private static IntPtr GetRunningSingletonInstanceWindowHandle()
{
var windowHandle = IntPtr.Zero;
var currentProcess = Process.GetCurrentProcess();
foreach (var enumeratedProcess in Process.GetProcessesByName(currentProcess.ProcessName))
{
if (enumeratedProcess.Id != currentProcess.Id && enumeratedProcess.MainModule.FileName == currentProcess.MainModule.FileName && enumeratedProcess.MainWindowHandle != IntPtr.Zero)
{
windowHandle = enumeratedProcess.MainWindowHandle;
}
}
if (windowHandle == IntPtr.Zero) //按进程名查找失败，按窗体名称查找一次
{
windowHandle = ForSystem.FindWindow(null, "HLS下载器");
}
return(windowHandle);
}
private static void SwitchToCurrentInstance()
{
var singletonInstanceWindowHandle = GetRunningSingletonInstanceWindowHandle();
if (singletonInstanceWindowHandle == IntPtr.Zero)
{
return;
}
if (ForSystem.IsWindowVisible(singletonInstanceWindowHandle) == 0)//最小化到托盘，窗体不可见，显示
{
ForSystem.ShowWindow(singletonInstanceWindowHandle, (int)ForSystem.SW_SHOW);
ForSystem.SetForegroundWindow(singletonInstanceWindowHandle); //设置到最前显示
}
else if (ForSystem.IsIconic(singletonInstanceWindowHandle) != 0) //最小化到任务栏，还原显示
{
ForSystem.ShowWindow(singletonInstanceWindowHandle, (int)ForSystem.SW_RESTORE);
}
else//正常状态，设置到最前显示
{
ForSystem.SetForegroundWindow(singletonInstanceWindowHandle);
}
}
public static void Main(string[] args)
{
bool isNewInstanceCreate;
mutex = new Mutex(true, Application.ProductName, out isNewInstanceCreate);
if (isNewInstanceCreate)
{
if (args.Length == 0) //仅在手动开启非调用时提示“以管理员运行”
{
WindowsIdentity identity = WindowsIdentity.GetCurrent(); //获得当前登录的Windows用户标识
WindowsPrincipal principal = new WindowsPrincipal(identity);
if (!principal.IsInRole(WindowsBuiltInRole.Administrator)) //判断当前登录用户是否为管理员
{
MessageBox.Show("当前用户不是管理员！（建议设置以管理员身份运行程序）\r\n部分功能可能会出现异常。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
if (mainWindow == null)
{
GC.KeepAlive(mutex);
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
if (args.Length == 0)
{
mainWindow = new MainForm();
}
else
{
mainWindow = new MainForm(args);
}
Application.Run(mainWindow);
}
}
else
{
//MessageBox.Show("程序已经运行，请勿重复打开！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
if (args.Length == 0) //不包含任何参数时，激活到最前
{
SwitchToCurrentInstance(); //激活已经打开的程序
}
else//包含参数时，传递参数给m3u8dl.service.exe，由它传给主程序（正确处理进程间通信）
{
try
{
#region 递给m3u8dl.service，再传递给HLSDownloader，容易丢失引号“”，造成参数截断，故更换方法
//var cmdStr = Path.Combine(Application.StartupPath, "Service\\m3u8dl.service.exe") + " " + String.Join(" ", args);
//MessageBox.Show(cmdStr);
//var serviceAppPath = Path.Combine(Application.StartupPath, "Service\\m3u8dl.service.exe");
//if (File.Exists(serviceAppPath))
//{
//ProcessStartInfo psi = new ProcessStartInfo(serviceAppPath,
//String.Join(" ", args));
////设定工作目录，是为了让m3u8dl.service窗体必定隐藏
//psi.WorkingDirectory = Environment.GetFolderPath(Environment.SpecialFolder.System);
//psi.UseShellExecute = false;
//psi.CreateNoWindow = true;
//Process.Start(psi);
//}
#endregion
var mainWindowHandle = GetRunningSingletonInstanceWindowHandle();
if (mainWindowHandle != IntPtr.Zero) //向主程序窗口发送Windows消息，传入参数信息
{
string strArgs = String.Join("|", args);
int size = Encoding.Unicode.GetByteCount(strArgs);
COPYDATASTRUCT cds;
cds.dwData = mainWindowHandle;
cds.cbData = size + 1;//最后以null结束，占一位
cds.lpData = strArgs;
ForSystem.SendMessage(mainWindowHandle, ForSystem.WM_COPYDATA, 0, ref cds);
}
}
catch { }
}
CloseSingletonInstanceMutex();
Application.Exit();
}
}
