DrawingContext.DrawText 方法

DrawingContext.DrawText 方法

Visual Studio 2010

其他版本

在指定位置绘制格式化文本。

命名空间：  System.Windows.Media
程序集：  PresentationCore（在 PresentationCore.dll 中）

语法

C#

C++

F#

VB

public void DrawText(
	FormattedText formattedText,
	Point origin
)

参数

formattedText

类型：System.Windows.Media.FormattedText
要绘制的格式化文本。

origin

类型：System.Windows.Point
要绘制文本的位置。

异常

异常	条件
ObjectDisposedException	该对象已被关闭或释放。

示例

The following example shows how to draw text to a DrawingVisual using a DrawingContext object. A drawing context is returned by calling the RenderOpen method of a DrawingVisual object. You can draw graphics and text into a drawing context.

To draw text into the drawing context, use the DrawText method of a DrawingContext object. When you are finished drawing content into the drawing context, call the Close method to close the drawing context and persist the content.

C#

VB

// Create a DrawingVisual that contains text.
private DrawingVisual CreateDrawingVisualText()
{
    // Create an instance of a DrawingVisual.
    DrawingVisual drawingVisual = new DrawingVisual();

    // Retrieve the DrawingContext from the DrawingVisual.
    DrawingContext drawingContext = drawingVisual.RenderOpen();

    // Draw a formatted text string into the DrawingContext.
    drawingContext.DrawText(
       new FormattedText("Click Me!",
          CultureInfo.GetCultureInfo("en-us"),
          FlowDirection.LeftToRight,
          new Typeface("Verdana"),
          36, System.Windows.Media.Brushes.Black),
          new System.Windows.Point(200, 116));

    // Close the DrawingContext to persist changes to the DrawingVisual.
    drawingContext.Close();

    return drawingVisual;
}