示例#1
0
            private void DrawUpDownButton()
            {
                bool mouseOver       = false;
                bool mousePress      = LeftKeyPressed();
                bool mouseInUpButton = false;

                RECT rect = new RECT();

                GetClientRect(base.Handle, ref rect);

                Rectangle clipRect = Rectangle.FromLTRB(
                    rect.Top, rect.Left, rect.Right, rect.Bottom);

                Point cursorPoint = new Point();

                GetCursorPos(ref cursorPoint);
                GetWindowRect(base.Handle, ref rect);

                mouseOver = PtInRect(ref rect, cursorPoint);

                cursorPoint.X -= rect.Left;
                cursorPoint.Y -= rect.Top;

                mouseInUpButton = cursorPoint.X < clipRect.Width / 2;

                using (Graphics g = Graphics.FromHwnd(base.Handle))
                {
                    UpDownButtonPaintEventArgs e =
                        new UpDownButtonPaintEventArgs(
                            g,
                            clipRect,
                            mouseOver,
                            mousePress,
                            mouseInUpButton);
                    _owner.OnPaintUpDownButton(e);
                }
            }
示例#2
0
        /// <summary>
        /// 对左右键进行重绘
        /// </summary>
        /// <param name="e">左右键的参数,继承painteventargs</param>
        protected virtual void OnPaintUpDownButton(
            UpDownButtonPaintEventArgs e)
        {
            Graphics  g    = e.Graphics;
            Rectangle rect = e.ClipRectangle;//程序分配给左右箭头的矩形

            Color upButtonBaseColor   = _baseColor;
            Color upButtonBorderColor = _borderColor;
            Color upButtonArrowColor  = _arrowColor;

            Color     downButtonBaseColor   = _baseColor;
            Color     downButtonBorderColor = _borderColor;
            Color     downButtonArrowColor  = _arrowColor;
            Rectangle upButtonRect          = rect;

            Bitmap    bmp     = new Bitmap(rect.Width, rect.Height);
            Graphics  gb      = Graphics.FromImage(bmp);
            Rectangle bmpRect = new Rectangle(0, 0, rect.Width, rect.Height);

            upButtonRect.X       = 1;
            upButtonRect.Y       = 1;
            upButtonRect.Width   = rect.Width / 2 - 4;
            upButtonRect.Height -= 2;

            Rectangle downButtonRect = rect;

            downButtonRect.X       = upButtonRect.Right + 2;
            downButtonRect.Y       = 1;
            downButtonRect.Width   = rect.Width / 2 - 4;
            downButtonRect.Height -= 2;

            if (Enabled)
            {
                if (e.MouseOver)
                {
                    if (e.MousePress)//按下键时
                    {
                        if (e.MouseInUpButton)
                        {
                            upButtonBaseColor = GetColor(_baseColor, 0, -35, -24, -9);
                        }
                        else
                        {
                            downButtonBaseColor = GetColor(_baseColor, 0, -35, -24, -9);
                        }
                    }
                    else//仅仅是鼠标over未按键时
                    {
                        if (e.MouseInUpButton)
                        {
                            upButtonBaseColor = GetColor(_baseColor, 0, 35, 24, 9);
                        }
                        else
                        {
                            downButtonBaseColor = GetColor(_baseColor, 0, 35, 24, 9);
                        }
                    }
                }
            }
            else
            {
                upButtonBaseColor   = SystemColors.Control;
                upButtonBorderColor = SystemColors.ControlDark;
                upButtonArrowColor  = SystemColors.ControlDark;

                downButtonBaseColor   = SystemColors.Control;
                downButtonBorderColor = SystemColors.ControlDark;
                downButtonArrowColor  = SystemColors.ControlDark;
            }

            g.SmoothingMode  = SmoothingMode.AntiAlias;
            gb.SmoothingMode = SmoothingMode.AntiAlias;
            Color backColor = Enabled ? _backColor : SystemColors.Control;

            using (SolidBrush brush = new SolidBrush(_backColor))
            {
                rect.Inflate(1, 1);
                gb.FillRectangle(brush, bmpRect);
            }

            RenderButton(
                gb,
                upButtonRect,
                upButtonBaseColor,
                upButtonBorderColor,
                upButtonArrowColor,
                ArrowDirection.Left);
            RenderButton(
                gb,
                downButtonRect,
                downButtonBaseColor,
                downButtonBorderColor,
                downButtonArrowColor,
                ArrowDirection.Right);
            g.DrawImage(bmp, rect.X, rect.Y);
            bmp.Dispose();
            gb.Dispose();
            UpDownButtonPaintEventHandler handler =
                base.Events[EventPaintUpDownButton] as UpDownButtonPaintEventHandler;

            if (handler != null)
            {
                handler(this, e);
            }
        }