Question

本网站上的其他解决方案对我没有用，所以我想弄清楚我做错了什么：

这是WinForm App

private void dk_buff_box_Paint(object sender, PaintEventArgs e)
    {
        Console.WriteLine("INSIDE!!");
        ControlPaint.DrawBorder(e.Graphics, this.ClientRectangle, Color.Red, ButtonBorderStyle.Solid);
        GroupBox box = sender as GroupBox;
        DrawGroupBox(box, e.Graphics, Color.Red, Color.Black);
    }
    private void DrawGroupBox(GroupBox box, Graphics g, Color textColor, Color borderColor)
    {
        if (box != null)
        {
            Brush textBrush = new SolidBrush(textColor);
            Brush borderBrush = new SolidBrush(borderColor);
            Pen borderPen = new Pen(borderBrush);
            SizeF strSize = g.MeasureString(box.Text, box.Font);
            Rectangle rect = new Rectangle(box.ClientRectangle.X,
                                           box.ClientRectangle.Y + (int)(strSize.Height / 2),
                                           box.ClientRectangle.Width - 1,
                                           box.ClientRectangle.Height - (int)(strSize.Height / 2) - 1);

            // Clear text and border
            g.Clear(this.BackColor);

            // Draw text
            g.DrawString(box.Text, box.Font, textBrush, box.Padding.Left, 0);

            // Drawing Border
            //Left
            g.DrawLine(borderPen, rect.Location, new Point(rect.X, rect.Y + rect.Height));
            //Right
            g.DrawLine(borderPen, new Point(rect.X + rect.Width, rect.Y), new Point(rect.X + rect.Width, rect.Y + rect.Height));
            //Bottom
            g.DrawLine(borderPen, new Point(rect.X, rect.Y + rect.Height), new Point(rect.X + rect.Width, rect.Y + rect.Height));
            //Top1
            g.DrawLine(borderPen, new Point(rect.X, rect.Y), new Point(rect.X + box.Padding.Left, rect.Y));
            //Top2
            g.DrawLine(borderPen, new Point(rect.X + box.Padding.Left + (int)(strSize.Width), rect.Y), new Point(rect.X + rect.Width, rect.Y));
        }
    }

此代码永远不会触发“INSIDE !!”到我的控制台输出和组合框周围的边框（称为dk_buff_box）总是灰色且非常轻。（我假设这是默认的？）

我需要做些什么才能让这个边框改变颜色？我有几个一起工作的.cs文件（控件）主.cs文件是form1.cs。上面的代码位于一个名为darkknightinfo.cs

的独立.cs文件中

代码应该在主窗体上吗？还是应该在.cs文件上有实际的组合框？

我需要做些什么才能让_Paint（）正确激活并运行代码来更改组框边框颜色？

Answer 1

如果您正在制作winForm应用程序，则必须以编程方式打开控制台，而不能仅使用Console.WriteLine打开它。您还使用了PaintEventArgs，用于（顾名思义）Paint，bitmap等。

在GroupBox C＃周围画一个边框

1 个答案: