winform窗体边框最小化旁边添加自定义按钮

2013-06-18 11:02:08 1.2k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

ShardingSphere-JDBC 关键字问题这里得到的提示就是，假设一个老库一堆表，只对个别表进行分表。引入sharding后虽然指定了分表的bindingTables，其余的走default-data-source就是默认不分表的。但是sharding会接管数据源，老表用默认的mybatis正常，sharding可能会报错。preciseAlgorithmClassName对应的是类名，注意yaml的缩进。这不是常见的没有配置sharding数据源导致empty的错误。使用sharding的时候，遇到了两个问题。... 阅读详情

如图:

想要实现和右面三个按钮一样的效果，应该怎么弄？
代码如下:



        [DllImport("user32.dll")]

        private static extern IntPtr GetWindowDC(IntPtr hWnd);

        [DllImport("user32.dll")]

        private static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);



        private const int WM_NCPAINT = 0x0085;

        private const int WM_NCACTIVATE = 0x0086;

        private const int WM_NCLBUTTONDOWN = 0x00A1;

        protected override void WndProc(ref Message m)

        {

            base.WndProc(ref m);

            Rectangle vRectangle = new Rectangle((Width + 105) / 2, 6, 23, 20);

            switch (m.Msg)

            {

                case WM_NCPAINT:

                case WM_NCACTIVATE:

                    IntPtr vHandle = GetWindowDC(m.HWnd);

                    Graphics vGraphics = Graphics.FromHdc(vHandle);

                    vGraphics.FillRectangle(new LinearGradientBrush(vRectangle,

                        Color.Pink, Color.Purple, LinearGradientMode.BackwardDiagonal),

                        vRectangle);



                    StringFormat vStringFormat = new StringFormat();

                    vStringFormat.Alignment = StringAlignment.Center;

                    vStringFormat.LineAlignment = StringAlignment.Center;

                    vGraphics.DrawString("…", Font, Brushes.BlanchedAlmond,

                        vRectangle, vStringFormat);



                    vGraphics.Dispose();

                    ReleaseDC(m.HWnd, vHandle);

                    break;

                case WM_NCLBUTTONDOWN:

                    Point vPoint = new Point((int)m.LParam);

                    vPoint.Offset(-Left, -Top);

                    if (vRectangle.Contains(vPoint))

                        MessageBox.Show(vPoint.ToString());

                    break;

            }

        }