There is a great number of instant messaging applications on the market today. One of the fastest-growing and increasingly popular apps is the Telegram app. Telegram is a freeware, cross-platform, cloud-based instant messaging application that provides end-to-end encrypted voice and video calls, chats, and several other features. It also comes with various developer tools that you can work with an ide software like Delphi. In this video from the recently conclude DelphiCon 2021, Alexander Syrykh will share with us everything about Telegram, how to work with the Telegram bot, and how to generate invoices using FastReport VCL and Delphi.

Do you want to know everything there is to know about Telegram?

With the increasing number of Messaging apps today including Facebook Messenger and WhatsApp, Alexander will share us the reasons why you should use Telegram. Aside from providing a stable messenger operation, Telegram has a fast-growing audience of monthly active users with an increase of 10% over the last 6 months. Also, it has a fast bot creation. Generally, bots are third-party applications that run inside the Telegram app. Here, users can interact with the bot by sending them messages, comments, and inline requests.

Interestingly, Telegram allows users to create their own Bots. To do so, you need to write a message to the so-called Botfather which allows you to create new bot accounts and manage your existing bots. The concept behind how the Telegram bot works is pretty simple. In this video, we will learn how to work with Telegram Bot using either the Webhook or the Long Polling methods.

How to do you write a Telegram Bot using the API in Delphi?

The session will also highlight how to work with the Telegram Bot API using the Delphi programming language. To work with Telegram Bot API, there are libraries offered by different programming languages like Delphi. Since Delphi library is not yet on the list provided by telegram in its repository, Alexander will introduce us to the so-called fastTelega that serves a Delphi Library for Telegram. Here, you will learn how to create a bot menu with the help of a hands-on application. We will also learn how to generate invoices using the FastReport VCL (reporting and document creation VCL Library for Delphi, C++ Builder, and more).

The video will walk us through the process of generating invoices in PDF format and how these invoices can be sent to the bot user. To learn more about Telegram bots, feel free to watch the video below.

Do you want to try the tips in this video for yourself? Why not télécharger une version d'essai gratuite de Delphi aujourd'hui?

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