Question

C++如何通过进程名取得PID?(只用Windows API)

Answer 1

基本思路就是遍历所有的进程
BOOL GetProcessIdByName(LPTSTR szProcessName, LPDWORD lpPID)
{
// 变量及初始化
STARTUPINFO st;
PROCESS_INFORMATION pi;
PROCESSENTRY32 ps;
HANDLE hSnapshot;
ZeroMemory(&st, sizeof(STARTUPINFO));
ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));
st.cb = sizeof(STARTUPINFO);
ZeroMemory(&ps,sizeof(PROCESSENTRY32));
ps.dwSize = sizeof(PROCESSENTRY32);
// 遍历进程
hSnapshot = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0);
if(hSnapshot == INVALID_HANDLE_VALUE)
{
return FALSE;
}

if(!Process32First(hSnapshot,&ps))
{
return FALSE;
}
do
{
// 比较进程名
if(lstrcmpi(ps.szExeFile,szProcessName)==0)
{
// 找到了
*lpPID = ps.th32ProcessID;
CloseHandle(hSnapshot);
return TRUE;
}
}
while(Process32Next(hSnapshot,&ps));
// 没有找到
CloseHandle(hSnapshot);
return FALSE;
}