語言

Image.GetBounds(GraphicsUnit) 方法

定義

命名空間:
System.Drawing
組件:
System.Drawing.Common.dll
組件:
System.Drawing.dll
套件:
System.Drawing.Common v11.0.0-rc.1.26425.128
來源:
Image.cs
來源:
Image.cs
來源:
Image.cs
來源:
Image.cs
來源:
Image.cs
來源:
Image.cs
來源:
Image.cs
來源:
Image.cs
來源:
Image.cs

取得該影像在指定單位中的界限。

public:
 System::Drawing::RectangleF GetBounds(System::Drawing::GraphicsUnit % pageUnit);
public System.Drawing.RectangleF GetBounds(ref System.Drawing.GraphicsUnit pageUnit);
member this.GetBounds : GraphicsUnit -> System.Drawing.RectangleF
Public Function GetBounds (ByRef pageUnit As GraphicsUnit) As RectangleF

參數

pageUnit
GraphicsUnit

GraphicsUnit其中一個表示界長方形度量單位的值。

傳回

RectangleF

該 RectangleF 代表影像在指定單位中的界限。

範例

以下程式碼範例示範如何利用Icon枚舉從handle載入位圖GraphicsUnit，以及如何使用Round該方法繪製點陣的矩形邊界。

此範例設計用於 Windows 表單。 建立一個包含名為 Button2的按鈕的表單。 將程式碼貼到表單中，並將此方法與按鈕 Click 事件關聯。

void Button2_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
   Bitmap^ bitmap1 = Bitmap::FromHicon( SystemIcons::Hand->Handle );
   Graphics^ formGraphics = this->CreateGraphics();
   GraphicsUnit units = GraphicsUnit::Point;
   RectangleF bmpRectangleF = bitmap1->GetBounds( units );
   Rectangle bmpRectangle = Rectangle::Round( bmpRectangleF );
   formGraphics->DrawRectangle( Pens::Blue, bmpRectangle );
   delete formGraphics;
}

private void Button2_Click(System.Object sender, System.EventArgs e)
{

    Bitmap bitmap1 = Bitmap.FromHicon(SystemIcons.Hand.Handle);
    Graphics formGraphics = this.CreateGraphics();
    GraphicsUnit units = GraphicsUnit.Point;

    RectangleF bmpRectangleF = bitmap1.GetBounds(ref units);
    Rectangle bmpRectangle = Rectangle.Round(bmpRectangleF);
    formGraphics.DrawRectangle(Pens.Blue, bmpRectangle);
    formGraphics.Dispose();
}

Private Sub Button2_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button2.Click

    Dim bitmap1 As Bitmap = Bitmap.FromHicon(SystemIcons.Hand.Handle)
    Dim formGraphics As Graphics = Me.CreateGraphics()
    Dim units As GraphicsUnit = GraphicsUnit.Point
    Dim bmpRectangleF As RectangleF = bitmap1.GetBounds(units)
    Dim bmpRectangle As Rectangle = Rectangle.Round(bmpRectangleF)
    formGraphics.DrawRectangle(Pens.Blue, bmpRectangle)
    formGraphics.Dispose()
End Sub

適用於