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C#短消息提示窗口位置及窗口大小詳解

 更新時(shí)間:2022年12月06日 15:28:16   作者:鋼鐵男兒  
在我們的生活中無論是使用QQ,360安全衛(wèi)士等軟件的過程中,經(jīng)常會(huì)遇到從右下方的托盤處彈出一個(gè)消息提示窗,比如新聞,產(chǎn)品更新等內(nèi)容,下面這篇文章主要給大家介紹了關(guān)于C#短消息提示窗口位置及窗口大小的相關(guān)資料,需要的朋友可以參考下

一 短消息提示

短消息提示Toast:

用于呈現(xiàn)一條短消息,提示完成后即可自動(dòng)消失;

特點(diǎn):

① 彈出式窗口;

② 短文本,可以折行顯示;

③ 根據(jù)文本長度,自動(dòng)調(diào)整大??;

④ 約1.5后,自動(dòng)消失;

二 彈出窗口

在Winform中,所有的窗口都用Form實(shí)現(xiàn),比如:

① 常規(guī)窗口Window;

② 對(duì)話框窗口Dialog;

③ 懸浮窗口FloatWindow;

④ 工具提示Tooltip;

⑤ 彈出式窗口Popup(如菜單窗口、下拉列表窗口);

自定義一個(gè)Form類,即可定義一個(gè)窗口

public class myToast:Form
{

}

本窗口不需要邊框,位置和大小都是自己控制的。

創(chuàng)建并顯示窗口

myToast toast=new myToast();
toast.ShowMessage("This is a totas!");

子窗體代碼

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

namespace 彈窗提示
{
    public partial class Toast : Form
    {
        private string message;
        public Toast()
        {
            //無邊框
            this.FormBorderStyle = FormBorderStyle.None;
            //背景白色
            this.BackColor = Color.White;
        }

        public void ShowMessage(string message)
        {
            this.message = message;

            //手動(dòng)指定位置
            this.StartPosition = FormStartPosition.Manual;
            this.Location = new Point(0, 0);
            this.Size = new Size(300, 100);

            //顯示窗口
            this.Show();
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            Graphics g = e.Graphics;
            int w = this.Width, h = this.Height;
            Rectangle rect = new Rectangle(0, 0, w, h);
            rect.Inflate(-4, -4);

            //平滑繪制,反鋸齒
            g.SmoothingMode = SmoothingMode.HighQuality;
            g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;

            if(message!=null)
            {
                StringFormat sf = new StringFormat();
                sf.Alignment = StringAlignment.Center;
                sf.LineAlignment = StringAlignment.Center;

                Brush brush = new SolidBrush(Color.Black);
                g.DrawString(message, this.Font, brush, rect, sf);
                brush.Dispose();
            }
        }
    }
}

父窗體代碼

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;

namespace 彈窗提示
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Toast toast = new Toast();
            toast.ShowMessage("This is a toast!");
        }
    }
}

三 窗口位置

toast窗口顯示時(shí),相當(dāng)于主窗口位置居中。

① 找到主窗口,得到主窗口的位置;

② 計(jì)算toast窗口的位置;

toast窗口顯示時(shí),不剝奪主窗口的焦點(diǎn),需要重寫ShowWithoutActivation

protected override bool ShowWithoutActivation
{
   get
   {
      return true;
   }
}

1 要點(diǎn)與細(xì)節(jié)

① 已知一個(gè)控件Control,可以得到它所在的窗口;

Form form=ctrl.FindForm();

子窗體代碼:

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

namespace 窗口位置
{
    public partial class Toast : Form
    {
        private string message;
        public Toast()
        {
            this.FormBorderStyle = FormBorderStyle.None;
            this.BackColor = Color.White;
            this.ShowInTaskbar = false;
        }
        //owner 可以是子窗口也可以是控件
        public void ShowMessage(Control owner,string message)
        {
            this.message = message;

            this.StartPosition = FormStartPosition.Manual;
            this.Size = new Size(300, 100);

            //找到owner所在的頂級(jí)窗口
            Form form = owner.FindForm();
            this.Owner = form;

            //使toast窗口相對(duì)主窗口居中
            Rectangle fr = new Rectangle(form.Location, form.Size);
            int x = fr.X + (fr.Width - this.Width) / 2;
            int y = fr.Y + (fr.Width - this.Height) / 2;
            this.Location = new Point(x, y);

            this.Show();
        }

        //焦點(diǎn)控制:本窗口不剝奪主窗口的焦點(diǎn)
        //否則,當(dāng)toast窗口激活時(shí),主窗口焦點(diǎn)被剝奪
        protected override bool ShowWithoutActivation
        {
            get { return true; }
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            Graphics g = e.Graphics;
            int w = this.Width, h = this.Height;
            Rectangle rect = new Rectangle(0, 0, w, h);
            rect.Inflate(-4, -4);

            //平滑繪制,反鋸齒
            g.SmoothingMode = SmoothingMode.HighQuality;
            g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;

            if(message!=null)
            {
                StringFormat sf = new StringFormat();
                sf.Alignment = StringAlignment.Center;
                sf.LineAlignment = StringAlignment.Center;

                Brush brush = new SolidBrush(Color.Black);
                g.DrawString(message, this.Font, brush, rect, sf);
                brush.Dispose();
            }
        }
    }
}

父窗體代碼

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;

namespace 窗口位置
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Toast toast = new Toast();
            toast.ShowMessage(button1, "中國人民解放軍!");
        }
    }
}

四 窗口大小

Toast的窗口的大小,應(yīng)該根據(jù)消息長度來調(diào)整,比如:

toast.ShowMessage(button1,"成功");
toast.ShowMessage(button1,"思密達(dá)");
toast.ShowMessage(button1,"編程是一種藝術(shù)");

使用Graphics.MeasureString()可以測算文本的尺寸

Graphics g=this.CreateGraphics();
SizeF size=g.MeasureString(str,this.Font,300);
g.Dispose();

注意,臨時(shí)創(chuàng)建的Graphics用完之后需要手工銷毀。

總結(jié)

到此這篇關(guān)于C#短消息提示窗口位置及窗口大小的文章就介紹到這了,更多相關(guān)C#短消息提示窗口位置內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家!

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