本文整理汇总了VB.NET中System.Windows.Forms.ToolStripDropDown.Closing事件的典型用法代码示例。如果您正苦于以下问题：VB.NET ToolStripDropDown.Closing事件的具体用法？VB.NET ToolStripDropDown.Closing怎么用？VB.NET ToolStripDropDown.Closing使用的例子？那么恭喜您, 这里精选的事件代码示例或许可以为您提供帮助。您也可以进一步了解该事件所在类System.Windows.Forms.ToolStripDropDown的用法示例。
在下文中一共展示了ToolStripDropDown.Closing事件的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1:
' This method handles the Closing event. The ToolStripDropDown
' control is not allowed to close unless the Done menu item
' is clicked or the Close method is called explicitly.
' The Done menu item is enabled only after both of the other
' menu items have been selected.
Private Sub contextMenuStrip_Closing(sender As Object, e As ToolStripDropDownClosingEventArgs) Handles contextMenuStrip1.Closing
If e.CloseReason <> ToolStripDropDownCloseReason.CloseCalled Then
If subItem1ToolStripMenuItem.Checked AndAlso subItem2ToolStripMenuItem.Checked AndAlso doneToolStripMenuItem.Enabled Then
' Reset the state of menu items.
subItem1ToolStripMenuItem.Checked = False
subItem2ToolStripMenuItem.Checked = False
doneToolStripMenuItem.Enabled = False
' Allow the ToolStripDropDown to close.
' Don't cancel the Close operation.
e.Cancel = False
Else
' Cancel the Close operation to keep the menu open.
e.Cancel = True
Me.toolStripStatusLabel1.Text = "Close canceled"
End If
End If
End Sub