c#改变winform窗体标题的字体大小背景和颜色

最新推荐文章于 2025-07-25 14:41:35 发布

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最新推荐文章于 2025-07-25 14:41:35 发布

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分类专栏： C# 文章标签： c# winform

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本文介绍了一个使用 C# 实现的自定义 Windows Forms 应用程序窗口样式的方法，包括通过拦截特定消息来绘制窗体标题栏背景和文本，并实现标题栏点击事件反馈。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Drawing.Drawing2D;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {

        [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(3, 3, Width-6, 21);
            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("Form1", 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;
            }
        }

        public Form1()
        {
            InitializeComponent();
        }


    }
}