DBASEgetDoubleByOffset |
Top Previous Next |
|
A field value as a stand-in zurückliefern. In a record a stand-in who is identified about the offset offset and the length length is searched. If no value can be found, becomes 0 zurückgeliefert. If the value is not interpretable as a stand-in, the zurückgelieferte value is undefined one. The offset and the length of field name is able with the function DBASEgetFieldOffsetAndLength are determined. Parametre buf (DBbuffer *) [IN] Act on the open data bank. elem (void *) [IN] A before selected record offset (long int) [IN] offset describes the position in the record. length (long int) [IN] length describes the length of the field value in the record from the position offset. Result (stands in) [OUT] The stand-in's value which is identified in the record about offset and length, or 0 if no field from exists offset. In the mistake case the value is undefined one. Declaration #include "dbase.h"
stand in for DLLENTRY DBASEgetDoubleByOffset ( DBbuffer * buf, void * elem, long int offset long int length ) Related functions
|