FlowDocumentReader.Zoom 屬性

定義

命名空間:

System.Windows.Controls

組件:

PresentationFramework.dll

設定或設定當前的縮放等級。

public:
 property double Zoom { double get(); void set(double value); };

public double Zoom { get; set; }

member this.Zoom : double with get, set

Public Property Zoom As Double

屬性值

Double

目前的縮放等級，以百分比來解讀。 預設值為 100.0（縮放等級為 100%）。

範例

以下範例說明如何設定屬性 Zoom 。

<FlowDocumentReader
  IsFindEnabled="True"  
  IsPrintEnabled="True"
  MinZoom="50" MaxZoom="1000"
  Zoom="120" ZoomIncrement="5"
>
  <FlowDocument>
    <Paragraph>
      Flow content...
    </Paragraph>
  </FlowDocument>
</FlowDocumentReader>

下列示範如何以程式設計的方式設定 Typography 屬性。

FlowDocumentReader flowDocRdr = new FlowDocumentReader();

// Enable find...
flowDocRdr.IsFindEnabled = true;
// Enable printing...
flowDocRdr.IsPrintEnabled = true;
// Set zoom between 50% and 1000%.
flowDocRdr.MinZoom = 50;
flowDocRdr.MaxZoom = 1000;
// Set the zoom increment to 5%.
flowDocRdr.ZoomIncrement = 5;
// Set the initial zoom to 120%.
flowDocRdr.Zoom = 120;

FlowDocument flowDoc = new FlowDocument(new Paragraph(new Run("Flow content...")));
flowDocRdr.Document = flowDoc;

Dim flowDocRdr As New FlowDocumentReader()

' Enable find...
flowDocRdr.IsFindEnabled = True
' Enable printing...
flowDocRdr.IsPrintEnabled = True
' Set zoom between 50% and 1000%.
flowDocRdr.MinZoom = 50
flowDocRdr.MaxZoom = 1000
' Set the zoom increment to 5%.
flowDocRdr.ZoomIncrement = 5
' Set the initial zoom to 120%.
flowDocRdr.Zoom = 120

Dim flowDoc As New FlowDocument(New Paragraph(New Run("Flow content...")))
flowDocRdr.Document = flowDoc

備註

預設 FlowDocumentReader 使用者介面（UI）包含縮放控制，提供可調整縮放的按鈕，以及調整縮放等級的滑桿。 下圖展示了預設介面下的 FlowDocumentReader 縮放控制。

縮放等級受 和 MaxZoom 屬性的數值MinZoom限制。

相依財產資訊

項目	價值
識別碼欄位	ZoomProperty
元資料屬性設為 true	沒有

另請參閱

• CanDecreaseZoom
• CanIncreaseZoom
• DecreaseZoom()
• IncreaseZoom()