Version: 2.1.5.0
SSL authentication and encryption ensures your data stays private as it travels across the public network.
Q: I don’t know the first thing about SSL. Can you give me an overview that relates it to your product?
A: Basically, once a TCP connection is established, the server identifies itself with a special digital certificate that identifies it as “trusted" Optionally, the server may then require the client to identify itself with a digital certificate. If the respective certificates “pass muster" then all data is encrypted/decrypted using public key technology. PowerTCP makes all this as transparent as possible, while giving you the greatest control over accepting/rejecting certificates.
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Q: I exported a certificate from my UNIX operating system to use with your product in SSL mode, but it doesn't seem to work.
A: Our implementation requires that a certificate be properly imported into a valid Microsoft Certificate Store. If you are importing a certificate that was created from a non-MS source (such as OpenSSL), please be sure that you export the certificate properly before attempting to import it into an MS Cert store. Check the docs for whatever SSL system you are using for this info. Also, make sure that when you export your certificate, regardless of your SSL library, that it includes the private key. A certificate that is exported without a private key can not be used as a valid certificate when imported into the Microsoft Certificate Store.
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Q: I have a web page that embeds your ActiveX control that works on my development machine. On another machine, a red 'X' appears or the controls shows the Trial Message.
A: The problem is that a runtime license needs to be provided for the control. Resolution: Get LPK_TOOL.EXE from Microsoft. You can find it in their Cabinet Development kit. It is also on one of the CDs that comes with Visual Studio. Use the LPK_TOOL to create an .lpk file for YOUR control. We can't stress YOUR control enough. In other words, let's say that you have a control called MyControl that contains several Dart controls. When choosing the control in the LPK_TOOL listbox, choose MyControl, NOT the Dart Controls. Again, we can't stress this part enough as it is ALWAYS the part that is missed. Add the following to your document BEFORE any other objects are declared. Make sure LPKNAME.LPK is the name of YOUR lpk: <OBJECT CLASSID=clsid:5220cb21-c88d-11cf-b347-00aa00a28331> <PARAM NAME='LPKPath' VALUE='LPKNAME.LPK'>
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Q: I want to use your control in a non-VB environment (e.g. Sybase or Borland) AND create it dynamically. It works on my development machine, but elsewhere it throws a license error.
A: PowerTCP uses what is known as ClassFactory2 licensing. This is a system developed by Microsoft as part of the COM architecture. All of the major development environments that we use support this type of licensing when a control is placed on a form, however, only VB or VBA type environments support it when the control is 'created' without a form. By created, this means Dimming as New, not CreateObject. Of the other environments, we currently only provide direct support only for dynamic usage in Visual C++. See the component wrappers for the code needed to instantiate an object with a license. ( Example: ITcp.h and ITcp.cpp included with the sample projects ) If you absolutely HAVE to use our products in a project without a form, you will need to get direction from the company that makes the environment ( Example: Borland, Sybase ) on how to use COM objects that require ClassFactory2 licensing.  Support for these environments is currently unavailable through Dart.
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Q: I’m new to secure communications, and I’m not sure what I need. What should be my first step?
A: Dart has put all our Secure Socket Layer (SSL) related controls into the PowerTCP SSL Tool, so you are in the right place. Our knowledgeable pre-sales support staff will help point you towards the best solution for your project. Call us about your specific application, and we will help you determine the best approach to meet your design goals.
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Q: How do I deploy Excel spreadsheets that use PowerTCP ActiveX controls?
A: Unfortunately, there is no consistent model for 3rd party component support across Office products and versions. The recommended usage in Excel is to use the product as a reference rather than inserting it as a control. Also, if the spreadsheet ever had a PowerTCP control inserted at any previous time, that data was cached by Excel and a new spreadsheet will be required. When deploying to users, please refer to "Distribution under Internet Information Server" in the documentation for instructions as the technique is the same.
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Q: In Powerbuilder, the hourglass cursor does not persist when the Dart control is busy. How can I keep the hourglass?
A: Unlike other environments, the interface is automatically disabled when the cursor changes to an hourglass in Powerbuilder.

Including the code below will allow the hourglass to persist, but it will not automatically disable the interface. To produce the usual hourglass behavior, the interface must be explicitely disabled and enabled by the user.

//In the external global function declarations
FUNCTION ulong SetCapture(ulong a) LIBRARY "user32.dll"
FUNCTION boolean ReleaseCapture()
LIBRARY "user32.dll"

//In the script
ulong ll_handle, ll_rc
ll_handle = Handle(this)
ll_rc = SetCapture(ll_handle)
SetPointer(hourglass!)

//after done
ReleaseCapture()

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Q: Is the free trial a 'full version'?
A: Yes. Your trial download is identical to the purchased product. The only difference is the trial download will only work for 30 days (in the case of ActiveX products) or will work for 7 days between each rebuild (for .NET products).
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Q: Is there any way to use certificates from LocalMachine in ASP.NET?
A: The solution is to login into the machine as the AspNet user (after setting the password for the account as an admin). You can then use MMC to import a certificate into the AspNet CurrentUser/My account, and this certificate will be accessible in ASP.NET applications.
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Q: Is this product interoperable with the .NET framework?
A:

Although the product may work with the .NET framework, it is not recommended no supported by our technical staff. PowerTCP for ActiveX products were not made to be used with the .NET framework and some features or versions of the framework may be incompatible. We do offer a line of PowerTCP for .NET products that are updated for continued compatibility within .NET.


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Q: Why am I getting a Type Mismatch error in VBScript?
A: When using our controls in VBScript, you must specify optional parameters to prevent Type Mismatch errors.
For example, to zip a file with the FileStore, you need to create a SpanSettings instance:

Dim span
Set span = CreateObject("Dart.SpanSettings.1")
...
Zip1.FileStore.Zip("c:\Test\test.zip", span)

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Q: Can I use the ActiveX controls in a scripting language such as VBScript?
A:

Yes, in most environments the ActiveX controls can be used in a scripting engine such as VBScript.

However, while the controls will work on 64 bit machines in compiled environments such as VB6 and VC++, they are limited to 32 bit Operating Systems in scripting environments.


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Q: Why do I see an 'Error accessing the registry' message in VB6?
A: This error will occur on Windows Vista and Windows 7 machines when User Account Control (UAC) is on and VB6 tries to write to an inaccessible part of the registry.

You will see this error message when an ActiveX control is used for the first time. This may be when a project using the control is opened, or when the control is selected to add to the Toolbox.

After the initial failure, VB6 will select an alternate registry location to write to, and subsequent uses of the control will not produce the error.


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