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WINEXEC - Wait for completion..

icampbe1
icampbe1 asked
on
Medium Priority
3,074 Views
Last Modified: 2012-05-04
In the 16 bit world we used to be able to wait for process terminations by calling GetModuleUsage.  Doesn't work in Win32...
How do I wait for a process (that I launched) to complete?  I want to synchronize some launches.  
I have looked at WaitForSingleObject and it doesn't seem to work.  Help.
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Commented:
Use CreateProcess to start the process, and WaitForSingleObject to wait for the process *handle*.


function ExecAndWait (AProgram : STRING) : BOOLEAN;
var
  StartupInfo : TStartupInfo;
  ProcessInfo : TProcessInformation;
begin
  FillChar (StartupInfo, SizeOf(StartupInfo), 0);
  StartupInfo.cb := SizeOf(StartupInfo);
  Result := CreateProcess (
    nil,
    PChar(AProgram),
    nil,
    nil,
    FALSE,
    0,
    nil,
    nil,
    StartupInfo,
    ProcessInfo);
  if Result then begin
    WaitForSingleObject(ProcessInfo.hProcess, INFINITE);
    CloseHandle(ProcessInfo.hProcess);
    CloseHandle(ProcessInfo.hThread);
  end;
end;


This function attempts to start the program. If it could not be started, return value will be FALSE. If it was started, the function waits for the process to terminate, and then returns TRUE.

Regards,

Erik.

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