first chapters. If you don't, you should consider getting one of the introductory books listed in [The Definitive C++ Book Guide and List](http://stackoverflow.com/questions/388242/the-definitive-c++-book-guide-and-list). — James McNellis, Aug 08 '10 at 20:55

score 4 · Answer 1 · answered Aug 08 '10 at 20:56

4

There are two choices, depending on what kind of program you are building.

If your program is a console mode program, use argc and argv parameters passed to your main().
If your program is a GUI mode program, use the pCmdLine parameter passed to your WinMain().

In either case, you can always use GetCommandLine().

answered Aug 08 '10 at 20:56

Greg Hewgill

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GetCommandLine() is windows-specific though and not portable, so using argc/argv is usually to be preferred. – Frank Osterfeld Aug 08 '10 at 21:23
That's correct. I thought it was pretty clear that the OP is using Windows. – Greg Hewgill Aug 08 '10 at 21:38

score 2 · Accepted Answer · answered Aug 08 '10 at 20:59

2

Assuming you write your entry point something like this:

int main(int argc, char* argv[])

Then argc is the number of arguments used to invoke your program and argv are the actual arguments.

Try it out:

#include <cstdio>

int main(int argc, char* argv[])
{
    for (int i = 0; i < argc; ++i)
        printf("%s\n", argv[i]);
}

answered Aug 08 '10 at 20:59

Travis Gockel

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If you're using the Windows entry point: `int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)`, then `lpCmdLine` is the command line and `nCmdShow` is the number of arguments. – Travis Gockel Aug 09 '10 at 02:08

score -2 · Answer 3 · edited Nov 19 '12 at 07:01

-2

#include <stdlib.h>
...
system("IExplore.exe google.com");

edited Nov 19 '12 at 07:01

Evgeny Lazin

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answered Aug 08 '10 at 20:55

Daniel

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c++ Start process with argument

3 Answers3