windows - checking the return value of a command executed using CreateProcess -

i using following code execute 'taskkill' command using createprocess() api.

startupinfo si; process_information pi;  zeromemory( &si, sizeof(si) ); si.cb = sizeof(si); zeromemory( &pi, sizeof(pi) );  tchar cmd[] = text("taskkill /f /t /im <exe name>");  if (createprocess(null, cmd, null, null, false, 0, null, null, &si, & pi)) {     // wait child process exit     dword waitforstatus = waitforsingleobject(pi.hprocess, 10000);      // close process , thread handles     closehandle(pi.hprocess);     closehandle(pi.hthread);      /* code throw exception based on return value waitforstatus */  } else {    /* code throw exception if createprocess() failed */ } 

what observed if process not running, task kill fails, crateprocess() not indicate error. how error createprocess?

is there possibilty process not killed taskkill /f switch?

createprocess responsible spawning/creating sub-process (in case taskkill.exe) successful, therefore returns true. it's code's responsibility monitor sub-process , when ends exit code. calling getexitcodeprocess before closing handle:

getexitcodeprocess(pi.hprocess, &ec); 

don't forget declare ec first (as dword). reverse order of handle closing (it's not mandatory, logically thread ends before process).