public void SubClass(IntPtr owner)
{
Debug.WriteLine("SubClass(): " + owner);
var pt = Win32.GetCursorPos();
var pt1 = new Win32.POINT(pt.X, pt.Y);
_owner = owner == IntPtr.Zero ? Win32.WindowFromPoint(pt1) : owner;
if (_owner == IntPtr.Zero)
throw new NullReferenceException("Can't find owner");
_root = Win32.GetAncestor(_owner, Win32.GA_ROOT);
if (_root == IntPtr.Zero)
throw new NullReferenceException("Can't find root");
_ownerWndProc = WndProc;
_oldOwner = Win32.SetWindowProc(_owner, _ownerWndProc);
if (_oldOwner == IntPtr.Zero)
throw new InvalidOperationException("Failed subclass");
_rootWndProc = RootWndProc;
_oldRoot = Win32.SetWindowProc(_root, _rootWndProc);
if (_oldRoot == IntPtr.Zero)
throw new InvalidOperationException("Failed subclass");
}
public void SubClass(IntPtr owner)
{
Debug.WriteLine("SubClass(): " + owner);
var pt = Win32.GetCursorPos();
var pt1 = new Win32.POINT(pt.X, pt.Y);
_owner = owner == IntPtr.Zero ? Win32.WindowFromPoint(pt1) : owner;
if (_owner == IntPtr.Zero)
{
throw new NullReferenceException("Can't find owner");
}
_root = Win32.GetAncestor(_owner, Win32.GA_ROOT);
if (_root == IntPtr.Zero)
{
throw new NullReferenceException("Can't find root");
}
_ownerWndProc = WndProc;
_oldOwner = Win32.SetWindowProc(_owner, _ownerWndProc);
if (_oldOwner == IntPtr.Zero)
{
throw new InvalidOperationException("Failed subclass");
}
_rootWndProc = RootWndProc;
_oldRoot = Win32.SetWindowProc(_root, _rootWndProc);
if (_oldRoot == IntPtr.Zero)
{
throw new InvalidOperationException("Failed subclass");
}
}