class
<ios> <iostream>
std::wios
typedef basic_ios<wchar_t> ios;
Base class for wide character streams
This class is an instantiation of basic_ios designed to serve as base class for all wide stream classes, with wchar_t as character type (see basic_ios for more info on the template).
It instantiates basic_ios with the following template parameters:
| template parameter | definition | comments |
|---|
| charT | wchar_t | Aliased as member char_type |
| traits | char_traits<wchar_t> | Aliased as member traits_type |
Member types
Along with the member types inherited from ios_base :
- event
- Type to indicate event type (public member type)
- event_callback
- Event callback function type (public member type)
- failure
- Base class for stream exceptions (public member class)
- fmtflags
- Type for stream format flags (public member type)
- Init
- Initialize standard stream objects (public member class)
- iostate
- Type for stream state flags (public member type)
- openmode
- Type for stream opening mode flags (public member type)
- seekdir
- Type for stream seeking direction flag (public member type)
Public member functions
Note: This section links to the references for members of its basic template (basic_ios ).
- (constructor)
- Construct object (public member function)
- (destructor)
- Destroy object (public member function)
State flag functions:
- good
- Check whether state of stream is good (public member function)
- eof
- Check whether eofbit is set (public member function)
- fail
- Check whether failbit or badbit is set (public member function)
- bad
- Check whether badbit is set (public member function)
- operator!
- Evaluate stream (not) (public member function)
- operator bool
- Evaluate stream (public member function)
- rdstate
- Get error state flags (public member function)
- setstate
- Set error state flag (public member function)
- clear
- Set error state flags (public member function)
Formatting:
- copyfmt
- Copy formatting information (public member function)
- fill
- Get/set fill character (public member function)
Other:
- exceptions
- Get/set exceptions mask (public member function)
- imbue
- Imbue locale (public member function)
- tie
- Get/set tied stream (public member function)
- rdbuf
- Get/set stream buffer (public member function)
- narrow
- Narrow character (public member function)
- widen
- Widen character (public member function)
Protected member functions
- init
- Initialize object (protected member function)
- move
- Move internals (protected member function)
- swap
- Swap internals (protected member function)
- set_rdbuf
- Set stream buffer (protected member function)
Public member functions inherited from ios_base
- flags
- Get/set format flags (public member function)
- setf
- Set specific format flags (public member function)
- unsetf
- Clear specific format flags (public member function)
- precision
- Get/Set floating-point decimal precision (public member function)
- width
- Get/set field width (public member function)
- imbue
- Imbue locale (public member function)
- getloc
- Get current locale (public member function)
- xalloc
- Get new index for extensible array [static] (public static member function)
- iword
- Get integer element of extensible array (public member function)
- pword
- Get pointer element of extensible array (public member function)
- register_callback
- Register event callback function (public member function)
- sync_with_stdio
- Toggle synchronization with cstdio streams [static] (public static member function)