"system" function problem

Pofis · Post by **Pofis** » 2004-03-14 13:02

imagine something like this:

	string file;

	file = "some_random_file";
	temp = "file.exe " + file + " > temp.txt";
	system(temp);
	// then read temp.txt file, and do some stuff

but i get this error:

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client\Util.cpp(617) : error C2664: 'system' : cannot convert parameter 1 from '_STL::string' to 'const char *'
        No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called

is any function in STLport that i can use instead of "system"? because "file" must be defined as string.

Thanks in advance.

Pofis

Qbert · Post by **Qbert** » 2004-03-14 13:07

c_str() converts to a const char *.

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temp.c_str();

Pofis · Post by **Pofis** » 2004-03-14 13:16

thanks alot

Pofis

Pofis · Post by **Pofis** » 2004-03-15 14:53

Now i have another problem

, when executing the "system" function the command line opens and closes.
is there any way to run it on "background" ?

Thanks

Pofis

ivulfusbar · Post by **ivulfusbar** » 2004-03-15 17:01

using system() calls is among the worse things you can do. It opens up your system for an extream amount of abuse. Don't. Why do you need to use system-calls?

Pofis · Post by **Pofis** » 2004-03-16 07:42

I need it to use some "whois" program to get some info from it.
But seems the better way is to code it myself, instead of using an external program.

Pofis

earl · Post by **earl** » 2004-03-23 23:12

Ah, no. Use CreateProcess with CREATE_NO_WINDOW.

-earl-