public void Attach(IntPtr hwnd)
{
if (hwnd == IntPtr.Zero)
{
throw new ArgumentNullException("hwnd");
}
lock (_syncRoot)
{
if (_window != null)
{
throw new InvalidOperationException("Already attached!");
}
ErrorMessage = null;
IsRendering = false;
_window = CreateSubclassWindow(hwnd);
_good.Clear();
_isRunning = true;
_thread = new Thread(RenderThreadProc);
_thread.IsBackground = false;
_thread.Start();
}
}
private SubclassWindow CreateSubclassWindow(IntPtr hwnd)
{
var window = new SubclassWindow(this);
var failed = false;
try
{
window.AssignHandle(hwnd);
return(window);
}
catch (Exception ex)
{
failed = true;
ErrorMessage = string.Format("{0}: {1}", ex.GetType().Name, ex.Message);
throw;
}
finally
{
if (failed)
{
window.ReleaseHandle();
}
}
}
public void Detach()
{
IsRendering = false;
Thread thread = null;
SubclassWindow window = null;
lock (_syncRoot)
{
window = _window;
_window = null;
thread = _thread;
_thread = null;
_isRunning = false;
}
// wait&release outside lock to avoid deadlock
if (thread != null && thread.IsAlive)
{
thread.Join();
}
if (window != null)
{
window.ReleaseHandle();
}
}
public SubclassWindowRoot(SubclassWindow child)
{
_child = child;
}
