March 12, 2022

Delphi form data (TPF0) binary format

Delphi uses a Pascal-like syntax for .dfm files which are meant to store data about forms and various controls, but also other resources and miscellaneous data. These files are compiled to a special binary format and then used to construct and initialize the forms when the application starts.

I wanted to parse these files to retrieve some of the more useful data therefrom, but I wasn't able to find any documentation about the format, so I analyzed it myself and that means you don't have to. What follows is therefore a description of the format and the data model is stores. Some basic knowledge of principles of data storage is expected.