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vsprintf, vswprintf (Windows CE 5.0)

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Developing an Application > Microsoft C Run-time Library for Windows CE > Run-time Library Reference > vprintf Functions

Write formatted output using a pointer to a list of arguments.

int vsprintf( char *buffer, constchar *format, va_listargptr);int vswprintf( wchar_t *buffer, constwchar_t *format, va_listargptr);

Parameters

  • buffer
    Storage location for output.
  • format
    Format specification.
  • argptr
    Pointer to list of arguments.

Return Values

vsprintf and vswprintf return the number of characters written, not including the terminating null character, or a negative value if an output error occurs. For vswprintf, a negative value is also returned if count or more wide characters are requested to be written.

Remarks

These functions are supported by all versions of the C run-time libraries.

Each of these functions takes a pointer to an argument list, then formats and writes the given data to the memory pointed to by buffer.

The following table shows generic-text routine mappings for this function.

TCHAR.H Routine _UNICODE Defined
_vstprintf vswprintf

For more information about TCHAR.H routines, see Generic Text Mappings.

Requirements

OS Versions: Windows CE 2.0 and later.

Header: stdarg.h, stdlib.h, wtypes.h.

Link Library: coredll.dll.

See Also

fprintf | printf | sprintf

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