Control.Handle 属性

定义

获取控件绑定到的窗口句柄。Gets the window handle that the control is bound to.

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

属性值

IntPtr,包含控件的窗口句柄 (HWND)。An IntPtr that contains the window handle (HWND) of the control.

实现

属性

示例

下面的代码示例演示如何使用 ControlPaint.DrawFocusRectangleHandle 属性。The following code example demonstrates using the ControlPaint.DrawFocusRectangle and the Handle property. 若要运行该示例,请将以下代码粘贴到窗体中。To run the example paste the following code in a form. 向窗体添加两个名为 Button1Button2 的按钮,并确保所有事件都已连接到其事件处理程序。Add two buttons named Button1 and Button2 to the form and ensure all events are connected to their event handlers.

// 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

Handle 属性的值是一个 Windows HWNDThe value of the Handle property is a Windows HWND. 如果尚未创建句柄,则引用此属性将强制创建该句柄。If the handle has not yet been created, referencing this property will force the handle to be created.

适用于

另请参阅