Free pascal tcolor install#

_published section in classes, _property declarations, _fastcall calling convention that is Delphi-compatible, _delegate types for pointers to object instance methods, etc) and the runtime and library are written with some internal representation in mind (e.g. In C++ Builder the VCL is written in Object Pascal (and it even includes a Pascal compiler and linker), the language has been extended considerably to support Object Pascal-isms (e.g. Now, LCL would be very hard to port to C++ because it is really built around Object Pascal features like a rich RTTI with explicitly exported properties, component streaming, 'default' accessors, enums, sets, object instance method pointers and other features that C++ does not support at a language level. With that in mind and considering the context i guess you meant LCL.

Free pascal tcolor install#

FPGUI uses FCL but not LCL) and if you install just Free Pascal you only get FCL, not LCL. The 'backing' field of a property is almost always private, since the idea of a property is to encapsulate all outside access to it.Note that the Free Pascal/Lazarus equivalent to VCL is two libraries: FCL and LCL, with the former being part and developed by the developers of Free Pascal and the latter being part and developed by the developers of Lazarus (while there is an overlap, they are two different projects with different teams). Make it a function, not a property, if using it has a side effect or returns something random. The value of the property should not change unexpectedly. Again, the good convention is to make it behave like a constant, at least constant for this object instance with this state. The read-only properties are often used to make some field read-only from the outside. The idea is that after M圜lass.MyProperty := 123 the programmer can expect that M圜lass.MyProperty = 123. Do not convert or scale the requested value. Do not reject invalid values silently in the 'setter' (raise an exception if you must). The setter function should always set the requested value, such that calling the getter yields it back. This is in fact one of the cool possibilities of a 'getter' function. Note that it’s OK for getter to have some invisible side-effect, for example to cache a value of some calculation (known to produce the same results for given instance), to return it faster next time. Using COM interfaces with reference-counting disabled More stuff inside classes and nested classes Callbacks (aka events, aka pointers to functions, aka procedural variables) Containers (lists, dictionaries) using generics How the exceptions are displayed by various libraries Finally (doing things regardless if an exception occurred) Free notification observer (Castle Game Engine)

Virtual methods, override and reintroduce

Exposing one unit identifiers from another Enumerated and ordinal types and sets and constant-length arrays Testing single expression for multiple values (case) Logical, relational and bit-wise operators