private static IntPtr _WndProc(IntPtr hwnd, Standard.WM msg, IntPtr wParam, IntPtr lParam) { IntPtr zero = IntPtr.Zero; Standard.MessageWindow target = null; if (msg == Standard.WM.CREATE) { Standard.CREATESTRUCT createstruct = (Standard.CREATESTRUCT)Marshal.PtrToStructure(lParam, typeof(Standard.CREATESTRUCT)); target = (Standard.MessageWindow)GCHandle.FromIntPtr(createstruct.lpCreateParams).Target; s_windowLookup.Add(hwnd, target); } else if (!s_windowLookup.TryGetValue(hwnd, out target)) { return(Standard.NativeMethods.DefWindowProc(hwnd, msg, wParam, lParam)); } Standard.WndProc proc = target._wndProcCallback; if (proc != null) { zero = proc(hwnd, msg, wParam, lParam); } else { zero = Standard.NativeMethods.DefWindowProc(hwnd, msg, wParam, lParam); } if (msg == Standard.WM.NCDESTROY) { target._Dispose(true, true); GC.SuppressFinalize(target); } return(zero); }
public MessageWindow(Standard.CS classStyle, Standard.WS style, Standard.WS_EX exStyle, Rect location, string name, Standard.WndProc callback) { this._wndProcCallback = callback; this._className = "MessageWindowClass+" + Guid.NewGuid().ToString(); Standard.WNDCLASSEX lpwcx = new Standard.WNDCLASSEX { cbSize = Marshal.SizeOf(typeof(Standard.WNDCLASSEX)), style = classStyle, lpfnWndProc = s_WndProc, hInstance = Standard.NativeMethods.GetModuleHandle(null), hbrBackground = Standard.NativeMethods.GetStockObject(Standard.StockObject.NULL_BRUSH), lpszMenuName = "", lpszClassName = this._className }; Standard.NativeMethods.RegisterClassEx(ref lpwcx); GCHandle handle = new GCHandle(); try { handle = GCHandle.Alloc(this); IntPtr lpParam = (IntPtr)handle; this.Handle = Standard.NativeMethods.CreateWindowEx(exStyle, this._className, name, style, (int)location.X, (int)location.Y, (int)location.Width, (int)location.Height, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, lpParam); } finally { handle.Free(); } }