通過進程名獲取進程ID

BOOL GetProcessIdByName(LPSTR szProcessName, DWORD *lpPID)
{
	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);

	hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
	if(hSnapshot == INVALID_HANDLE_VALUE)
	{
		return FALSE;
	}
	
	if(!Process32First(hSnapshot,&ps))
	{
		return FALSE;
	}
	do
	{
		if(lstrcmpi(ps.szExeFile,szProcessName) == 0)
		{
			*lpPID = ps.th32ProcessID;
			CloseHandle(hSnapshot);
			return TRUE;
		}
	}while(Process32Next(hSnapshot,&ps));
	CloseHandle(hSnapshot);
	return FALSE;
}