Unable to cast object
Printed From: Way2call Communications
Category: Hi-Phone Software Development Kit (SDK)
Forum Name: Hi-Phone and .NET
Forum Description: Discussion on the Hi-Phone product family, its .NET interface, samples and development tools
URL: http://www.way2call.com/forum/forum_posts.asp?TID=68
Printed Date: Apr 26 2024 at 5:20pm
Topic: Unable to cast object
Posted By: mattj
Subject: Unable to cast object
Date Posted: Apr 21 2010 at 11:10am
I'm trying to create a set of generic classes from the SDK .net example. Everything compiles fine but I get the error:
"Unable to cast object of type 'XXX.cls_way2call' to type 'System.ComponentModel.ISynchronizeInvoke'."
It chokes up at:
cls_call.Driver.Device(INT_PROP_DEVICE).Open(0)
I'm not sure exactly what's going on here. Any help would be much appreciated. I've attached a link to the classes below.
http://mattjan.us/cls_call.zip - http://mattjan.us/cls_call.zip
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Replies:
Posted By: mattj
Date Posted: Apr 21 2010 at 11:12am
Sorry, it choes up at
Driver.Device(INT_PROP_DEVICE).Open(0)
in cls_call.CallNumber.
(editing/deleting posts would be a useful feature)
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Posted By: mattj
Date Posted: Apr 21 2010 at 2:54pm
I got my class working by adding
Implements System.ComponentModel.ISynchronizeInvoke
Do i need to add anything to the following functions?:
Public Function BeginInvoke(ByVal method As System.Delegate, ByVal args() As Object) As System.IAsyncResult Implements System.ComponentModel.ISynchronizeInvoke.BeginInvoke
End Function
Public Function EndInvoke(ByVal result As System.IAsyncResult) As Object Implements System.ComponentModel.ISynchronizeInvoke.EndInvoke
End Function
Public Function Invoke(ByVal method As System.Delegate, ByVal args() As Object) As Object Implements System.ComponentModel.ISynchronizeInvoke.Invoke
End Function
Public ReadOnly Property InvokeRequired() As Boolean Implements System.ComponentModel.ISynchronizeInvoke.InvokeRequired
Get
End Get
End Property
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