DesignerGlyph.OnPaint 方法
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。
在衍生類別中覆寫時，請執行任何轉譯活動設計工具介面上圖像時所需的工作。
protected:
abstract void OnPaint(System::Drawing::Graphics ^ graphics, bool activated, System::Workflow::ComponentModel::Design::AmbientTheme ^ ambientTheme, System::Workflow::ComponentModel::Design::ActivityDesigner ^ designer);C#
protected abstract void OnPaint(System.Drawing.Graphics graphics, bool activated, System.Workflow.ComponentModel.Design.AmbientTheme ambientTheme, System.Workflow.ComponentModel.Design.ActivityDesigner designer);abstract member OnPaint : System.Drawing.Graphics * bool * System.Workflow.ComponentModel.Design.AmbientTheme * System.Workflow.ComponentModel.Design.ActivityDesigner -> unitProtected MustOverride Sub OnPaint (graphics As Graphics, activated As Boolean, ambientTheme As AmbientTheme, designer As ActivityDesigner)- activated
- Boolean
true，表示圖像顯示在設計介面上，否則為 false。
- ambientTheme
- AmbientTheme
用於存取環境屬性 (Ambient Property) 設定的 AmbientTheme。
- designer
- ActivityDesigner
要從中取得關於使用者動作之資訊的 ActivityDesigner。
下列程式碼範例示範如何覆寫 OnPaint 方法。 程式碼可自訂在與圖像關聯之活動設計工具上繪製圖像物件的方式。
這個程式碼範例是 DesignerGlyphProvider.cs 檔案中＜工作流程監視器 SDK＞範例的一部分。 如需詳細資訊，請參閱 工作流程監視器。
C#
protected override void OnPaint(Graphics graphics, bool activated, AmbientTheme ambientTheme, ActivityDesigner designer)
{
Bitmap bitmap = Resources.Executing;
bitmap.MakeTransparent(Color.FromArgb(0, 255, 255));
if (bitmap != null)
graphics.DrawImage(bitmap, GetBounds(designer, activated), new Rectangle(Point.Empty, bitmap.Size), GraphicsUnit.Pixel);
}
Protected Overrides Sub OnPaint(ByVal graphics As System.Drawing.Graphics, ByVal activated As Boolean, ByVal ambientTheme As System.Workflow.ComponentModel.Design.AmbientTheme, ByVal designer As System.Workflow.ComponentModel.Design.ActivityDesigner)
Dim bitmap As Bitmap = AppResources.Executing
bitmap.MakeTransparent(Color.FromArgb(0, 255, 255))
If Not bitmap Is Nothing Then
graphics.DrawImage(bitmap, GetBounds(designer, activated), New Rectangle(Point.Empty, bitmap.Size), GraphicsUnit.Pixel)
End If
End Sub
OnPaint 會使用 CommentIndicatorPen 繪製註解圖像界限和要填滿的 CommentIndicatorBrush。
| 產品 | 版本 |
|---|---|
| .NET Framework | 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
