Question

选项Strict会抛出 Late Binding 的错误，我总是将对象转换为正确的类型，但在这个特定的情况下，我不知道如何投射这个物体。

警告发生在指令Shell.ToggleDesktop()

中

以下是代码：

''' <summary>
''' "Shell" CLASSID.
''' MSDN Documentation: http://msdn.microsoft.com/en-us/library/windows/desktop/bb776890%28v=vs.85%29.aspx
''' </summary>
Private Shared ReadOnly CLSIDShell As New Guid("13709620-C279-11CE-A49E-444553540000")

''' <summary>
''' Gets the objects in the Shell.
''' Methods are provided to control the Shell and to execute commands within the Shell.
''' There are also methods to obtain other Shell-related objects.
''' MSDN Documentation: http://msdn.microsoft.com/en-us/library/windows/desktop/bb774094%28v=vs.85%29.aspx
''' </summary>
Private Shared ReadOnly Property Shell As Object
    Get
        If _Shell Is Nothing Then
            _Shell = Activator.CreateInstance(Type.GetTypeFromCLSID(CLSIDShell))
            Return _Shell
        Else
            Return _Shell
        End If
    End Get
End Property
Private Shared _Shell As Object = Nothing

''' <summary>
''' Shows or hides the desktop.
''' </summary>
Friend Shared Sub ToggleDesktop()

    Shell.ToggleDesktop()

End Sub

Answer 1

您收到此错误，因为Object类型未公开名为ToggleDesktop的方法。

您可以为此代码文件设置Option Strict Off，或者创建一个包装器并使用反射来调用该方法。

Option Strict Late Binding错误问题

1 个答案: