ControlPaint.DrawFocusRectangle 方法

参考

定义

命名空间:: System.Windows.Forms

程序集:: System.Windows.Forms.dll

重要

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绘制聚焦框。

重载

DrawFocusRectangle(Graphics, Rectangle, Color, Color)	在指定边界内、指定的图形表面上绘制聚焦框。
DrawFocusRectangle(Graphics, Rectangle)	在指定边界内、指定的图形表面上绘制聚焦框。

DrawFocusRectangle(Graphics, Rectangle, Color, Color)

在指定边界内、指定的图形表面上绘制聚焦框。

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)

参数

graphics: Graphics

要进行绘制的 Graphics。

rectangle: Rectangle

代表抓取柄标志符号尺寸的 Rectangle。

foreColor: Color

Color 是在其上绘制聚焦框的对象的前景色。

backColor: Color

Color 是在其上绘制聚焦框的对象的背景色。

示例

下面的代码示例演示如何使用 DrawFocusRectangle 方法和 Control.Handle 属性。若要运行此示例，请将以下代码粘贴到窗体中。将两个命名 Button1 按钮和 Button2 添加到窗体，并确保所有事件都连接到其事件处理程序。

// 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

注解

焦点矩形是一个虚线矩形，Windows用于指示具有当前键盘焦点的控件。

适用于

DrawFocusRectangle(Graphics, Rectangle)