How can I be notified when a new window is created on Win32?

Question

Is there a way using Win32, to register for notifications when a new window is created. I'm trying to keep a list of current open windows, but am now just polling the list of current windows using EnumWindows().

Anyone done something similar?

Thanks

---

I'm not sure if I'm doing this right, but I'm not able to get the SetWindowsHookEx method to fire.

anything come to mind?

here is my snip

[DllImport("user32.dll", SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(HookType hook, HookProc callback, IntPtr hMod, uint dwThreadId);

[DllImport("user32.dll")]
private static extern int CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);
const int HSHELL_WINDOWCREATED = 1;

private static HookProc winDelegate = ShellHookProcDelegate;
internal static void RegisterWindowCreatedEvent()
{
    SetWindowsHookEx(HookType.WH_SHELL, winDelegate, IntPtr.Zero, 0);
}

private static int ShellHookProcDelegate(int code, IntPtr wParam, IntPtr lParam)
{
    if (code != HSHELL_WINDOWCREATED)
    {
        return CallNextHookEx(IntPtr.Zero, code, wParam, lParam);
    }

    //App specific code here

    return CallNextHookEx(IntPtr.Zero, code, wParam, lParam);
}

Answer 1

Use SetWindowsHookEx to set up a WH_SHELL hook and look for the HSHELL_WINDOWCREATED event.