cyf
66 lines
2.2 KiB
C#
66 lines
2.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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using System.Drawing;
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namespace NewMyFormDesigner
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{
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public partial class TextBoxEx : TextBox
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{
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private Color borderColor = Color.Black; // 设置默认的边框颜色
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private static int WM_NCPAINT = 0x0085; // WM_NCPAINT message
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private static int WM_ERASEBKGND = 0x0014; // WM_ERASEBKGND message
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private static int WM_PAINT = 0x000F; // WM_PAINT message
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public TextBoxEx()
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{
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// This call is required by the Windows.Forms Form Designer.
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InitializeComponent();
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// TODO: Add any initialization after the InitializeComponent call
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this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
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this.BackColor = Color.Transparent;
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this.SetStyle(ControlStyles.UserPaint, false);
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this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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this.SetStyle(ControlStyles.DoubleBuffer, true);
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}
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public void DrawBorder(ref Message message, int width, int height)
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{
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if (message.Msg == WM_NCPAINT || message.Msg == WM_ERASEBKGND ||
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message.Msg == WM_PAINT)
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{
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using (Graphics graphics = Graphics.FromHwnd(base.Handle))
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{
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Rectangle rectangle = new Rectangle(0, 0, width, height);
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ControlPaint.DrawBorder(graphics, rectangle,
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Color.White, 0, ButtonBorderStyle.None,
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Color.White, 0, ButtonBorderStyle.None,
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Color.White, 0, ButtonBorderStyle.None,
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BorderColor, 1, ButtonBorderStyle.Solid);
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}
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}
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}
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[Description("设置边框颜色")]
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public Color BorderColor
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{
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get { return borderColor; }
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set { borderColor = value; }
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}
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protected override void WndProc(ref Message m)
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{
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base.WndProc(ref m);
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DrawBorder(ref m, this.Width, this.Height);
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}
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}
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}
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