EnumWindowsProc returns int?

[xjfhgkjzyxy]

in the Microsoft.Win32.NativeMethods internal delegate bool EnumWindowsCallback(IntPtr hWnd, IntPtr lParam); it returens bool ture to goes deep, false to stop

but, int the namespace Win32Interop.Methods [UnmanagedFunctionPointer(CallingConvention.StdCall)] public delegate int EnumWindowsProc(IntPtr hwnd, IntPtr lParam); it returns int

then, how to use this?

[xjfhgkjzyxy]

BOOL TURE 1, FALSE 0, ERROR -1