冻结进程

#include <stdio.h>
#include <windows.h>
#include <tlhelp32.h>

int main(int argc,char *argv[])
{
 PROCESSENTRY32 pe32;
 pe32.dwSize=sizeof(pe32);
 unsigned long Pid;

 HANDLE hProcessSnap=::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);

 if(hProcessSnap==INVALID_HANDLE_VALUE)
 {
  printf("CreateToolhelp32Snapshot调用失败！");
  return -1;
 }

 BOOL b=::Process32First(hProcessSnap,&pe32);
 while(b)
 {
  if(!strcmp(pe32.szExeFile,argv[1]))
  {
   printf("Find %s ok!/n",pe32.szExeFile);
   Pid=pe32.th32ProcessID;
   break;
  }
  b=::Process32Next(hProcessSnap,&pe32);
 }
 ::CloseHandle(hProcessSnap);

 THREADENTRY32 th32;
 th32.dwSize=sizeof(th32);

 HANDLE hThreadSnap=::CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD,0);
 if(hThreadSnap==INVALID_HANDLE_VALUE)
 {
  printf("CreateToolhelp32Snapshot调用失败！");
  return -1;
 }

 b=::Thread32First(hThreadSnap,&th32);
 while(b)
 {
  if(th32.th32OwnerProcessID==Pid)
  { 
   HANDLE oth=OpenThread(THREAD_ALL_ACCESS,FALSE,th32.th32ThreadID);
   if(!(::SuspendThread(oth)))
   {
    printf("Onlock Thread id:%d/n",th32.th32ThreadID);
    printf("Onlock ThreadOwnerProcessID:%d/n",th32.th32OwnerProcessID);
    printf("Onlock ExeFileName %s/n",pe32.szExeFile);
   }
   CloseHandle(oth);
   break;
  }
  ::Thread32Next(hThreadSnap,&th32);
 }
 ::CloseHandle(hThreadSnap);

 return 0;
}

解冻进程

#include <stdio.h>
#include <windows.h>
#include <tlhelp32.h>

int main(int argc,char *argv[])
{
 PROCESSENTRY32 pe32;
 pe32.dwSize=sizeof(pe32);
 unsigned long Pid;

 HANDLE hProcessSnap=::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);

 if(hProcessSnap==INVALID_HANDLE_VALUE)
 {
  printf("CreateToolhelp32Snapshot调用失败！");
  return -1;
 }

 BOOL b=::Process32First(hProcessSnap,&pe32);
 while(b)
 {
  if(!strcmp(pe32.szExeFile,argv[1]))
  {
   printf("Find %s ok!/n",pe32.szExeFile);
   Pid=pe32.th32ProcessID;
   break;
  }
  b=::Process32Next(hProcessSnap,&pe32);
 }
 ::CloseHandle(hProcessSnap);

 THREADENTRY32 th32;
 th32.dwSize=sizeof(th32);

 HANDLE hThreadSnap=::CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD,0);
 if(hThreadSnap==INVALID_HANDLE_VALUE)
 {
  printf("CreateToolhelp32Snapshot调用失败！");
  return -1;
 }

 b=::Thread32First(hThreadSnap,&th32);
 while(b)
 {
  if(th32.th32OwnerProcessID==Pid)
  { 
   HANDLE oth=OpenThread(THREAD_ALL_ACCESS,FALSE,th32.th32ThreadID);
   if(::ResumeThread(oth))
   {
    printf("Unlock Thread id:%d/n",th32.th32ThreadID);
    printf("Unlock ThreadOwnerProcessID:%d/n",th32.th32OwnerProcessID);
    printf("Unlock ExeFileName %s/n",pe32.szExeFile);
   }
   CloseHandle(oth);
   break;
  }
  ::Thread32Next(hThreadSnap,&th32);
 }
 ::CloseHandle(hThreadSnap);

 return 0;
}

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原文链接： http://blog.csdn.net/yincheng01/article/details/4395031