Solved

windows system call

Posted on 2006-10-27
8
277 Views
Last Modified: 2010-08-05
hello,

in my program I go system("some other program");
This works fine on Linux but on Windows a dialog box appears while it executes. What can I do to stop this appearing while remaining cross platform?

thanks
0
Comment
Question by:richardb_p
8 Comments
 
LVL 48

Expert Comment

by:AlexFM
ID: 17824678
Use CreateProcess function.
0
 

Author Comment

by:richardb_p
ID: 17825265
how is that cross platform?
0
 
LVL 22

Expert Comment

by:grg99
ID: 17825494
Use the "start" command, it has an option for hiding the window.

0
 
LVL 86

Accepted Solution

by:
jkr earned 250 total points
ID: 17826034
>>how is that cross platform?

Like that:

DWORD ExecuteAndWaitForCompletion   (   char*   pszCmd)
{
#ifdef WIN32 // Windows, use 'CreateProcess()'

   STARTUPINFO         si;
   PROCESS_INFORMATION pi;

   BOOL                bRes;

   DWORD               dwCode  =   0;

   ZeroMemory  (   &si,    sizeof  (   STARTUPINFO));

   si.cb           =   sizeof  (   STARTUPINFO);
   si.dwFlags      =   STARTF_USESHOWWINDOW;
   si.wShowWindow  =   SW_HIDE;

   bRes    =   CreateProcess   (   NULL,
                                   pszCmd,
                                   NULL,
                                   NULL,
                                   TRUE,
                                   NORMAL_PRIORITY_CLASS,
                                   NULL,
                                   NULL,
                                   &si,
                                   &pi
                               );

   WaitForSingleObject (   pihProcess, INFINITE);

   GetExitCodeProcess  (   pi.hProcess,    &dwCode);

   CloseHandle (   pi.hProcess);
   CloseHandle (   pi.hThread);

   return  (   dwCode);

#else

   return system ( pszCmd); // not Windows, use 'system()'

#endif
}
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Author Comment

by:richardb_p
ID: 17827301
grg99: where can I find information on the start command?

jkr: thanks, that will be my last resort. But system calls are pretty standard functionality so is there some kind of wrapper to do this?

I was expecting there would be a way to just disable/hide the terminal on windows so I could still use system(). I can get rid of the default console by compiling with -mwindows.
0
 
LVL 86

Expert Comment

by:jkr
ID: 17827611
>>But system calls are pretty standard functionality

... with all the side effects. 'system()'. IMO not a good idea to rely on it, since there is no guaranteed integration in the OS. I'd always use it as a last resort, even on UN*X there are APIs that I'd way prefer over 'system()'.
0
 

Author Comment

by:richardb_p
ID: 17832937
yeah I don't feel comfortable either, unfortuantely not my choice. I have to execute a compiled program (contents unknown to me) with different argument combinations and halt while it executes. This is fine on Debian and Solaris but Windows flashes that damn terminal. I'll give you the points jkr unless something comes up quickly.
0
 
LVL 86

Expert Comment

by:jkr
ID: 17844002
>>I have to execute a compiled program (contents unknown to me) with different argument combinations and
>>halt while it executes.

That's excactly what 'ExecuteAndWaitForCompletion()' does.

0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article will show you some of the more useful Standard Template Library (STL) algorithms through the use of working examples.  You will learn about how these algorithms fit into the STL architecture, how they work with STL containers, and why t…
C++ Properties One feature missing from standard C++ that you will find in many other Object Oriented Programming languages is something called a Property (http://www.experts-exchange.com/Programming/Languages/CPP/A_3912-Object-Properties-in-C.ht…
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.
The viewer will be introduced to the technique of using vectors in C++. The video will cover how to define a vector, store values in the vector and retrieve data from the values stored in the vector.

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now