Find Window By Caption what is the caption of the

问题:

I have to track the running time of a program. That program exposes the following window

At the same time I launch my program which in a timer does:

private void TimerCheckGroups_Tick(object sender, EventArgs e)
{
  IntPtr windowPtr = FindWindowByCaption(IntPtr.Zero, "Execution");
  if (windowPtr != IntPtr.Zero)
    Console.Beep();<--------
}

But the beep line never gets hit. Have I misunderstood the meaning of a window caption?

--ADD-- I'll try to make the execution phases clearer.

Startup----> launch my logger.

User-------> launches program A that launches program B (not visible) that launches window C. C has caption Execution.

When I launch the solution proposed by dontbyteme the only the B program appears so only 1 window.

In short

• logger: not visible since it's a tray program

• program A: visible since it's the main program

• program B: not visible since it's set to Notvisible

• program C: not visible why?!?!?!?

---

--SOLUTION THANX TO JARRETT--

• logger stays idle with a timer monitoring processes

• program A starts but nobody cares about it. Then program A launches program B

• when program B is awake i find the window and start logging

回答1:

The following question addresses how to find out when programs launch. Detecting the launch of a application Also, you can enumerate windows on your machine with a dll import and using EnumWindows. Sample pInvokes that will help you are listed.

    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    private static extern bool EnumWindows(EnumWindowsProc enumProc, IntPtr lParam);
    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    private static extern int GetWindowText(IntPtr hWnd, StringBuilder strText, int maxCount);
    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    private static extern int GetWindowTextLength(IntPtr hWnd);
    [DllImport("user32.dll")]
    private static extern bool IsWindowVisible(IntPtr hWnd);

回答2:

You can try getting the window by running through each window and compare to the title:

    foreach(Window window in Application.Current.Windows)
    {
        if(window.Title == "Execution")
        {
            Console.Beep();
            // ...
        }
    }

The Title property is what you called Caption.