如何在usercontrol中使面板在设计时可滚动

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您好， 我将一个面板放在一个usercontrol中，将其autoscroll设置为true并构建用户控件。 当我在设计时将控件放在面板内时，如果滚动条的内容较大，它会自动显示滚动条，但是我无法滚动它，因为滚动条在设计时没有响应鼠标事件，除了运行时 我该如何解决这个问题？ 谢谢 我尝试了什么： 我创建了一个设计器并覆盖了它的GetHitTest函数，但它还没有工作

Hello, I place a panel inside a usercontrol, set its autoscroll to true and built the usercontrol. When i place controls inside the panel at design time, it automatically shows the scrollbar if its content is larger, but i cannot scroll it, as the scrollbar doesn't respond to mouse events at design time except runtime How can i fix this? Thanks What I have tried: I created a designer and Override its GetHitTest function, but its not still working

Protected Overrides Function GetHitTest(ByVal point As System.Drawing.Point) As Boolean point = Control.PointToClient(point) Dim rect As Rectangle = Me.Host.Bounds Return rect.Contains(point) End Function

推荐答案

这是一个显示它如何的例子必须完成： < Here is an example which shows how it must be done : < Private HostControl As RMBaseSlider = Nothing Public Overrides Sub Initialize(ByVal component As System.ComponentModel.IComponent) MyBase.Initialize(component) HostControl = DirectCast(component, RMBaseSlider) End Sub Protected Overrides Function GetHitTest(point As System.Drawing.Point) As Boolean If HostControl IsNot Nothing Then Dim myPoint As Point If HostControl.ShowStepButtons Then myPoint = HostControl.ButtonLeft.PointToClient(point) If HostControl.ButtonLeft.ClientRectangle.Contains(myPoint) Then Return True myPoint = HostControl.ButtonRight.PointToClient(point) If HostControl.ButtonRight.ClientRectangle.Contains(myPoint) Then Return True End If myPoint = HostControl.Slider.PointToClient(point) If HostControl.Slider.ClientRectangle.Contains(myPoint) Then Return True End If Return MyBase.GetHitTest(point) End Function

这是我的一个控制设计师的代码片段。 这里我有一个包含2个按钮的滑块。 如果鼠标位于其中一个按钮上，则GetHitTest会向Designer提供TRUE ... 我认为可以帮助你......

This is a code-snippet out of one of my Control-Designers. Here I have a Slider which contains 2 Buttons. The GetHitTest delivers a TRUE to the Designer if the Mouse is located over one of these Buttons ... I think that could help you ...