ControlPaint.DrawFocusRectangle 方法

參考

定義

命名空間:: System.Windows.Forms

組件:: System.Windows.Forms.dll

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。

繪製焦點矩形 (Focus Rectangle)。

多載

DrawFocusRectangle(Graphics, Rectangle, Color, Color)	在指定的圖形表層和指定的範圍內，繪製焦點矩形。
DrawFocusRectangle(Graphics, Rectangle)	在指定的圖形表層和指定的範圍內，繪製焦點矩形。

DrawFocusRectangle(Graphics, Rectangle, Color, Color)

在指定的圖形表層和指定的範圍內，繪製焦點矩形。

public:
 static void DrawFocusRectangle(System::Drawing::Graphics ^ graphics, System::Drawing::Rectangle rectangle, System::Drawing::Color foreColor, System::Drawing::Color backColor);

public static void DrawFocusRectangle (System.Drawing.Graphics graphics, System.Drawing.Rectangle rectangle, System.Drawing.Color foreColor, System.Drawing.Color backColor);

static member DrawFocusRectangle : System.Drawing.Graphics * System.Drawing.Rectangle * System.Drawing.Color * System.Drawing.Color -> unit

Public Shared Sub DrawFocusRectangle (graphics As Graphics, rectangle As Rectangle, foreColor As Color, backColor As Color)

參數

graphics: Graphics

要在上面繪製的 Graphics。

rectangle: Rectangle

Rectangle，表示抓取控點圖像的大小。

foreColor: Color

Color，要繪製焦點矩形之物件的背景色彩。

backColor: Color

Color，要繪製焦點矩形之物件的背景色彩。

範例

下列程式碼範例示範如何使用 DrawFocusRectangle 方法和 Control.Handle 屬性。若要執行此範例，請將下列程式碼貼到表單中。將名為和 Button2 的兩個 Button1 按鈕新增至表單，並確定所有事件都已連線到其事件處理常式。

// This method draws a focus rectangle on Button2 using the 
// handle and client rectangle of Button2.
void Button1_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
   ControlPaint::DrawFocusRectangle( Graphics::FromHwnd( Button2->Handle ), Button2->ClientRectangle );
}

// This method draws a focus rectangle on Button2 using the 
// handle and client rectangle of Button2.
private void Button1_Click(System.Object sender, System.EventArgs e)
{
    ControlPaint.DrawFocusRectangle(Graphics.FromHwnd(Button2.Handle), 
        Button2.ClientRectangle);
}

' This method draws a focus rectangle on Button2 using the 
' handle and client rectangle of Button2.
Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click
    ControlPaint.DrawFocusRectangle(Graphics.FromHwnd(Button2.Handle), _
    Button2.ClientRectangle)
End Sub

備註

焦點矩形是一個虛線矩形，Windows 用來指出哪些控制項具有目前的鍵盤焦點。

適用於

DrawFocusRectangle(Graphics, Rectangle)