User interface > Translation options > Type options > Type-map
At the type options a type map can be shown. If use user type-map is checked, the cells of the shown grid can be edited.
In the first column of the type map the names of Delphi built-in types and the second column the according names of the C++ types are listed. In the further columns some properties of the C++ types are given:
Size: size of the type in bytes
Minimum: minimum value of the type
Maximum: maximum value of the type
In System: true, if the type is defined in d2c_system or in System.h, else false.
The last column determines, whether the System namespace is prepended to the according type name in a header.
For example BOOL is a Windows type and therefore has not to be defined in the System namespace. E.g.:
longbool BOOL 4 -2147483648 2147483647 false
Under Linux however BOOL is unknown and could be defined in d2c_systypes.h
longbool BOOL 4 -2147483648 2147483647 true
size_t
In addition to the built-in types there is a size_t item, though no corresponding type exists in Delphi. The reason is, that sometimes Integer types are converted to size_t types in C++ and the properties of size_t determine whether some casts are written into the resulting code, which avoid warnings from the C++ compiler.
For C++Builder sometimes simple type identifiers are needed, because no space is allowed inside of a type identifier.