Finding an open window in the console using a loop

Question

I can not do a check of an open window in a loop.

IntPtr ptr = WinAPI.FindWindow(null, "VKMusic4"); while (ptr == IntPtr.Zero) { if (ptr == IntPtr.Zero) // скорее всего это лишнее) { Console.WriteLine("окно не найдено"); // Если окно не нашли то возвращаемся к поиску. } else { Если нашли то делаем что либо: Console.WriteLine("окно найдено"); } Console.Read(); }

And then if the window is closed, we do the check again, and so on forever.

There is a hook procedure in which the notification of the creation of any top window comes.
The simpler option is to check the validity of the window so IsWindow(ptr) msdn.microsoft.com/ru-ru/library/windows/desktop/ ... As soon as the window

Accepted Answer · 2016-12-05T09:19:09

I read the question more carefully. Then so:

 while (true) { IntPtr ptr = WinAPI.FindWindow(null, "VKMusic4"); if (ptr == IntPtr.Zero) { Console.WriteLine("окно не найдено"); Thread.Sleep(1000); } else { Console.WriteLine("окно найдено"); do Thread.Sleep(1000); while (WinAPI.FindWindow(null, "VKMusic4") == ptr); } }

or so:

 IntPtr ptr, old = IntPtr.Zero while (true) { ptr = WinAPI.FindWindow(null, "VKMusic4"); if (ptr == IntPtr.Zero) { Console.WriteLine("окно не найдено"); } else if (ptr == old) { Console.WriteLine("окно уже обработано"); } else { Console.WriteLine("окно найдено"); old = ptr; } Thread.Sleep(1000); }

Rearrange the lines according to the numbers (X - delete). Line 3 is divided into 0 and 3 - in 0 declaration of the variable, in 3 - assignment.

 3 IntPtr ptr = WinAPI.FindWindow(null, "VKMusic4"); 1 while (ptr == IntPtr.Zero) 2 { 4 if (ptr == IntPtr.Zero) // скорее всего это лишнее) X { 5 Console.WriteLine("окно не найдено"); X // Если окно не нашли то возвращаемся к поиску. X } X else X { 7 Если нашли то делаем что либо: 8 Console.WriteLine("окно найдено"); X } 5 Console.Read(); 6 }

It should turn out like this:

 IntPtr ptr; while ((ptr = WinAPI.FindWindow(null, "VKMusic4")) == IntPtr.Zero) { Console.WriteLine("окно не найдено"); Console.Read(); } Console.WriteLine("окно найдено");

If the window is open, then the console closes, if there is no window, the console is hanging, but if there is a window, do I need to do something else ?!
Maybe you need to put Sleep so as not to hang the system in a loop, but the message was not found - do not output?
And before Console.Read you need to check whether the console buffer is full.
@Qwertiy, This is already something) But the cycle goes only if the window is not found, if found, if the window is closed again, how to continue the window search cycle?

Finding an open window in the console using a loop

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