unsafe IntPtr WindowProcedure(IntPtr handle, WindowMessage message, IntPtr wParam, IntPtr lParam) { switch (message) { #region Size / Move / Style events case WindowMessage.ACTIVATE: // See http://msdn.microsoft.com/en-us/library/ms646274(VS.85).aspx (WM_ACTIVATE notification): // wParam: The low-order word specifies whether the window is being activated or deactivated. bool new_focused_state = Focused; focused = (wParam.ToInt64() & 0xFFFF) != 0; if (new_focused_state != Focused && FocusedChanged != null) { FocusedChanged(this, EventArgs.Empty); } break; case WindowMessage.ENTERMENULOOP: case WindowMessage.ENTERSIZEMOVE: case WindowMessage.EXITMENULOOP: case WindowMessage.EXITSIZEMOVE: break; case WindowMessage.ERASEBKGND: return(new IntPtr(1)); case WindowMessage.WINDOWPOSCHANGED: WindowPosition *pos = (WindowPosition *)lParam; if (window != null && pos->hwnd == window.handle) { Point new_location = new Point(pos->x, pos->y); if (Location != new_location) { bounds.Location = new_location; if (Move != null) { Move(this, EventArgs.Empty); } } Size new_size = new Size(pos->cx, pos->cy); if (Size != new_size) { bounds.Width = pos->cx; bounds.Height = pos->cy; Win32Rectangle rect; API.GetClientRect(handle, out rect); client_rectangle = rect.ToRectangle(); API.SetWindowPos(window.handle, IntPtr.Zero, bounds.X, bounds.Y, bounds.Width, bounds.Height, SetWindowPosFlags.NOZORDER | SetWindowPosFlags.NOOWNERZORDER | SetWindowPosFlags.NOACTIVATE | SetWindowPosFlags.NOSENDCHANGING); if (suppress_resize <= 0 && Resize != null) { Resize(this, EventArgs.Empty); } } } break; case WindowMessage.STYLECHANGED: if (wParam.ToInt64() == (long)GWL.STYLE) { WindowStyle style = ((StyleStruct *)lParam)->New; if ((style & WindowStyle.Popup) != 0) { hiddenBorder = true; } else if ((style & WindowStyle.ThickFrame) != 0) { hiddenBorder = false; } } break; case WindowMessage.SIZE: SizeMessage state = (SizeMessage)wParam.ToInt64(); WindowState new_state = windowState; switch (state) { case SizeMessage.RESTORED: new_state = WindowState.Normal; break; case SizeMessage.MINIMIZED: new_state = WindowState.Minimized; break; case SizeMessage.MAXIMIZED: new_state = hiddenBorder ? WindowState.Fullscreen : WindowState.Maximized; break; } if (new_state != windowState) { windowState = new_state; if (WindowStateChanged != null) { WindowStateChanged(this, EventArgs.Empty); } } break; #endregion #region Input events case WindowMessage.CHAR: key_press.KeyChar = (char)wParam.ToInt64(); if (KeyPress != null) { KeyPress(this, key_press); } break; case WindowMessage.MOUSEMOVE: Point point = new Point( (short)((uint)lParam.ToInt32() & 0x0000FFFF), (short)(((uint)lParam.ToInt32() & 0xFFFF0000) >> 16)); mouse.Position = point; if (mouse_outside_window) { // Once we receive a mouse move event, it means that the mouse has // re-entered the window. mouse_outside_window = false; EnableMouseTracking(); if (MouseEnter != null) { MouseEnter(this, EventArgs.Empty); } } break; case WindowMessage.MOUSELEAVE: mouse_outside_window = true; // Mouse tracking is disabled automatically by the OS if (MouseLeave != null) { MouseLeave(this, EventArgs.Empty); } // Set all mouse buttons to off when user leaves window, prevents them being stuck down. for (MouseButton btn = 0; btn < MouseButton.LastButton; btn++) { mouse[btn] = false; } break; case WindowMessage.MOUSEWHEEL: // This is due to inconsistent behavior of the WParam value on 64bit arch, whese // wparam = 0xffffffffff880000 or wparam = 0x00000000ff100000 mouse.Wheel += ((long)wParam << 32 >> 48) / 120.0f; return(IntPtr.Zero); case WindowMessage.LBUTTONDOWN: mouse[MouseButton.Left] = true; break; case WindowMessage.MBUTTONDOWN: mouse[MouseButton.Middle] = true; break; case WindowMessage.RBUTTONDOWN: mouse[MouseButton.Right] = true; break; case WindowMessage.XBUTTONDOWN: keyboard[(((ulong)wParam.ToInt64() >> 16) & 0xFFFF) == 1 ? Key.XButton1 : Key.XButton2] = true; break; case WindowMessage.LBUTTONUP: mouse[MouseButton.Left] = false; break; case WindowMessage.MBUTTONUP: mouse[MouseButton.Middle] = false; break; case WindowMessage.RBUTTONUP: mouse[MouseButton.Right] = false; break; case WindowMessage.XBUTTONUP: keyboard[(((ulong)wParam.ToInt64() >> 16) & 0xFFFF) == 1 ? Key.XButton1 : Key.XButton2] = false; break; // Keyboard events: case WindowMessage.KEYDOWN: case WindowMessage.KEYUP: case WindowMessage.SYSKEYDOWN: case WindowMessage.SYSKEYUP: bool pressed = message == WindowMessage.KEYDOWN || message == WindowMessage.SYSKEYDOWN; // Shift/Control/Alt behave strangely when e.g. ShiftRight is held down and ShiftLeft is pressed // and released. It looks like neither key is released in this case, or that the wrong key is // released in the case of Control and Alt. // To combat this, we are going to release both keys when either is released. Hacky, but should work. // Win95 does not distinguish left/right key constants (GetAsyncKeyState returns 0). // In this case, both keys will be reported as pressed. bool extended = (lParam.ToInt64() & ExtendedBit) != 0; switch ((VirtualKeys)wParam) { case VirtualKeys.SHIFT: // The behavior of this key is very strange. Unlike Control and Alt, there is no extended bit // to distinguish between left and right keys. Moreover, pressing both keys and releasing one // may result in both keys being held down (but not always). bool lShiftDown = (API.GetKeyState((int)VirtualKeys.LSHIFT) >> 15) == 1; bool rShiftDown = (API.GetKeyState((int)VirtualKeys.RSHIFT) >> 15) == 1; if (!pressed || lShiftDown != rShiftDown) { Keyboard[Input.Key.ShiftLeft] = lShiftDown; Keyboard[Input.Key.ShiftRight] = rShiftDown; } return(IntPtr.Zero); case VirtualKeys.CONTROL: if (extended) { keyboard[Input.Key.ControlRight] = pressed; } else { keyboard[Input.Key.ControlLeft] = pressed; } return(IntPtr.Zero); case VirtualKeys.MENU: if (extended) { keyboard[Input.Key.AltRight] = pressed; } else { keyboard[Input.Key.AltLeft] = pressed; } return(IntPtr.Zero); case VirtualKeys.RETURN: if (extended) { keyboard[Key.KeypadEnter] = pressed; } else { keyboard[Key.Enter] = pressed; } return(IntPtr.Zero); default: Key tkKey; if (!KeyMap.TryGetMappedKey((VirtualKeys)wParam, out tkKey)) { Debug.Print("Virtual key {0} ({1}) not mapped.", (VirtualKeys)wParam, lParam.ToInt64()); break; } else { keyboard[tkKey] = pressed; } return(IntPtr.Zero); } break; case WindowMessage.SYSCHAR: return(IntPtr.Zero); case WindowMessage.KILLFOCUS: keyboard.ClearKeys(); break; #endregion #region Creation / Destruction events case WindowMessage.CREATE: CreateStruct cs = (CreateStruct)Marshal.PtrToStructure(lParam, typeof(CreateStruct)); if (cs.hwndParent == IntPtr.Zero) { bounds.X = cs.x; bounds.Y = cs.y; bounds.Width = cs.cx; bounds.Height = cs.cy; Win32Rectangle rect; API.GetClientRect(handle, out rect); client_rectangle = rect.ToRectangle(); invisible_since_creation = true; } break; case WindowMessage.CLOSE: System.ComponentModel.CancelEventArgs e = new System.ComponentModel.CancelEventArgs(); if (Closing != null) { Closing(this, e); } if (!e.Cancel) { DestroyWindow(); break; } return(IntPtr.Zero); case WindowMessage.DESTROY: exists = false; API.UnregisterClass(ClassName, Instance); window.Dispose(); if (Closed != null) { Closed(this, EventArgs.Empty); } break; #endregion } return(API.DefWindowProc(handle, message, wParam, lParam)); }
public void Close() { API.PostMessage(window.handle, WindowMessage.CLOSE, IntPtr.Zero, IntPtr.Zero); }