Поделиться через

VARSTRING (Windows Embedded CE 6.0)

  • Статья

1/6/2010

This structure is used for returning variably sized strings. It is used both by the line device class and the phone device class.

Syntax

typedef struct varstring_tag {
  DWORD dwTotalSize;
  DWORD dwNeededSize;
  DWORD dwUsedSize;
  DWORD dwStringFormat;
  DWORD dwStringSize;
  DWORD dwStringOffset;
} VARSTRING, FAR* LPVARSTRING;

Members

  • dwTotalSize
    Total size, in bytes, allocated to this data structure.
  • dwNeededSize
    Size, in bytes, for this data structure that is needed to hold all the returned data.
  • dwUsedSize
    Size, in bytes, of the portion of this data structure that contains useful data.
  • dwStringFormat
    Value that specifies the format of the string. This member uses STRINGFORMAT.
  • dwStringSize
    Size, in bytes, of the variably sized device field that contains the string data.
  • dwStringOffset
    Offset, in bytes, from the beginning of this data structure.

Remarks

No extensibility.

If a string cannot be returned in a variable structure, the dwStringSize and dwStringOffset members are set in one of these ways:

  • dwStringSize and dwStringOffset members are both set to zero.
  • dwStringOffset is nonzero and dwStringSize is zero.
  • dwStringOffset is nonzero, dwStringSize is 1, and the byte at the given offset is zero.

Requirements

Header tapi.h
Windows Embedded CE Windows CE 1.0 and later

See Also

Reference

TAPI Structures
lineConfigDialogEdit
lineGetDevConfig
lineGetID
lineSetDevConfig
LINECALLPARAMS