■ 화면 돋보기를 사용하는 방법을 보여준다.
▶ MainForm.cs
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namespace TestProject; /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 스케일 비율 /// </summary> private double scaleRate = 2.0d; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); KeyPreview = true; this.timer.Interval = 50; MouseWheel += Form_MouseWheel; this.timer.Tick += timer_Tick; this.scaleInButton.MouseClick += scaleInButton_MouseClick; this.scaleOutButton.MouseClick += scaleOutButton_MouseClick; this.timer.Start(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 폼 마우스 휠 처리하기 - Form_MouseWheel(sender, e) /// <summary> /// 폼 마우스 휠 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Form_MouseWheel(object sender, MouseEventArgs e) { if(e.Delta < 0 && this.scaleRate > 0.2d) { this.scaleRate -= 0.1d; } else if(e.Delta > 0 && this.scaleRate < 5.0d) { this.scaleRate += 0.1d; } } #endregion #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { this.scaleLabel.Text = $"배율 : {this.scaleRate:#.00}"; Size size = new Size(this.pictureBox.Width, this.pictureBox.Height); Bitmap bitmap = new Bitmap((int)(size.Width / this.scaleRate), (int)(size.Height / this.scaleRate)); using Graphics graphics = Graphics.FromImage(bitmap); graphics.CopyFromScreen ( (int)(MousePosition.X - size.Width / (this.scaleRate * 2)), (int)(MousePosition.Y - size.Height / (this.scaleRate * 2)), 0, 0, size, CopyPixelOperation.SourceCopy ); Bitmap temporaryBitmap = this.pictureBox.Image as Bitmap; this.pictureBox.Image = bitmap; if(temporaryBitmap != null) { temporaryBitmap.Dispose(); } } #endregion #region 확대 버튼 클릭시 처리하기 - scaleInButton_MouseClick(sender, e) /// <summary> /// 확대 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void scaleInButton_MouseClick(object sender, MouseEventArgs e) { if(e.Button == MouseButtons.Left && this.scaleRate < 5.0d) { this.scaleRate += 0.1d; } } #endregion #region 축소 버튼 클릭시 처리하기 - scaleOutButton_MouseClick(sender, e) /// <summary> /// 축소 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void scaleOutButton_MouseClick(object sender, MouseEventArgs e) { if(e.Button == MouseButtons.Left && this.scaleRate > 0.2d) { this.scaleRate -= 0.1d; } } #endregion } |
