In the last few weeks, I explained features of several VCL components using a hands-on example that extracts forecast information for a location in the United States from the National Weather Service API.
Apart from the videos, the full source code is no available for free on GitHub: https://github.com/holgerflick/NationalWeatherServiceExample
I also produced an introductory video for the demo and the video series that is still to be published by TMS early next week.
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Tags: Demo, English, Free, Mapping, REST, TAdvChart, TAdvChartLink, TAdvGMaps, TAdvMemo, TRESTClient, TRESTRequest, TRESTResponse, VCL
Quite some time ago, I blogged about how to encode and decode data as Base64. The post is still accessed on a regular basis. However, I have received a question multiple times and want to provide the solution: How can images be encoded and decoded?
The key lies in the polymorphism of TPicture that allows you to implement a solution that is not even depending on one file format.
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Tags: Base64, BMP, English, JPEG, JPG, PNG, System.NetEncoding, TAdvMemo, TImage, TMemoryStream, TPicture, TStream, VCL