How to control the LEAD Video Text Overlay Filter properties programmatically

The attached Visual Studio 2017 project is an updated project from this earlier post. The project now uses LEADTOOLS 19. This project usses the LEADTOOLS CaptureCtrl along with the text overlay filter to time stamp captured video. There is also an option in the demo to set custom text with the text overlay filter. The idea was to show how to programmatically control the filter.

This project differs slightly from the original. I have made the following changes:

• The text overlay filter is now added by default. By doing this, it made it possible to enable/disable the filter without modifying the underlying graph. In other words, I removed the flicker that occurred when showing/hiding text.
  
• Added an event handler to clean up when the form closed
  
• Freed the video device when the application closes
  
• Releases the text overlay (COM object) when the application closes

To run the project, please extract it into the following directory:
C:\LEADTOOLS 19\Examples\posts\t12299

Edited by moderator Tuesday, October 22, 2019 3:35:54 PM(UTC)  | Reason: Not specified

I have updated this project to work with version 20. You should be able to run this from any folder, however it references the version 20 DLLs from the default "C:\LEADTOOLS 20" installation folder.