Pen 建構函式
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
使用指定的色彩,初始化 Pen 類別的新執行個體。
多載
Pen(Brush) | |
Pen(Color) |
使用指定的色彩,初始化 Pen 類別的新執行個體。 |
Pen(Brush, Single) | |
Pen(Color, Single) |
Pen(Brush)
- 來源:
- Pen.cs
- 來源:
- Pen.cs
- 來源:
- Pen.cs
public:
Pen(System::Drawing::Brush ^ brush);
public Pen (System.Drawing.Brush brush);
new System.Drawing.Pen : System.Drawing.Brush -> System.Drawing.Pen
Public Sub New (brush As Brush)
參數
例外狀況
brush
為 null
。
範例
下列程式代碼範例示範使用 建構 Pen ,Brush以及在 上Pen設定 LineJoin 屬性的效果。
此範例的設計目的是要與 Windows Forms 搭配使用。 將程式代碼貼到表單中,並在處理表單的事件時呼叫 ShowLineJoin
方法,並e
傳遞為 PaintEventArgs。Paint
private:
void ShowLineJoin( PaintEventArgs^ e )
{
// Create a new pen.
Pen^ skyBluePen = gcnew Pen( Brushes::DeepSkyBlue );
// Set the pen's width.
skyBluePen->Width = 8.0F;
// Set the LineJoin property.
skyBluePen->LineJoin = System::Drawing::Drawing2D::LineJoin::Bevel;
// Draw a rectangle.
e->Graphics->DrawRectangle( skyBluePen, Rectangle(40,40,150,200) );
//Dispose of the pen.
delete skyBluePen;
}
private void ShowLineJoin(PaintEventArgs e)
{
// Create a new pen.
Pen skyBluePen = new Pen(Brushes.DeepSkyBlue);
// Set the pen's width.
skyBluePen.Width = 8.0F;
// Set the LineJoin property.
skyBluePen.LineJoin = System.Drawing.Drawing2D.LineJoin.Bevel;
// Draw a rectangle.
e.Graphics.DrawRectangle(skyBluePen,
new Rectangle(40, 40, 150, 200));
//Dispose of the pen.
skyBluePen.Dispose();
}
Private Sub ShowLineJoin(ByVal e As PaintEventArgs)
' Create a new pen.
Dim skyBluePen As New Pen(Brushes.DeepSkyBlue)
' Set the pen's width.
skyBluePen.Width = 8.0F
' Set the LineJoin property.
skyBluePen.LineJoin = Drawing2D.LineJoin.Bevel
' Draw a rectangle.
e.Graphics.DrawRectangle(skyBluePen, _
New Rectangle(40, 40, 150, 200))
'Dispose of the pen.
skyBluePen.Dispose()
End Sub
備註
屬性 Brush 會決定繪製線條的方式 Pen 。 線條的繪製方式就像是填滿矩形,且具有指定 Brush的特性。
適用於
Pen(Color)
- 來源:
- Pen.cs
- 來源:
- Pen.cs
- 來源:
- Pen.cs
使用指定的色彩,初始化 Pen 類別的新執行個體。
public:
Pen(System::Drawing::Color color);
public Pen (System.Drawing.Color color);
new System.Drawing.Pen : System.Drawing.Color -> System.Drawing.Pen
Public Sub New (color As Color)
參數
備註
屬性 Color 會設定為 參數所 color
指定的色彩。 屬性 Width 設定為 1, (預設) 。
適用於
Pen(Brush, Single)
- 來源:
- Pen.cs
- 來源:
- Pen.cs
- 來源:
- Pen.cs
public:
Pen(System::Drawing::Brush ^ brush, float width);
public Pen (System.Drawing.Brush brush, float width);
new System.Drawing.Pen : System.Drawing.Brush * single -> System.Drawing.Pen
Public Sub New (brush As Brush, width As Single)
參數
例外狀況
brush
為 null
。
範例
下列程式代碼範例會Pen建立 ,並示範在 上Pen設定 StartCap 和 EndCap 屬性的效果。
此範例的設計目的是要與 Windows Forms 搭配使用。 將程式代碼貼到表單中,並在處理表單的事件時呼叫 ShowStartAndEndCaps
方法,並e
傳遞為 PaintEventArgs。Paint
private:
void Button3_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
Graphics^ buttonGraphics = Button3->CreateGraphics();
Pen^ myPen = gcnew Pen( Color::ForestGreen,4.0F );
myPen->DashStyle = System::Drawing::Drawing2D::DashStyle::DashDotDot;
Rectangle theRectangle = Button3->ClientRectangle;
theRectangle.Inflate( -2, -2 );
buttonGraphics->DrawRectangle( myPen, theRectangle );
delete buttonGraphics;
delete myPen;
}
private void Button3_Click(System.Object sender, System.EventArgs e)
{
Graphics buttonGraphics = Button3.CreateGraphics();
Pen myPen = new Pen(Color.ForestGreen, 4.0F);
myPen.DashStyle = System.Drawing.Drawing2D.DashStyle.DashDotDot;
Rectangle theRectangle = Button3.ClientRectangle;
theRectangle.Inflate(-2, -2);
buttonGraphics.DrawRectangle(myPen, theRectangle);
buttonGraphics.Dispose();
myPen.Dispose();
}
Private Sub Button3_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button3.Click
Dim buttonGraphics As Graphics = Button3.CreateGraphics()
Dim myPen As Pen = New Pen(Color.ForestGreen, 4.0F)
myPen.DashStyle = Drawing2D.DashStyle.DashDotDot
Dim theRectangle As Rectangle = Button3.ClientRectangle
theRectangle.Inflate(-2, -2)
buttonGraphics.DrawRectangle(myPen, theRectangle)
buttonGraphics.Dispose()
myPen.Dispose()
End Sub
備註
Brush設定為 參數中指定的brush
色彩、Width屬性設定為 參數中指定的width
值,並將單位設定為 World。
請注意, brush
參數也會指定 Color 這個 Pen的屬性。
如果此值為 0,則裝置單位的寬度一律為 1 像素, 不會受到用於 之 Graphics 物件的 Pen 縮放轉換作業影響。
適用於
Pen(Color, Single)
- 來源:
- Pen.cs
- 來源:
- Pen.cs
- 來源:
- Pen.cs
public:
Pen(System::Drawing::Color color, float width);
public Pen (System.Drawing.Color color, float width);
new System.Drawing.Pen : System.Drawing.Color * single -> System.Drawing.Pen
Public Sub New (color As Color, width As Single)
參數
範例
下列程式代碼範例示範如何建立 Pen 和 設定 DashCap、 DashPattern和 SmoothingMode 屬性的效果。
此範例的設計目的是要與 Windows Forms 搭配使用。 將程式代碼貼到表單中,並在處理表單的事件時呼叫 ShowPensAndSmoothingMode
方法,並將 e 傳遞為 PaintEventArgs。Paint
private:
void ShowPensAndSmoothingMode( PaintEventArgs^ e )
{
// Set the SmoothingMode property to smooth the line.
e->Graphics->SmoothingMode = System::Drawing::Drawing2D::SmoothingMode::AntiAlias;
// Create a new Pen object.
Pen^ greenPen = gcnew Pen( Color::Green );
// Set the width to 6.
greenPen->Width = 6.0F;
// Set the DashCap to round.
greenPen->DashCap = System::Drawing::Drawing2D::DashCap::Round;
// Create a custom dash pattern.
array<Single>^temp0 = {4.0F,2.0F,1.0F,3.0F};
greenPen->DashPattern = temp0;
// Draw a line.
e->Graphics->DrawLine( greenPen, 20.0F, 20.0F, 100.0F, 240.0F );
// Change the SmoothingMode to none.
e->Graphics->SmoothingMode = System::Drawing::Drawing2D::SmoothingMode::None;
// Draw another line.
e->Graphics->DrawLine( greenPen, 100.0F, 240.0F, 160.0F, 20.0F );
// Dispose of the custom pen.
delete greenPen;
}
private void ShowPensAndSmoothingMode(PaintEventArgs e)
{
// Set the SmoothingMode property to smooth the line.
e.Graphics.SmoothingMode =
System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
// Create a new Pen object.
Pen greenPen = new Pen(Color.Green);
// Set the width to 6.
greenPen.Width = 6.0F;
// Set the DashCap to round.
greenPen.DashCap = System.Drawing.Drawing2D.DashCap.Round;
// Create a custom dash pattern.
greenPen.DashPattern = new float[]{4.0F, 2.0F, 1.0F, 3.0F};
// Draw a line.
e.Graphics.DrawLine(greenPen, 20.0F, 20.0F, 100.0F, 240.0F);
// Change the SmoothingMode to none.
e.Graphics.SmoothingMode =
System.Drawing.Drawing2D.SmoothingMode.None;
// Draw another line.
e.Graphics.DrawLine(greenPen, 100.0F, 240.0F, 160.0F, 20.0F);
// Dispose of the custom pen.
greenPen.Dispose();
}
Private Sub ShowPensAndSmoothingMode(ByVal e As PaintEventArgs)
' Set the SmoothingMode property to smooth the line.
e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.AntiAlias
' Create a new Pen object.
Dim greenPen As New Pen(Color.Green)
' Set the width to 6.
greenPen.Width = 6.0F
' Set the DashCap to round.
greenPen.DashCap = Drawing2D.DashCap.Round
' Create a custom dash pattern.
greenPen.DashPattern = New Single() {4.0F, 2.0F, 1.0F, 3.0F}
' Draw a line.
e.Graphics.DrawLine(greenPen, 20.0F, 20.0F, 100.0F, 240.0F)
' Change the SmoothingMode to none.
e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.None
' Draw another line.
e.Graphics.DrawLine(greenPen, 100.0F, 240.0F, 160.0F, 20.0F)
' Dispose of the custom pen.
greenPen.Dispose()
End Sub
備註
屬性 Color 會設定為 參數所 color
指定的色彩。 屬性 Width 會設定為 參數中指定的 width
值。 如果此值為 0,則裝置單位的寬度一律為 1 像素, 不會受到用於 之 Graphics 物件的 Pen 縮放轉換作業影響。