问题描述
我正在编写一个继承自ComboBox的控件，我想在该组合框的ContextMenu中添加一个
条目。我没有问题，如果我从头开始创建一个全新的ContextMenu，但我更愿意只需将我的MenuItem添加到现有的内置ContextMenu上（剪切，复制，
粘贴等）：
_RemoveMRUItemMenu = New MenuItem
_RemoveMRUItemMenu.Text ="& ;删除项目
_RemoveMRUItemMenu.Enabled = False
MyBase.ContextMenu.MenuItems.Add（_RemoveMRUItemMen u）
AddHandler _RemoveMRUItemMenu.Click，AddressOf
RemoveCurrentMRUItem
这不起作用; MyBase.ContextMenu返回Nothing，即使
*是*现有的ContextMenu（内置的）。
是编写代码的唯一方法手动执行通常的TextBox
上下文菜单命令？或者我可以写一个继承自
的ContextMenu类似TextBoxContextMenu的东西吗？
谢谢，
g 。
I''m writing a control inheriting from ComboBox, and I''d like to add an
entry to the ContextMenu for that combo box. I have no problem if I
create an entirely new ContextMenu from scratch, but I''d prefer just to
tack my MenuItem on to the existing, built-in ContextMenu (Cut, Copy,
Paste, etc.):
_RemoveMRUItemMenu = New MenuItem
_RemoveMRUItemMenu.Text = "&Remove Item"
_RemoveMRUItemMenu.Enabled = False
MyBase.ContextMenu.MenuItems.Add(_RemoveMRUItemMen u)
AddHandler _RemoveMRUItemMenu.Click, AddressOf
RemoveCurrentMRUItem
This doesn''t work; MyBase.ContextMenu returns Nothing, even though
there *is* an existing ContextMenu (the built-in one).
Is the only way to write code to manually perform the usual TextBox
context menu commands? Or can I write a ContextMenu inheriting from
something like "TextBoxContextMenu"?
Thanks,
g.
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