如何：为菜单中的特定命令设置焦点

下面的示例展示了如何为某个容器项中的特定子项设置焦点。

mFile (BarSubItem 类) 项的菜单被激活。为了执行此操作，调用了 BarCustomContainerItemLink.OpenMenu 方法。在该菜单被打开之后，我们使用 BarItemLink.Focus 方法把焦点设置到它的第一个子项上。

结果显示如下：

C#	复制代码
// The item and its link for which the menu should be opened BarSubItem containerItem = mFile; BarSubItemLink containerLink = containerItem.Links[0] as BarSubItemLink; // Open the menu for the link containerLink.OpenMenu(); // Focus the first link in the menu opened containerLink.VisibleLinks[0].Focus();

复制代码

// The item and its link for which the menu should be opened
BarSubItem containerItem = mFile;
BarSubItemLink containerLink = containerItem.Links[0] as BarSubItemLink;
// Open the menu for the link
containerLink.OpenMenu();
// Focus the first link in the menu opened
containerLink.VisibleLinks[0].Focus();

Visual Basic	复制代码
' The item and its link for which the menu should be opened Dim containerItem As BarSubItem = mFile Dim containerLink As BarSubItemLink = CType(containerItem.Links[0], BarSubItemLink) ' Open the menu for the link containerLink.OpenMenu() ' Focus the first link in the menu opened containerLink.VisibleLinks[0].Focus()

Visual Basic

复制代码

' The item and its link for which the menu should be opened
Dim containerItem As BarSubItem = mFile
Dim containerLink As BarSubItemLink = CType(containerItem.Links[0], BarSubItemLink)
' Open the menu for the link
containerLink.OpenMenu()
' Focus the first link in the menu opened
containerLink.VisibleLinks[0].Focus()