在某些应用场合下，我们可能需要在启动A进程启动时关闭进程B。MFC下该如何做呢？以下是我项目中用到的代码：
int KillProcess(DWORD Pid)
{
//打开进程得到进程句柄
HANDLE hProcess=OpenProcess(PROCESS_ALL_ACCESS,FALSE,Pid);
if(hProcess==NULL)
{
printf("OpenProcess error\n");
return 0;
}
//结束进程
if (TerminateProcess(hProcess,0))
{
printf("结束进程成功\n");
return 0;
}
else
{
printf("结束进程失败\n");
return 0;
}
} int GetProcess()
{
char buff[1024]={0};
PROCESSENTRY32 pe32;
pe32.dwSize=sizeof(pe32);
//获得系统内所有进程快照
HANDLE hProcessSnap=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
if(hProcessSnap==INVALID_HANDLE_VALUE)
{
printf("CreateToolhelp32Snapshot error");
return 0;
}
//枚举列表中的第一个进程
BOOL bProcess=Process32First(hProcessSnap,&pe32);
while(bProcess)
{
//格式化进程名和进程ID
wsprintf(buff,"%s---------------%d\r\n",pe32.szExeFile,pe32.th32ProcessID);
//输出进程名和进程ID
printf(buff);
memset(buff,0x00,1024);
//继续枚举进程
bProcess=Process32Next(hProcessSnap,&pe32);
}
CloseHandle(hProcessSnap);
return 0;
} bool EnableDebugPrivilege()
{
HANDLE hToken;
LUID sedebugnameValue;
TOKEN_PRIVILEGES tkp;
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
{
return FALSE;
}
if (!LookupPrivilegeValue(NULL, SE_DEBUG_NAME, &sedebugnameValue))
{
CloseHandle(hToken);
return false;
}
tkp.PrivilegeCount = 1;
tkp.Privileges[0].Luid = sedebugnameValue;
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if (!AdjustTokenPrivileges(hToken, FALSE, &tkp, sizeof(tkp), NULL, NULL))
{
CloseHandle(hToken);
return false;
}
return true;
} void CAngleDetectSystemDlg::CloseSecondSys()
{
EnableDebugPrivilege();
int rc = 0;
HANDLE hSysSnapshot = NULL;
PROCESSENTRY32 proc;
hSysSnapshot = CreateToolhelp32Snapshot ( TH32CS_SNAPPROCESS, 0 );
if ( hSysSnapshot == (HANDLE)-1 ) return;
proc.dwSize = sizeof(proc);
if ( Process32First ( hSysSnapshot, &proc ) )
{
do {
if (stricmp(proc.szExeFile, "从机检测系统.exe") == 0)
{
HANDLE Proc_handle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, proc.th32ProcessID);
if (Proc_handle==NULL || !TerminateProcess(Proc_handle, 0)) rc = 1;
else rc = 0;
}
} while ( Process32Next ( hSysSnapshot, &proc ) );
} CloseHandle ( hSysSnapshot ); return;
}
其中void CAngleDetectSystemDlg::CloseSecondSys()是关闭进程的函数，“从机检测系统.exe”是需要关闭的进程，你可以换成自己需要关闭的进程名称。注意在关闭其他进程时，需要提升当前进程的权限。
顺便附上在A进程中启动B进程的代码：
void CAngleDetectSystemDlg::OpenSecondSys()
{
SHELLEXECUTEINFO sys2_shell = {sizeof(sys2_shell)};
sys2_shell.fMask = SEE_MASK_FLAG_DDEWAIT;
sys2_shell.lpVerb = "open";
sys2_shell.lpFile = "从机检测系统.exe";
sys2_shell.nShow = SW_NORMAL;
ShellExecuteEx(&sys2_shell);
}