About властивість

About is a published TPdf property that returns the component version string from AboutInfo. It is exposed for Object Inspector and streaming compatibility and is marked stored False in Lib\PDFium.pas.

Assigning a value is ignored by the component; the property is informational and does not load, save, render, or modify PDF document content.

• Use it to check the installed PDFiumPas component build at design time or runtime.
• Because it is not stored, it does not add version text to .dfm or .lfm files during normal component streaming.
• Use Active, FileName, and Password for document loading behavior; About is not part of the PDF workflow.

Read the value when you need to display or log the installed component version.

ShowMessage(Pdf1.About);