Button美化

在这之前 首先的准备好素材导入到工程资源里面去：

图什么的 这个就自己搞定吧 到处去扒一下皮 反正、、重点在于会搞就行、、- -！、、其实吧 这些图完全可以做成一张图 然后绘制的时候 自己从大图上面切图绘制就行了、、不然到时候 会有很多图看着别扭、、

代码直接贴上来、、 我觉得 代码完全不用解释、、本来就很简单、、

public partial class ButtonEx : Button
{
    public ButtonEx() {
        //双缓冲的一大堆设置 具体参数含义参照msdn的ControlStyles枚举值
        this.SetStyle(ControlStyles.UserPaint, true);
        this.SetStyle(ControlStyles.ResizeRedraw, true);
        this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
        this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
        this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
        this.BackColor = Color.Transparent;
    }

    private bool m_bMouseHover;
    private bool m_bMouseDown;

    protected override void OnMouseEnter(EventArgs e) {
        m_bMouseHover = true;
        this.Invalidate();
        base.OnMouseEnter(e);
    }
    protected override void OnMouseLeave(EventArgs e) {
        m_bMouseHover = false;
        this.Invalidate();
        base.OnMouseLeave(e);
    }

    protected override void OnMouseDown(MouseEventArgs mevent) {
        m_bMouseDown = true;
        this.Invalidate();
        base.OnMouseDown(mevent);
    }

    protected override void OnMouseUp(MouseEventArgs mevent) {
        m_bMouseDown = false;
        this.Invalidate();
        base.OnMouseUp(mevent);
    }

    protected override void OnPaint(PaintEventArgs pevent) {
        base.OnPaint(pevent);
        //因为上面调用了base会绘制原生控件 重刷一下背景清掉原生绘制 不然自己绘制的是重叠在原生绘制上
        base.OnPaintBackground(pevent);
        Graphics g = pevent.Graphics;

        StringFormat sf = new StringFormat();
        sf.Alignment = StringAlignment.Center;
        sf.LineAlignment = StringAlignment.Center;
        //处理热键 当Alt点下时
        sf.HotkeyPrefix = this.ShowKeyboardCues ? HotkeyPrefix.Show : HotkeyPrefix.Hide;
        //判断使用什么资源图
        Bitmap bmpDraw = Properties.Resources.QBtn_Normal;
        if (!this.Enabled) bmpDraw = Properties.Resources.Qbtn_Gray;
        else if (m_bMouseDown) bmpDraw = Properties.Resources.QBtn_Down;
        else if (m_bMouseHover) bmpDraw = Properties.Resources.QBtn_High;
        else if (this.Focused) bmpDraw = Properties.Resources.QBtn_Focus;
        //绘制背景(若不知道这句啥意思 参照九宫切图里面的代码)
        RenderHelper.RenderBackground(g, bmpDraw, this.ClientRectangle);
        if (!this.Enabled) {
            //绘制双重阴影文字
            g.DrawString(this.Text, this.Font, Brushes.White, this.ClientRectangle, sf);
            g.TranslateTransform(-1, -1);//左上移动一个单位坐标系
            g.DrawString(this.Text, this.Font, Brushes.DarkGray, this.ClientRectangle, sf);
            g.ResetTransform();
            return;
        }
        using (SolidBrush sb = new SolidBrush(this.ForeColor)) {
            g.DrawString(this.Text, this.Font, sb, this.ClientRectangle, sf);
        }
    }
}

分别是 正常状态的按钮 鼠标移动上去 获得焦点 禁用