GetVariableField
GetVariableField return the address of the begining of the variable field requested.unsigned __int64 GetVariableField ( unsigned int tableID, unsigned int variableField, void** returnPosition, CODBPP::Object *object = NULL ); unsigned __int64 GetVariableField ( unsigned int tableID, unsigned int variableField, unsigned int subField, unsigned int row, void** returnPosition, CODBPP::Object *object = NULL );
Parameters
| tableID | the table ID defining the table's handle. |
| variableField | the position of the variable field, the first variable field is 0. |
| subField | the position of the sub-field within the CODBPP::SUB_TABLE, the first field is 0 whether fixed or variable. |
| row | the row for the sub-field required, 0 for the first. |
| returnPosition | pointer for the returned position. |
| object | enables the user to re-grab the object handles. |
Return Values
If the method succeeds, the return value is zero else see error codes for more details.Remarks
Example Use
- C++
#include "ODBPP.h"
#define TABLE_ONE 1
struct VariableObject{
int First;
double Second;
enum {FirstVar, SecondVar};
};
int wmain(int argc, wchar_t* argv[])
{
const char16_t *message;
CODBPP database;
if(database.BeginTransaction() == NO_ERROR
&& database.OpenTable(TABLE_ONE) == NO_ERROR
&& database.ReadObject(TABLE_ONE,CODBPP::FIRST) == NO_ERROR
&& database.GetVariableField(TABLE_ONE,VariableObject::SecondVar,&message) == NO_ERROR)
MessagaBox(message);
else if(database.GetErrorMessage(&message) == NO_ERROR) MessageBox(message);
database.EndTransaction();
return NO_ERROR;
}Also See
ReadObject, PutVariableValuesListen All
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