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What Does The OnIdle Event In DelphiVCL.Application Do?

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During Windows development, the OnIdle or DelphiVCL.Application.OnIdle occurs when an application becomes idle.

Write an OnIdle event handler to perform special processing when an application is idle. An application is idle when it is not processing code. For example, an application is idle when it is waiting for input from the user.

OnIdle is called only once, as the application transitions into an idle state. It is not called continuously unless the Done parameter is set to false. Applications that set Done to false consume an inordinate amount of CPU time, which affects overall system performance.

How to examine the properties and methods of the DelphiVCL.Application.OnIdle event?

Let’s browse all the properties, methods, and built-in properties of the DelphiVCL.Application.OnIdle using dir() command:

See the responses in our Windows command prompt:

What does the OnIdle Event in DelphiVCL.Application do? Screen 1

You can also read short information about the DelphiVCL.Application.OnIdle using the print() command:

See the responses in our Windows command prompt:

What does the OnIdle Event in DelphiVCL.Application do? Screen 2

 

How can I get started with Python GUI building with DelphiVCL?

Here are the articles with ready to run Python scripts to get you started with DelphiVCL Python GUI Builder:

Browse all the DelphiVCL library documentation here:

https://pythongui.org/category/delphivcl/

This documentation is updated regularly.

Check out DelphiVCL which easily allows you to build GUIs for Windows using Python.

Watch this comprehensive introduction to Python GUI Development with DelphiVCL library video by Jim McKeeth:

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