C# Graphics.Clear()用法及代碼示例

Graphics.Clear(color)方法用於清除畫布並使用指定的背景顏色對其進行繪製。

用法： public void Clear (System.Drawing.Color color);

參數:

color: Color identifier which contains RGB values, to colour the background of canvas.

範例1：

// C# snippet to print GeeksForGeeks 
using System; 
using System.Drawing; 
using System.Drawing.Printing; 
using System.Windows.Forms; 
namespace GFG { 
  
class PrintableForm : Form { 
  
    // Main Method 
    public static void Main() 
    { 
        Application.Run(new PrintableForm()); 
    } 
    public PrintableForm() 
    { 
        ResizeRedraw = true; 
    } 
  
    protected override void OnPaint(PaintEventArgs e) 
    { 
        Font font = new Font("Arial", 16); 
        SolidBrush brush = new SolidBrush(Color.Black); 
        PointF point = new PointF(10.0F, 10.0F); 
        e.Graphics.DrawString("GeeksForGeeks", font, brush, point); 
    } 
} 
}

輸出：

範例2：

// C# program to illustrate the Clear Method 
// C# snippet to print GeeksForGeeks 
using System; 
using System.Drawing; 
using System.Drawing.Printing; 
using System.Windows.Forms; 
namespace GFG { 
  
class PrintableForm : Form { 
  
    // Main Method 
    public static void Main() 
    { 
        Application.Run(new PrintableForm()); 
    } 
    public PrintableForm() 
    { 
        ResizeRedraw = true; 
    } 
  
    protected override void
    OnPaint(PaintEventArgs e) 
    { 
        e.Graphics.Clear(Color.Coral); 
    } 
} 
}

輸出：

參考：

https://docs.microsoft.com/en-us/dotnet/api/system.drawing.graphics.clear?view=netframework-4.7.2

相關用法

注：本文由純淨天空篩選整理自ShivamChauhan5大神的英文原創作品 Graphics.Clear() Method in C# with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。