C#短消息提示窗口位置及窗口大小詳解
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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