WINform做对话框

最新推荐文章于 2023-10-16 18:29:54 发布

原创最新推荐文章于 2023-10-16 18:29:54 发布 · 494 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#c#

此篇博客介绍了如何在Windows Forms中创建一个美观的登录界面，使用了渐变背景和无边框拖动效果。开发者分享了Frmlogin类中的OnPaint方法和鼠标事件处理，展示了如何利用LinearGradientBrush绘制背景，以及如何实现窗口的平滑移动。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing.Drawing2D;

namespace thinger.com.Pro1
{
public partial class Frmlogin : Form
{
public Frmlogin()
{
InitializeComponent();
}

    protected override void OnPaint(PaintEventArgs e)
    {
        base.OnPaint(e);
        //获取画布
        Graphics g = e.Graphics;

        Rectangle rec = new Rectangle(0,0,this.Width, this.Height);
        LinearGradientBrush brush = new LinearGradientBrush(
            rec, Color.FromArgb(225, 101, 127), Color.FromArgb(93, 127, 124),
            LinearGradientMode.BackwardDiagonal);
        g.FillRectangle(brush, rec);

    }

    private void label1_Click(object sender, EventArgs e)
    {

    }

    //无边框拖动，一个事件可以被很多事件引用，比如其他字框也可以引用
    //lal_title_MouseDown与lal_title_MouseMove
    private Point mpoint;
    private void lal_title_MouseDown(object sender, MouseEventArgs e)
    {
        mpoint = e.Location;
    }

    private void lal_title_MouseMove(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left) 
        {
            this.Location = new Point(this.Location.X + e.X - mpoint.X,
                this.Location.Y + e.Y - mpoint.Y);//+上鼠标移动的距离:e.X,减去原来的距离mpoint.X
        }
    }
}

}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace thinger.com.Pro1
{
static class Program
{
///
/// 应用程序的主入口点。
///
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);

        Frmlogin frm = new Frmlogin();
        DialogResult dr = frm.ShowDialog();

        if (dr == DialogResult.OK)
        {
            Application.Run(new Frmlogin());
        }
        //Application.Run(new Frmlogin());
    }
}

}