Formalar bilan ishlash Forma asoslari

Bevosita bo'lmagan shakllarni yaratish. Qolib yopish

Последнее обновление: 31.10.2015

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Odatiy bo'lib, Windows formalaridagi barcha shakllar to'rtburchaklar shaklida. Biroq, biz bilvosita tasodifiy shakllarni yaratishimiz mumkin. Buning uchun mintaqaning mulki ishlatiladi. Qiymat sifatida, u xuddi shu sinf mintaqasining ob'ektini oladi.

Bilvosita shakllarni yaratishda, qoida tariqasida, shaklning chegaralari ishlatilmaydi, chunki chegaralar ushbu mintaqa ob'ekti tomonidan belgilanadi. Formaning chegaralarini olib tashlash uchun FormBorderStyle formasida None qiymatini belgilash kerak.

Va e'tiborga olish kerak bo'lgan yana bir jihat-shakllarni ko'chirish, yopish, maksimal darajada oshirish va minimallashtirishdir. Ya'ni, bu holatda, odatiy shaklda bo'lgani kabi, biz shaklni yopish uchun xochni bosa olmaymiz, uni yangi joyga ko'chira olmaymiz. Shuning uchun biz ushbu dastur mantig'ini qo'shimcha ravishda aniqlashimiz kerak.

Shunday qilib, shakl kodiga o'ting va uni quyidagicha o'zgartiring:

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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 HelloApp {     public partial class Form1 : Form     {         Point moveStart; // точка для перемещения           public Form1()         {             InitializeComponent();             this.FormBorderStyle = FormBorderStyle.None;             this.BackColor = Color.Yellow;             Button button1 = new Button             {                 Location = new Point                 {                     X = this.Width / 3,                     Y = this.Height / 3                 }             };             button1.Text = "Закрыть";             button1.Click += button1_Click;             this.Controls.Add(button1); // добавляем кнопку на форму             this.Load += Form1_Load;             this.MouseDown += Form1_MouseDown;             this.MouseMove += Form1_MouseMove;         }           private void button1_Click(object sender, EventArgs e)         {             this.Close();         }           private void Form1_Load(object sender, EventArgs e)         {             System.Drawing.Drawing2D.GraphicsPath myPath = new System.Drawing.Drawing2D.GraphicsPath();             // создаем эллипс с высотой и шириной формы             myPath.AddEllipse(0, 0, this.Width, this.Height);             // создаем с помощью элипса ту область формы, которую мы хотим видеть             Region myRegion = new Region(myPath);             // устанавливаем видимую область             this.Region = myRegion;         }           private void Form1_MouseDown(object sender, MouseEventArgs e)         {             // если нажата левая кнопка мыши             if (e.Button == MouseButtons.Left)             {                 moveStart = new Point(e.X, e.Y);             }         }           private void Form1_MouseMove(object sender, MouseEventArgs e)         {             // если нажата левая кнопка мыши             if ((e.Button & MouseButtons.Left) != 0)             {                 // получаем новую точку положения формы                 Point deltaPos = new Point(e.X - moveStart.X, e.Y - moveStart.Y);                 // устанавливаем положение формы                 this.Location = new Point(this.Location.X + deltaPos.X,                   this.Location.Y + deltaPos.Y);             }         }     } }