Resource Strings

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If you have code in a Delphi unit that uses resource strings, the Delphi compiler (DCC32) generates a global variable and a corresponding preprocessor macro for each resource string when it generates the header file. The macros are used to automatically load the resource strings, and are intended to be used in your C++ code in all places where the resource string is referenced. For example, the resourcestring section in the Delphi code could contain:

unit MyUnit;


    Warning = 'Be careful when accessing string resources.';


The corresponding code generated by the Delphi compiler for C++Builder would be

extern PACKAGE System::Resource ResourceString _Warning;
#define Myunit_Warning System::LoadResourceString(&Myunit::_Warning)
  • Unit names are normalized in C++, as C++ is a case-sensitive language. That is why the unit name, "MyUnit", becomes "Myunit" in C++.
  • "_Warning", as any other instance of ResourceString generated by the Delphi compiler, is declared within the "Myunit" namespace, so you must access it as Myunit::_Warning.
  • The define line lets you use the exported Delphi resource string as "Myunit_Warning" without having to explicitly call LoadResourceString.

See Also