Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 207
  • Last Modified:

Stopping parent process until child has completed?

Iam using Winexec API to execute a dos exe for formatting disk  and when i call this function that dos exe is running in a separate process(child) and parent is going to execute next stmt. but only when that child process(i.e formatting) has completed then only parent should go to next stmt. execution how to know whether child has completed execution so that i can go to next stmt.? I have seen Spawn and exec functions to run dos exe but they are not supported in Win3.11 Please help me? I want in Windows(16bit).
0
gspk
Asked:
gspk
1 Solution
 
gspkAuthor Commented:
please help me
0
 
hilitCommented:
Can you use CreateProcess instead? If your application is win95/NT try it and then you will be able to get the process information.
Then you should use _cwait which is the function that waits until a proces is over.
Good luck
Hilit
0
 
migelCommented:
Hi!
You can use IsTask() function inside message pump to determine is task runnig.
for example:
hDosTask = WinExec("Program to run", SW_SHOW);
if (hDosTask > 32)
{
while (TRUE)
{
if (IsTask(hDosTask))
    {
    MSG msg;
    while (PeekMessage(hWnd, &msg, NULL, NULL, PM_REMOVE))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }
else
    break;
}
// continue work...
}

0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
shaigCommented:
The function is called:      system()
0
 
gspkAuthor Commented:
no sense.......it makes
0
 
shaigCommented:
Yes it does (atleast to some of us).

the ::system() function documentation says:
The system function passes command to the command interpreter, which executes the string as an operating-system command.
please type         system          in your visual editor, then select the word and finally press F1 for more detailed information.
0
 
shaigCommented:
If this is not enough, here is some more information from the documantatin, that is self-explanetory:

/* SYSTEM.C: This program uses
 * system to TYPE its source file.
 */

#include <process.h>
void main( void )
{
   system( "type system.c" );
}
0
 
gspkAuthor Commented:
See iam using it in windows if you call system it goes in to dos mode for execution ok but the function returns immediately and goes to next stmt execution in windows and the dos exe runs in the background in a separate thread we can't know whether it is completed or not i want it at any cost. In we can't use functions like spawn or execv to check whether that task is ruunning or not as thay ar not supported in win3.11 and i want in win3.11
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Tackle projects and never again get stuck behind a technical roadblock.
Join Now