Compartilhar via


RFX_Double

Transfers double float data between the field data members of a CRecordset object and the columns of a record on the data source of ODBC type SQL_DOUBLE.

void RFX_Double( 
   CFieldExchange* pFX, 
   const char* szName, 
   double& value  
);

Parameters

  • pFX
    A pointer to an object of class CFieldExchange. This object contains information to define the context for each call of the function. For more information about the operations a CFieldExchange object can specify, see the article Record Field Exchange: How RFX Works.

  • szName
    The name of a data column.

  • value
    The value stored in the indicated data member — the value to be transferred. For a transfer from recordset to data source, the value, of type double, is taken from the specified data member. For a transfer from data source to recordset, the value is stored in the specified data member.

Example

See RFX_Text.

Requirements

Header: afxdb.h

See Also

Reference

RFX_Text

RFX_Bool

RFX_Long

RFX_Int

RFX_Single

RFX_Date

RFX_Byte

RFX_Binary

RFX_LongBinary

CFieldExchange::SetFieldType

Concepts

MFC Macros and Globals