Scan system processes and get PID of a process

Scan all processes of the system

1#include <stdio.h>2#include <windows.h>3#include <tlhelp32.h>4 5 intScan ()6 {7HANDLE Hprocessshap =NULL;8PROCESSENTRY32 pe32 = {0};9Hprocessshap = CreateToolhelp32Snapshot (Th32cs_snapall,0);Ten  One     if(Hprocessshap = =Invalid_handle_value) A     { -printf"\ncreatetoolhelp32snapshot () failed:%d", GetLastError ()); -         return 1; the     } -  -Pe32.dwsize =sizeof(PROCESSENTRY32); -  +     if(Process32First (Hprocessshap, &pe32)) -     { +          Do A         { at wprintf (pe32.szexefile); -printf"\ n"); -         } -          while(Process32Next (Hprocessshap, &pe32)); -     } -     Else in     { -printf"\nprocess32first () failed:%d", GetLastError ()); to     } + CloseHandle (HPROCESSSHAP); -     return 0; the } *  $ intMainintargcChar*argv)Panax Notoginseng { - Scan (); the     return 0; +}

gets the PID of a process

Sometimes when working on a process in a system, we need to get the PID of the program as a parameter. One of these methods is, of course, in the details of the task Manager, and the other is to get the PID of the process directly using the code.

1 intGetpid (wchar_t *name)2 {3HANDLE Hprocessshap =NULL;4     //The structure that holds the snapshot process information5PROCESSENTRY32 pe32 = {0}; 6     //Create a snapshot of the system's processes to scan7Hprocessshap = CreateToolhelp32Snapshot (Th32cs_snapall,0);8     if(Hprocessshap = =Invalid_handle_value)9     {Tenprintf"\ncreatetoolhelp32snapshot () failed:%d", GetLastError ()); One         return 1; A     } -     //set the size of the structure body -Pe32.dwsize =sizeof(PROCESSENTRY32); the     //Process32First get the handle to the first process -     if(Process32First (Hprocessshap, &pe32)) -     { -         //the process name that matches the input +          Do -         { +             if(!wcscmp (name, pe32.szexefile)) A             { at                 return(int) Pe32.th32processid; -             } -         } -          while(Process32Next (Hprocessshap, &pe32)); -     } -     Else in     { -printf"\nprocess32first () failed:%d", GetLastError ()); to     } + CloseHandle (HPROCESSSHAP); -     return 0; the}

Scan system processes and get PID of a process