RAD Studio VCL Reference
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WideString Class

System::WideString represents strings of 16-bit characters.

Pascal
WideString = class;
C++
class WideString;

System::WideString represents strings of 16-bit characters. Each character is stored as a wchar_t value. The C++ class System::WideString is functionally equivalent to a Delphi intrinsic type, also called System::WideString.

Note: Although System::WideString is a platform-independent data type and often appears in cross-platform code, System::WideString is also useful for working with Microsoft's Component Object Model (COM) System::WideString values are easily converted to or from the BSTR values used in COM.
 

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