Graphics.DrawEllipse 方法
定義
重要
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繪製由一對座標、高度和寬度所指定的周框所定義的橢圓形。
多載
DrawEllipse(Pen, Int32, Int32, Int32, Int32) |
繪製由矩形左上角座標所指定的周框所定義的橢圓形、高度和寬度。 |
DrawEllipse(Pen, Single, Single, Single, Single) |
繪製由一對座標、高度和寬度所指定的周框所定義的橢圓形。 |
DrawEllipse(Pen, RectangleF) |
繪製由周框 RectangleF定義的省略號。 |
DrawEllipse(Pen, Rectangle) |
繪製由周框 Rectangle 結構指定的省略號。 |
DrawEllipse(Pen, Int32, Int32, Int32, Int32)
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
繪製由矩形左上角座標所指定的周框所定義的橢圓形、高度和寬度。
public:
void DrawEllipse(System::Drawing::Pen ^ pen, int x, int y, int width, int height);
public void DrawEllipse (System.Drawing.Pen pen, int x, int y, int width, int height);
member this.DrawEllipse : System.Drawing.Pen * int * int * int * int -> unit
Public Sub DrawEllipse (pen As Pen, x As Integer, y As Integer, width As Integer, height As Integer)
參數
- x
- Int32
定義橢圓形之周框左上角的 X 座標。
- y
- Int32
定義橢圓形之周框左上角的 Y 座標。
- width
- Int32
定義橢圓形的周框寬度。
- height
- Int32
定義橢圓形的周框高度。
例外狀況
pen
null
。
範例
下列程式代碼範例是專為搭配 Windows Forms 使用而設計,而且需要 PaintEventArgse
,這是 Paint 事件處理程式的參數。 程式代碼會執行下列動作:
建立黑色畫筆。
建立矩形的位置和大小,以系結橢圓形。
將省略號繪製到螢幕。
private:
void DrawEllipseInt( PaintEventArgs^ e )
{
// Create pen.
Pen^ blackPen = gcnew Pen( Color::Black,3.0f );
// Create location and size of ellipse.
int x = 0;
int y = 0;
int width = 200;
int height = 100;
// Draw ellipse to screen.
e->Graphics->DrawEllipse( blackPen, x, y, width, height );
}
private void DrawEllipseInt(PaintEventArgs e)
{
// Create pen.
Pen blackPen = new Pen(Color.Black, 3);
// Create location and size of ellipse.
int x = 0;
int y = 0;
int width = 200;
int height = 100;
// Draw ellipse to screen.
e.Graphics.DrawEllipse(blackPen, x, y, width, height);
}
Private Sub DrawEllipseInt(ByVal e As PaintEventArgs)
' Create pen.
Dim blackPen As New Pen(Color.Black, 3)
' Create location and size of ellipse.
Dim x As Integer = 0
Dim y As Integer = 0
Dim width As Integer = 200
Dim height As Integer = 100
' Draw ellipse to screen.
e.Graphics.DrawEllipse(blackPen, x, y, width, height)
End Sub
備註
這個方法會繪製由 x
、y
、width
和 height
參數所描述的周框所定義的橢圓形。
適用於
DrawEllipse(Pen, Single, Single, Single, Single)
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
繪製由一對座標、高度和寬度所指定的周框所定義的橢圓形。
public:
void DrawEllipse(System::Drawing::Pen ^ pen, float x, float y, float width, float height);
public void DrawEllipse (System.Drawing.Pen pen, float x, float y, float width, float height);
member this.DrawEllipse : System.Drawing.Pen * single * single * single * single -> unit
Public Sub DrawEllipse (pen As Pen, x As Single, y As Single, width As Single, height As Single)
參數
- x
- Single
定義橢圓形之周框左上角的 X 座標。
- y
- Single
定義橢圓形之周框左上角的 Y 座標。
- width
- Single
定義橢圓形的周框寬度。
- height
- Single
定義橢圓形的周框高度。
例外狀況
pen
null
。
範例
下列程式代碼範例是專為搭配 Windows Forms 使用而設計,而且需要 PaintEventArgse
,這是 Paint 事件處理程式的參數。 程式代碼會執行下列動作:
建立黑色畫筆。
建立矩形的位置和大小,以系結橢圓形。
將省略號繪製到螢幕。
private:
void DrawEllipseFloat( PaintEventArgs^ e )
{
// Create pen.
Pen^ blackPen = gcnew Pen( Color::Black,3.0f );
// Create location and size of ellipse.
float x = 0.0F;
float y = 0.0F;
float width = 200.0F;
float height = 100.0F;
// Draw ellipse to screen.
e->Graphics->DrawEllipse( blackPen, x, y, width, height );
}
private void DrawEllipseFloat(PaintEventArgs e)
{
// Create pen.
Pen blackPen = new Pen(Color.Black, 3);
// Create location and size of ellipse.
float x = 0.0F;
float y = 0.0F;
float width = 200.0F;
float height = 100.0F;
// Draw ellipse to screen.
e.Graphics.DrawEllipse(blackPen, x, y, width, height);
}
Private Sub DrawEllipseFloat(ByVal e As PaintEventArgs)
' Create pen.
Dim blackPen As New Pen(Color.Black, 3)
' Create location and size of ellipse.
Dim x As Single = 0.0F
Dim y As Single = 0.0F
Dim width As Single = 200.0F
Dim height As Single = 100.0F
' Draw ellipse to screen.
e.Graphics.DrawEllipse(blackPen, x, y, width, height)
End Sub
備註
這個方法會繪製由 x
、y
、width
和 height
參數所描述的周框所定義的橢圓形。
適用於
DrawEllipse(Pen, RectangleF)
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
繪製由周框 RectangleF定義的省略號。
public:
void DrawEllipse(System::Drawing::Pen ^ pen, System::Drawing::RectangleF rect);
public void DrawEllipse (System.Drawing.Pen pen, System.Drawing.RectangleF rect);
member this.DrawEllipse : System.Drawing.Pen * System.Drawing.RectangleF -> unit
Public Sub DrawEllipse (pen As Pen, rect As RectangleF)
參數
- rect
- RectangleF
RectangleF 結構,定義橢圓形的界限。
例外狀況
pen
null
。
範例
下列程式代碼範例是專為搭配 Windows Forms 使用而設計,而且需要 PaintEventArgse
,這是 Paint 事件處理程式的參數。 程式代碼會執行下列動作:
建立黑色畫筆。
建立矩形來系結橢圓形。
將省略號繪製到螢幕。
private:
void DrawEllipseRectangleF( PaintEventArgs^ e )
{
// Create pen.
Pen^ blackPen = gcnew Pen( Color::Black,3.0f );
// Create rectangle for ellipse.
RectangleF rect = RectangleF(0.0F,0.0F,200.0F,100.0F);
// Draw ellipse to screen.
e->Graphics->DrawEllipse( blackPen, rect );
}
private void DrawEllipseRectangleF(PaintEventArgs e)
{
// Create pen.
Pen blackPen = new Pen(Color.Black, 3);
// Create rectangle for ellipse.
RectangleF rect = new RectangleF(0.0F, 0.0F, 200.0F, 100.0F);
// Draw ellipse to screen.
e.Graphics.DrawEllipse(blackPen, rect);
}
Private Sub DrawEllipseRectangleF(ByVal e As PaintEventArgs)
' Create pen.
Dim blackPen As New Pen(Color.Black, 3)
' Create rectangle for ellipse.
Dim rect As New RectangleF(0.0F, 0.0F, 200.0F, 100.0F)
' Draw ellipse to screen.
e.Graphics.DrawEllipse(blackPen, rect)
End Sub
備註
這個方法會繪製由 rect
參數所指定的周框所定義的橢圓形。
適用於
DrawEllipse(Pen, Rectangle)
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
- 來源:
- Graphics.cs
繪製由周框 Rectangle 結構指定的省略號。
public:
void DrawEllipse(System::Drawing::Pen ^ pen, System::Drawing::Rectangle rect);
public void DrawEllipse (System.Drawing.Pen pen, System.Drawing.Rectangle rect);
member this.DrawEllipse : System.Drawing.Pen * System.Drawing.Rectangle -> unit
Public Sub DrawEllipse (pen As Pen, rect As Rectangle)
參數
例外狀況
pen
null
。
範例
下列程式代碼範例是專為搭配 Windows Forms 使用而設計,而且需要 PaintEventArgse
,這是 Paint 事件處理程式的參數。 程式代碼會執行下列動作:
建立黑色畫筆。
建立矩形來系結橢圓形。
將省略號繪製到螢幕。
private:
void DrawEllipseRectangle( PaintEventArgs^ e )
{
// Create pen.
Pen^ blackPen = gcnew Pen( Color::Black,3.0f );
// Create rectangle for ellipse.
Rectangle rect = Rectangle(0,0,200,100);
// Draw ellipse to screen.
e->Graphics->DrawEllipse( blackPen, rect );
}
private void DrawEllipseRectangle(PaintEventArgs e)
{
// Create pen.
Pen blackPen = new Pen(Color.Black, 3);
// Create rectangle for ellipse.
Rectangle rect = new Rectangle(0, 0, 200, 100);
// Draw ellipse to screen.
e.Graphics.DrawEllipse(blackPen, rect);
}
Private Sub DrawEllipseRectangle(ByVal e As PaintEventArgs)
' Create pen.
Dim blackPen As New Pen(Color.Black, 3)
' Create rectangle for ellipse.
Dim rect As New Rectangle(0, 0, 200, 100)
' Draw ellipse to screen.
e.Graphics.DrawEllipse(blackPen, rect)
End Sub
備註
這個方法會繪製由 rect
參數所指定的周框所定義的橢圓形。