I am currently exploring the creation of a custom ActiveX control for PVP7 applications to export data in XML format. In my initial experiments, I managed to open a specific file and write predetermined text and tag details from the HMI. However, I encountered difficulties with inputting and managing dynamic string data, like using a filename provided in FTV Studio. I would appreciate any guidance or insights from individuals with relevant experience in this matter. Thank you.
Although this information may be outdated, it could provide valuable insight into troubleshooting code issues. It's important to remember that an ActiveX control that functions properly on your computer may not necessarily work on a PanelView. In the past, developers had to compile two separate versions of their application - one for their development PC and another for the PanelView device. Additionally, remember to register the ActiveX control on the PanelView before deploying your application.
Have you considered using the scripting capabilities of FTV Studio to handle the dynamic inputs? You can use these to dynamically create the filename you'd like and pass it to your ActiveX control. Another point you might explore is buffering the data you want to export as a string variable in the control. You could then only write to XML once the sequence is completed, offering a more efficient process management.
I've also dabbled a bit in creating ActiveX controls for PVP7 and faced similar issues initially. It sounds like you're having trouble with the dynamic data management aspect. It's slightly tricky, as the specifications for dynamic data like strings can be different. I found it useful to really pay attention to my variable assignments and especially type casting, since managing to align the HMI with the XML is crucial. In addition, using FileSystemObject may make file handling easier for your situation. Remember, you'll have to make sure that the scripting language you're using fully supports the methods provided by FileSystemObject. Good luck with your project!
Based on my experience, I'd recommend using the FileSystemObject to handle dynamic string data and file naming. This object, which comes with the Microsoft Scripting Library, allows you to create, read, update, and delete the system files. You'll need to configure your FTV Studio to pass your filename as a string argument to your ActiveX control. Once you've done this, you can use the FileSystemObject to open your file and manage your data. Just make sure you have proper access and permissions to work with the files in your chosen directory.
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Answer: - To handle dynamic string data like filenames from FTV Studio, you can utilize parameters in your ActiveX control that can be updated dynamically. This way, you can pass the necessary data, such as filenames, from the HMI to the ActiveX control for processing and exporting in XML format.
Answer: - It is recommended to design your ActiveX control with flexibility in mind, allowing for dynamic data inputs and updates. Consider using properties or methods that can receive and process different types of data, ensuring that your control can adapt to varying requirements and scenarios.
Answer: - You can explore online tutorials, forums, or documentation related to ActiveX control development and XML data manipulation. Additionally, examining sample projects or seeking guidance from experienced developers in the field can provide valuable insights and assistance in your custom control creation process.
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