根据窗口标题获取文件路径

public const int PROCESS_ALL_ACCESS = 0x000F0000 | 0x00100000 | 0xFFF;

public void ss() {
            int pid=0;
            int handle = FindWindow(null, "i6客户显示屏");
            pid = GetWindowThreadProcessId(handle,out pid);
            IntPtr processHandle = OpenProcess(PROCESS_ALL_ACCESS,false, pid);
            StringBuilder sb = new StringBuilder(200);
            GetModuleFileName(processHandle, out sb, sb.Capacity);
        }