自定义DropDown列表中的用户控件 [英] User Controls in Custom DropDown list

问题描述

大家好，

让我们直接进入它。



我有一个用户控件加载了来自数据的信息基础。叫它 ListItem -

类型是userControl



ListItem 被加载到停靠在父窗口中的流布局面板 - 父窗口称为 PopUpBox - 类型为system.winows.form - 无边框



现在我有另一个需要像组合框一样的控件其中 PopUpBox 是选择菜单

显示 - 调用此控件 Custom_Combo





问题是，为了使 popupBox 直接出现，我需要做些什么按下折叠按钮时

Custom_Combo 。更具体地说，我在确定显示 PopUpBox 的位置时遇到问题。我似乎无法直接在 Custom_Combo 下加载它。





有什么想法？



这是我的第一篇帖子，所以我为发布的任何错误道歉。提前感谢您的帮助。

Hi all,
Lets jump right into it.

I have a user control s that is loaded with information from a data base. call it ListItem --
type is userControl

ListItem is loaded into a flow layout panel that is docked into a parent window - parent window is called PopUpBox -- type is system.winows.form - no borders

Now I have another control that needs to act like a combobox Where PopUpBox is the selection menu
that is displayed -- Call this control Custom_Combo


The question is, what do I need to do in order to make popupBox appear directly under the
Custom_Combo when when the collapse button is pressed. More specifically, I am having trouble with determining the location at which to display my PopUpBox. I can't seem to get load it directly under the Custom_Combo.


Any thoughts?

This is my first post so I apologize for any mistakes I've made in posting. Thank you in advance for any help.

推荐答案

这很简单..

Well that was easy..

Public Class IP_ServiceDisplay ' Custom Combo

    Property x As New IPLine_Panels.Task_PopupPanel ' Popupbox



    Private Sub IP_ServiceDisplay_Load(sender As Object, e As EventArgs) Handles MyBase.Load

    End Sub

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim screenpos As Drawing.Point = Me.PointToScreen(New Drawing.Point(0, 0))

        x.Location = screenpos

        x.Show() 'the popup box will adjust it's size and location, based on it's parents height width and and the number of controls it contains






    End Sub
End Class

和弹出框包含Lost_Focus事件处理程序中的Me.Hide

And popup box contains Me.Hide in the Lost_Focus event Handler

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