Shape.DrawToBitmap 方法

项目
10/25/2012

支持呈现到指定的位图。

命名空间： Microsoft.VisualBasic.PowerPacks
程序集： Microsoft.VisualBasic.PowerPacks.Vs（在 Microsoft.VisualBasic.PowerPacks.Vs.dll 中）

语法

声明
Public MustOverride Sub DrawToBitmap ( _
    bitmap As Bitmap, _
    targetBounds As Rectangle _
)

public abstract void DrawToBitmap(
    Bitmap bitmap,
    Rectangle targetBounds
)

public:
virtual void DrawToBitmap(
    Bitmap^ bitmap, 
    Rectangle targetBounds
) abstract

abstract DrawToBitmap : 
        bitmap:Bitmap * 
        targetBounds:Rectangle -> unit

public abstract function DrawToBitmap(
    bitmap : Bitmap, 
    targetBounds : Rectangle
)

参数

bitmap
类型：System.Drawing.Bitmap
要绘制的 Bitmap 。

targetBounds
类型：System.Drawing.Rectangle
中 LineShape 呈现的 Rectangle 。

备注

如果 X 或 Y 协调或 targetBounds 的 Width 或 Height 参数小于 0， ArgumentException 将引发异常。

示例

下面的示例演示如何使用 DrawToBitmap 方法绘制 LineShape 在 PictureBox 控件之上。

Dim pic As New System.Drawing.Bitmap(Me.PictureBox1.Image,
 PictureBox1.Width, PictureBox1.Height)
Dim rect As New System.Drawing.Rectangle(LineShape1.X1,
    LineShape1.Y1, LineShape1.X2 - LineShape1.X1,
    LineShape1.Y2 - LineShape1.Y1)
LineShape1.DrawToBitmap(pic, rect)
PictureBox2.Image = pic

System.Drawing.Bitmap pic = new System.Drawing.Bitmap(this.pictureBox1.Image, 
    pictureBox1.Width, pictureBox1.Height);
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(lineShape1.X1, 
    lineShape1.Y1, lineShape1.X2 - lineShape1.X1, lineShape1.Y2 - lineShape1.Y1);
lineShape1.DrawToBitmap(pic, rect);
pictureBox2.Image = pic;