Control.Handle 属性

  • 参考

定义

命名空间:
System.Windows.Forms
程序集:
System.Windows.Forms.dll

获取控件绑定到的窗口句柄。

public:
 property IntPtr Handle { IntPtr get(); };
[System.ComponentModel.Browsable(false)]
public IntPtr Handle { get; }
[<System.ComponentModel.Browsable(false)>]
member this.Handle : nativeint
Public ReadOnly Property Handle As IntPtr

属性值

IntPtr

nativeint

IntPtr，包含控件的窗口句柄 (HWND)。

实现

Handle
属性
BrowsableAttribute

示例

下面的代码示例演示了如何使用 ControlPaint.DrawFocusRectangle 和 Handle 属性。 若要运行示例，请将以下代码粘贴到窗体中。 添加两个命名Button1``Button2按钮和窗体，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

属性的值 Handle 是 Windows HWND。 如果尚未创建句柄，则引用此属性将强制创建句柄。

适用于

另请参阅