winform设置button的边框颜色，或取消边框颜色，不显示边框

winform设置边框颜色不像webform那么简单，可以通过设置FlatAppearance，也可以通过重绘实现。

一、设置按钮本身属性

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buttonBubufx.FlatStyle = FlatStyle.Flat; buttonBubufx.BackColor = Color.SkyBlue; buttonBubufx.FlatAppearance.BorderColor = buttonBubufx.BackColor;

　　

 

二、重绘，设置按钮的Region

 

 

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private static int WM_NCPAINT = 0x0085;        private static int WM_ERASEBKGND = 0x0014;        private static int WM_PAINT = 0x000F;          [DllImport("user32.dll")]        static extern IntPtr GetDCEx(IntPtr hwnd, IntPtr hrgnclip, uint fdwOptions);          [DllImport("user32.dll")]        static extern int ReleaseDC(IntPtr hwnd, IntPtr hDC);          protected override void WndProc(ref Message m)        {            base.WndProc(ref m);            if (m.Msg == WM_NCPAINT || m.Msg == WM_ERASEBKGND || m.Msg == WM_PAINT)            {                IntPtr hdc = GetDCEx(m.HWnd, (IntPtr)1, 1 | 0x0020);                  if (hdc != IntPtr.Zero)                {                    Graphics graphics = Graphics.FromHdc(hdc);                    Color borderColor = Color.HotPink;                      Rectangle rectangle = new Rectangle(textBox1.Location.X, textBox1.Location.Y + (25), textBox1.Width, textBox1.Height);                    ControlPaint.DrawBorder(graphics, rectangle, borderColor, ButtonBorderStyle.Solid);                    m.Result = (IntPtr)1;                    ReleaseDC(m.HWnd, hdc);                  }            }        }

　　

原帖地址：winform设置button的边框颜色，或取消边框颜色，不显示边框。

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