Detailed explanation of the window position and window size of C# short message prompt

A short message prompt

A short message prompts Toast:

Used to present a short message, which will automatically disappear after the prompt is completed;

Features:

① Pop-up window;

② Short text can be displayed in folded lines;

③ Automatically adjust the size according to the text length;

④ After about 1.5, it will disappear automatically;

2 Pop-up window

In Winform, all windows are implemented using Form, for example:

① General window Window;

② Dialog window Dialog;

③ FloatWindow;

④ Tooltip Tooltip;

⑤ Popup window (such as menu windows, drop-down list windows);

Customize a Form class to define a window

public class myToast:Form
{

}

This window does not require borders, and its position and size are controlled by yourself.

Create and display window

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

Subform code

using System;
using ;
using ;
using ;
using ;
using .Drawing2D;
using ;
using ;
using ;
using ;
using ;
using ;

namespace Pop-up prompts
{
    public partial class Toast : Form
    {
        private string message;
        public Toast()
        {
            //Borderless             = ;
            //The background is white             = ;
        }

        public void ShowMessage(string message)
        {
             = message;

            //Manually specify the location             = ;
             = new Point(0, 0);
             = new Size(300, 100);

            //Display window            ();
        }

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

            Graphics g = ;
            int w = , h = ;
            Rectangle rect = new Rectangle(0, 0, w, h);
            (-4, -4);

            //Smooth drawing, anti-aliasing             = ;
             = ;

            if(message!=null)
            {
                StringFormat sf = new StringFormat();
                 = ;
                 = ;

                Brush brush = new SolidBrush();
                (message, , brush, rect, sf);
                ();
            }
        }
    }
}

Parent form code

using System;
using ;
using ;
using ;
using ;
using ;
using ;
using ;
using ;

namespace Pop-up prompts
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

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

3. Window location

When the toast window is displayed, it is equivalent to the center of the main window.

① Find the main window and get the location of the main window;

② Calculate the position of the toast window;

When the toast window is displayed, the focus of the main window is not deprived, and ShowWithoutActivation needs to be rewrite

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

1 Points and details

① When a control control is known, you can get the window where it is located;

Form form=();

Subform code:

using System;
using ;
using ;
using ;
using ;
using .Drawing2D;
using ;
using ;
using ;
using ;
using ;

namespace Window location
{
    public partial class Toast : Form
    {
        private string message;
        public Toast()
        {
             = ;
             = ;
             = false;
        }
        //Owner can be a child window or a control        public void ShowMessage(Control owner,string message)
        {
             = message;

             = ;
             = new Size(300, 100);

            //Find the top window where the owner is located            Form form = ();
             = form;

            //Center the toast window to center relative to the main window            Rectangle fr = new Rectangle(, );
            int x =  + ( - ) / 2;
            int y =  + ( - ) / 2;
             = new Point(x, y);

            ();
        }

        //Focus control: This window does not deprive the focus of the main window        // Otherwise, when the toast window is activated, the focus of the main window is deprived        protected override bool ShowWithoutActivation
        {
            get { return true; }
        }

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

            Graphics g = ;
            int w = , h = ;
            Rectangle rect = new Rectangle(0, 0, w, h);
            (-4, -4);

            //Smooth drawing, anti-aliasing             = ;
             = ;

            if(message!=null)
            {
                StringFormat sf = new StringFormat();
                 = ;
                 = ;

                Brush brush = new SolidBrush();
                (message, , brush, rect, sf);
                ();
            }
        }
    }
}

Parent form code

using System;
using ;
using ;
using ;
using ;
using ;
using ;
using ;
using ;

namespace Window location
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Toast toast = new Toast();
            (button1, "Chinese People's Liberation Army!");
        }
    }
}

Four Window size

The size of the Toast window should be adjusted according to the message length, such as:

(button1,"success");
(button1,"Simida");
(button1,"Programming is an art");

Use() to calculate the size of the text

Graphics g=();
SizeF size=(str,,300);
();

Note that the temporarily created Graphics need to be destroyed manually after they are used up.

Summarize

This is the article about the location and size of the C# short message prompt window. For more information about the location of the C# short message prompt window, please search for my previous article or continue browsing the related articles below. I hope everyone will support me in the future!