Graphics.DrawArc 方法
定义
重要
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绘制一个弧线,表示由一对坐标、宽度和高度指定的椭圆部分。
重载
DrawArc(Pen, Rectangle, Single, Single) |
绘制一个弧线,表示由 Rectangle 结构指定的椭圆部分。 |
DrawArc(Pen, RectangleF, Single, Single) |
绘制一个弧线,表示由 RectangleF 结构指定的椭圆部分。 |
DrawArc(Pen, Int32, Int32, Int32, Int32, Int32, Int32) |
绘制一个弧线,表示由一对坐标、宽度和高度指定的椭圆部分。 |
DrawArc(Pen, Single, Single, Single, Single, Single, Single) |
绘制一个弧线,表示由一对坐标、宽度和高度指定的椭圆部分。 |
DrawArc(Pen, Rectangle, Single, Single)
- Source:
- Graphics.cs
- Source:
- Graphics.cs
绘制一个弧线,表示由 Rectangle 结构指定的椭圆部分。
public:
void DrawArc(System::Drawing::Pen ^ pen, System::Drawing::Rectangle rect, float startAngle, float sweepAngle);
public void DrawArc (System.Drawing.Pen pen, System.Drawing.Rectangle rect, float startAngle, float sweepAngle);
member this.DrawArc : System.Drawing.Pen * System.Drawing.Rectangle * single * single -> unit
Public Sub DrawArc (pen As Pen, rect As Rectangle, startAngle As Single, sweepAngle As Single)
参数
- rect
- Rectangle
定义椭圆边界的 RectangleF 结构。
- startAngle
- Single
从 x 轴到弧线起点的顺时针测量角度(以度为单位)。
- sweepAngle
- Single
从 startAngle
参数到弧的终点,以度为单位的角度。
例外
pen
null
。
示例
下面的代码示例设计用于 Windows 窗体,它需要 PaintEventArgse
,这是 Paint 事件处理程序的参数。 该代码执行以下操作:
创建黑色笔。
创建一个矩形来绑定椭圆。
定义开始(45 度)和横扫(270 度)角度。
将椭圆弧绘制到屏幕。
结果是部分椭圆缺少 x 轴的 + 和 - 45 度之间的段。
private:
void DrawArcRectangle( PaintEventArgs^ e )
{
// Create pen.
Pen^ blackPen = gcnew Pen( Color::Black,3.0f );
// Create rectangle to bound ellipse.
Rectangle rect = Rectangle(0,0,100,200);
// Create start and sweep angles on ellipse.
float startAngle = 45.0F;
float sweepAngle = 270.0F;
// Draw arc to screen.
e->Graphics->DrawArc( blackPen, rect, startAngle, sweepAngle );
}
private void DrawArcRectangle(PaintEventArgs e)
{
// Create pen.
Pen blackPen= new Pen(Color.Black, 3);
// Create rectangle to bound ellipse.
Rectangle rect = new Rectangle(0, 0, 100, 200);
// Create start and sweep angles on ellipse.
float startAngle = 45.0F;
float sweepAngle = 270.0F;
// Draw arc to screen.
e.Graphics.DrawArc(blackPen, rect, startAngle, sweepAngle);
}
Private Sub DrawArcRectangle(ByVal e As PaintEventArgs)
' Create pen.
Dim blackPen As New Pen(Color.Black, 3)
' Create rectangle to bound ellipse.
Dim rect As New Rectangle(0, 0, 100, 200)
' Create start and sweep angles on ellipse.
Dim startAngle As Single = 45.0F
Dim sweepAngle As Single = 270.0F
' Draw arc to screen.
e.Graphics.DrawArc(blackPen, rect, startAngle, sweepAngle)
End Sub
注解
此方法绘制一个弧线,它是椭圆外围的一部分。 椭圆由矩形的边界定义。 弧线是 startAngle
参数和 startAngle
+ sweepAngle
参数之间的椭圆的外围部分。
适用于
DrawArc(Pen, RectangleF, Single, Single)
- Source:
- Graphics.cs
- Source:
- Graphics.cs
绘制一个弧线,表示由 RectangleF 结构指定的椭圆部分。
public:
void DrawArc(System::Drawing::Pen ^ pen, System::Drawing::RectangleF rect, float startAngle, float sweepAngle);
public void DrawArc (System.Drawing.Pen pen, System.Drawing.RectangleF rect, float startAngle, float sweepAngle);
member this.DrawArc : System.Drawing.Pen * System.Drawing.RectangleF * single * single -> unit
Public Sub DrawArc (pen As Pen, rect As RectangleF, startAngle As Single, sweepAngle As Single)
参数
- rect
- RectangleF
定义椭圆边界的 RectangleF 结构。
- startAngle
- Single
从 x 轴到弧线起点的顺时针测量角度(以度为单位)。
- sweepAngle
- Single
从 startAngle
参数到弧的终点,以度为单位的角度。
例外
pen
null
示例
下面的代码示例设计用于 Windows 窗体,它需要 PaintEventArgse
,这是 Paint 事件处理程序的参数。 该代码执行以下操作:
创建黑色笔。
创建一个矩形来绑定椭圆。
定义开始(45 度)和横扫(270 度)角度。
将椭圆弧绘制到屏幕。
结果是部分椭圆缺少 x 轴的 + 和 - 45 度之间的段。
private:
void DrawArcRectangleF( PaintEventArgs^ e )
{
// Create pen.
Pen^ blackPen = gcnew Pen( Color::Black,3.0f );
// Create rectangle to bound ellipse.
RectangleF rect = RectangleF(0.0F,0.0F,100.0F,200.0F);
// Create start and sweep angles on ellipse.
float startAngle = 45.0F;
float sweepAngle = 270.0F;
// Draw arc to screen.
e->Graphics->DrawArc( blackPen, rect, startAngle, sweepAngle );
}
private void DrawArcRectangleF(PaintEventArgs e)
{
// Create pen.
Pen blackPen= new Pen(Color.Black, 3);
// Create rectangle to bound ellipse.
RectangleF rect = new RectangleF(0.0F, 0.0F, 100.0F, 200.0F);
// Create start and sweep angles on ellipse.
float startAngle = 45.0F;
float sweepAngle = 270.0F;
// Draw arc to screen.
e.Graphics.DrawArc(blackPen, rect, startAngle, sweepAngle);
}
Private Sub DrawArcRectangleF(ByVal e As PaintEventArgs)
' Create pen.
Dim blackPen As New Pen(Color.Black, 3)
' Create rectangle to bound ellipse.
Dim rect As New RectangleF(0.0F, 0.0F, 100.0F, 200.0F)
' Create start and sweep angles on ellipse.
Dim startAngle As Single = 45.0F
Dim sweepAngle As Single = 270.0F
' Draw arc to screen.
e.Graphics.DrawArc(blackPen, rect, startAngle, sweepAngle)
End Sub
注解
此方法绘制一个弧线,它是椭圆外围的一部分。 椭圆由矩形的边界定义。 弧线是 startAngle
参数和 startAngle
+ sweepAngle
参数之间的椭圆的外围部分。
适用于
DrawArc(Pen, Int32, Int32, Int32, Int32, Int32, Int32)
- Source:
- Graphics.cs
- Source:
- Graphics.cs
绘制一个弧线,表示由一对坐标、宽度和高度指定的椭圆部分。
public:
void DrawArc(System::Drawing::Pen ^ pen, int x, int y, int width, int height, int startAngle, int sweepAngle);
public void DrawArc (System.Drawing.Pen pen, int x, int y, int width, int height, int startAngle, int sweepAngle);
member this.DrawArc : System.Drawing.Pen * int * int * int * int * int * int -> unit
Public Sub DrawArc (pen As Pen, x As Integer, y As Integer, width As Integer, height As Integer, startAngle As Integer, sweepAngle As Integer)
参数
- x
- Int32
定义椭圆的矩形左上角的 x 坐标。
- y
- Int32
定义椭圆的矩形左上角的 y 坐标。
- width
- Int32
定义椭圆的矩形的宽度。
- height
- Int32
定义椭圆的矩形的高度。
- startAngle
- Int32
从 x 轴到弧线起点的顺时针测量角度(以度为单位)。
- sweepAngle
- Int32
从 startAngle
参数到弧的终点,以度为单位的角度。
例外
pen
null
。
示例
下面的代码示例设计用于 Windows 窗体,它需要 PaintEventArgse
,这是 Paint 事件处理程序的参数。 该代码执行以下操作:
创建黑色笔。
创建矩形的位置和大小以绑定椭圆。
定义开始(45 度)和横扫(270 度)角度。
将椭圆弧绘制到屏幕。
结果是部分椭圆缺少 x 轴的 + 和 - 45 度之间的段。
private:
void DrawArcInt( PaintEventArgs^ e )
{
// Create pen.
Pen^ blackPen = gcnew Pen( Color::Black,3.0f );
// Create coordinates of rectangle to bound ellipse.
int x = 0;
int y = 0;
int width = 100;
int height = 200;
// Create start and sweep angles on ellipse.
int startAngle = 45;
int sweepAngle = 270;
// Draw arc to screen.
e->Graphics->DrawArc( blackPen, x, y, width, height, startAngle, sweepAngle );
}
private void DrawArcInt(PaintEventArgs e)
{
// Create pen.
Pen blackPen= new Pen(Color.Black, 3);
// Create coordinates of rectangle to bound ellipse.
int x = 0;
int y = 0;
int width = 100;
int height = 200;
// Create start and sweep angles on ellipse.
int startAngle = 45;
int sweepAngle = 270;
// Draw arc to screen.
e.Graphics.DrawArc(blackPen, x, y, width, height, startAngle, sweepAngle);
}
Private Sub DrawArcInt(ByVal e As PaintEventArgs)
' Create pen.
Dim blackPen As New Pen(Color.Black, 3)
' Create coordinates of rectangle to bound ellipse.
Dim x As Integer = 0
Dim y As Integer = 0
Dim width As Integer = 100
Dim height As Integer = 200
' Create start and sweep angles on ellipse.
Dim startAngle As Integer = 45
Dim sweepAngle As Integer = 270
' Draw arc to screen.
e.Graphics.DrawArc(blackPen, x, y, width, height, startAngle, _
sweepAngle)
End Sub
注解
此方法绘制一个弧线,它是椭圆外围的一部分。 椭圆由矩形的边界定义。 弧线是 startAngle
参数和 startAngle
+ sweepAngle
参数之间的椭圆的外围部分。
适用于
DrawArc(Pen, Single, Single, Single, Single, Single, Single)
- Source:
- Graphics.cs
- Source:
- Graphics.cs
绘制一个弧线,表示由一对坐标、宽度和高度指定的椭圆部分。
public:
void DrawArc(System::Drawing::Pen ^ pen, float x, float y, float width, float height, float startAngle, float sweepAngle);
public void DrawArc (System.Drawing.Pen pen, float x, float y, float width, float height, float startAngle, float sweepAngle);
member this.DrawArc : System.Drawing.Pen * single * single * single * single * single * single -> unit
Public Sub DrawArc (pen As Pen, x As Single, y As Single, width As Single, height As Single, startAngle As Single, sweepAngle As Single)
参数
- x
- Single
定义椭圆的矩形左上角的 x 坐标。
- y
- Single
定义椭圆的矩形左上角的 y 坐标。
- width
- Single
定义椭圆的矩形的宽度。
- height
- Single
定义椭圆的矩形的高度。
- startAngle
- Single
从 x 轴到弧线起点的顺时针测量角度(以度为单位)。
- sweepAngle
- Single
从 startAngle
参数到弧的终点,以度为单位的角度。
例外
pen
null
。
示例
下面的代码示例设计用于 Windows 窗体,它需要 PaintEventArgse
,这是 Paint 事件处理程序的参数。 该代码执行以下操作:
创建黑色笔。
创建矩形的位置和大小以绑定椭圆。
定义开始(45 度)和横扫(270 度)角度。
将椭圆弧绘制到屏幕。
结果是部分椭圆缺少 x 轴的 + 和 - 45 度之间的段。
private:
void DrawArcFloat( PaintEventArgs^ e )
{
// Create pen.
Pen^ blackPen = gcnew Pen( Color::Black,3.0f );
// Create coordinates of rectangle to bound ellipse.
float x = 0.0F;
float y = 0.0F;
float width = 100.0F;
float height = 200.0F;
// Create start and sweep angles on ellipse.
float startAngle = 45.0F;
float sweepAngle = 270.0F;
// Draw arc to screen.
e->Graphics->DrawArc( blackPen, x, y, width, height, startAngle, sweepAngle );
}
private void DrawArcFloat(PaintEventArgs e)
{
// Create pen.
Pen blackPen= new Pen(Color.Black, 3);
// Create coordinates of rectangle to bound ellipse.
float x = 0.0F;
float y = 0.0F;
float width = 100.0F;
float height = 200.0F;
// Create start and sweep angles on ellipse.
float startAngle = 45.0F;
float sweepAngle = 270.0F;
// Draw arc to screen.
e.Graphics.DrawArc(blackPen, x, y, width, height, startAngle, sweepAngle);
}
Private Sub DrawArcFloat(ByVal e As PaintEventArgs)
' Create pen.
Dim blackPen As New Pen(Color.Black, 3)
' Create coordinates of rectangle to bound ellipse.
Dim x As Single = 0.0F
Dim y As Single = 0.0F
Dim width As Single = 100.0F
Dim height As Single = 200.0F
' Create start and sweep angles on ellipse.
Dim startAngle As Single = 45.0F
Dim sweepAngle As Single = 270.0F
' Draw arc to screen.
e.Graphics.DrawArc(blackPen, x, y, width, height, startAngle, _
sweepAngle)
End Sub
注解
此方法绘制一个弧线,它是椭圆外围的一部分。 椭圆由矩形的边界定义。 弧线是 startAngle
参数和 startAngle
+ sweepAngle
参数之间的椭圆的外围部分。