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Shape.Region 屬性

取得或設定與線條或圖形控制項關聯的視窗區域。

命名空間:  Microsoft.VisualBasic.PowerPacks
組件:  Microsoft.VisualBasic.PowerPacks.Vs (在 Microsoft.VisualBasic.PowerPacks.Vs.dll 中)

語法

'宣告
<BrowsableAttribute(False)> _
Public Property Region As Region
[BrowsableAttribute(false)]
public Region Region { get; set; }
[BrowsableAttribute(false)]
public:
property Region^ Region {
    Region^ get ();
    void set (Region^ value);
}
[<BrowsableAttribute(false)>]
member Region : Region with get, set
function get Region () : Region 
function set Region (value : Region)

屬性值

類型:Region
與控制項關聯的視窗 Region

備註

視窗區域是集合,其中作業系統會啟用繪圖視窗中的像素。 作業系統不會顯示視窗的視窗區域以外的任何的部分。 控制項的座標是區域的相對於控制項,而不控制項的用戶端區域的左上角。

範例

下列範例示範如何使用Region屬性來變更RectangleShape到半透明橢圓形。 此範例中您需要RectangleShape名 RectangleShape1 為表單上。 若要查看半透明效果,指派影像來BackgroundImage表單的屬性。

Private Sub RectangleShape1_Paint(
    ByVal sender As Object, 
    ByVal e As System.Windows.Forms.PaintEventArgs
  ) Handles RectangleShape1.Paint

    Dim shapePath As New System.Drawing.Drawing2D.GraphicsPath

    ' Set a new rectangle to the same size as the RectangleShape's  
    ' ClientRectangle property. 
    Dim newRectangle As Rectangle = RectangleShape1.ClientRectangle

    ' Decrease the size of the rectangle.
    newRectangle.Inflate(-10, -10)

    ' Draw the new rectangle's border.
    e.Graphics.DrawEllipse(System.Drawing.Pens.Black, newRectangle)

    ' Create a semi-transparent brush. 
    Dim br As New SolidBrush(Color.FromArgb(128, 0, 0, 255))

    ' Fill the new rectangle.
    e.Graphics.FillEllipse(br, newRectangle)
    'Increase the size of the rectangle to include the border.
    newRectangle.Inflate(1, 1)

    ' Create an oval region within the new rectangle.
    shapePath.AddEllipse(newRectangle)
    e.Graphics.DrawPath(Pens.Black, shapePath)

    ' Set the RectangleShape's Region property to the newly created  
    ' oval region.
    RectangleShape1.Region = New System.Drawing.Region(shapePath)
End Sub
private void rectangleShape1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{

    System.Drawing.Drawing2D.GraphicsPath shapePath = new System.Drawing.Drawing2D.GraphicsPath();

    // Set a new rectangle to the same size as the RectangleShape's  
    // ClientRectangle property.
    Rectangle newRectangle = rectangleShape1.ClientRectangle;

    // Decrease the size of the rectangle.
    newRectangle.Inflate(-10, -10);

    // Draw the new rectangle's border.
    e.Graphics.DrawEllipse(System.Drawing.Pens.Black, newRectangle);

    // Create a semi-transparent brush.
    SolidBrush br = new SolidBrush(Color.FromArgb(128, 0, 0, 255));

    // Fill the new rectangle.
    e.Graphics.FillEllipse(br, newRectangle);
    //Increase the size of the rectangle to include the border.
    newRectangle.Inflate(1, 1);

    // Create an oval region within the new rectangle.
    shapePath.AddEllipse(newRectangle);
    e.Graphics.DrawPath(Pens.Black, shapePath);

    // Set the RectangleShape's Region property to the newly created  
    // oval region.
    rectangleShape1.Region = new System.Drawing.Region(shapePath);
}

.NET Framework 安全性

請參閱

參考

Shape 類別

Microsoft.VisualBasic.PowerPacks 命名空間

其他資源

如何:使用 LineShape 控制項繪製線條 (Visual Studio)

如何:使用 OvalShape 和 RectangleShape 控制項繪製圖案 (Visual Studio)

Line 和 Shape 控制項簡介 (Visual Studio)