Language Support for the RAD Studio Libraries (C++)

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C++Builder leverages the Rapid Application Development (RAD) capabilities of the RAD Studio libraries, which are compiled in Delphi:

• The Visual Component Library (VCL)
• The FireMonkey
• The run-time library (RTL)

This section of the help:

• Explains how Delphi language features, constructs, and concepts have been implemented in C++Builder to support these RAD Studio libraries.
• Compares C++ and Delphi object models, describing how C++Builder combines these two approaches.
• Describes how Delphi language constructs were translated into C++ counterparts in C++Builder.
• Includes details on keyword extensions that were added to support the libraries. Some of these extensions, like closures and properties, are useful features independent of their support for libraries-based code.

Note: References to C++ classes derived from System.TObject refer to classes for which TObject is the ultimate, but not necessarily immediate, ancestor. For consistency with the compiler diagnostics, such classes are also referred to as "Delphi style classes."

Topics

• C++ and Delphi Class Models
  • Inheritance and Interfaces
  • Object Identity and Instantiation
  • Object Construction for C++Builder Libraries
  • Calling Virtual Methods in Base Class Constructors
  • Object Destruction
  • AfterConstruction and BeforeDestruction
  • Class Virtual Functions
• Support for Delphi Data Types and Language Concepts
  • Typedefs
  • C++ Iterator Support for Delphi Enumerable Types and Containers
  • C++ Classes that Support the Delphi Language
  • C++ Language Counterparts to the Delphi Language
  • Open Arrays
  • Types Defined Differently
  • Delphi to C++ types mapping
  • Delphi Interfaces
  • Resource Strings
  • Default Parameters
  • Run-time Type Information
  • Unmapped Types
  • C++ Keyword Extensions
  • The __declspec Keyword Extension
  • C++ Assignment Operator as the Delphi Implicit Operator

See Also

• __declspec(pascalimplementation)