Lazarus IDE

About

Lazarus IDE is a free/open source Integrated Development Environment for Free Pascal.

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For information about the language, see Free Pascal

How to

• Re-add a lost form to a project:
  • create a new form with a temporary name
  • save the project
  • delete the 2 form-related files it creates
  • rename the files for the form you want to load to that temporary name
  • (untested) re-save the form under its permanent name

Errors

• no FPC sources (solution: install package "fpc-source")
• no valid package file (.lpk) was found

Links

Reference

• Wikipedia
• Lazarus Documentation
  • default library packages:
    • FCL: Free Component Library
      • Reference for package 'fcl'
      • Index of all identifiers in package 'fcl'
    • LCL: Lazarus Component Library
      • Reference for package 'lcl' (hierarchical)
      • Index of all identifiers in package 'lcl' (alphabetic)
    • RTL: Free Pascal Run-Time Library
      • Reference for package 'rtl'
      • Index of all identifiers in package 'rtl'

Tutorials

• Lazarus Programming Tutorials (at Sheep Dog Guides)
• Free Pascal Tutorials - Lazarus Program Example Code (at SchoolFreeware)