error C2440

Hi Gurus,
Here i have pasted the sample code( i could n't paste the entire code ). when i compiled the code, i got the error

HTML Code:

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"../TalhAggrApp.C(291) : error C2440: 'initializing' : cannot convert from 'unsig
ned int (__thiscall talhAggrSchema::*)(void)' to 'unsigned int'
        Conversion is a valid standard conversion, which can be performed implic
itly or by use of static_cast, C-style cast or function-style cast"

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Following is the code snippet:

Headerfile

Code:

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namespace environment
{
// now we are talking about long long (64 bits) integers.
typedef long int int8;
typedef unsigned long int uint8;
typedef int int4;
typedef unsigned int uint4;
typedef short int int2;
typedef unsigned short int uint2;
typedef signed char int1;
typedef unsigned
}
using namespace environment;
class talhAggrSchema
{
uint4 elementID;
uint4 machineID;
uint4 taGroupID;
uint4 taProtoID;
uint4 taTosID;
eDirection taDirection;
string souceAddr_List[50]; //consider of having vector of Addr_List instead of Array
string dstAddr_List[50]; //consider of having vector of Addr_List instead of Array
string addr_List[50];
uint4 proto_number;
uint4 tos;
public:
talhAggrSchema():elementID(0),
machineID(0),
taGroupID(0),
taProtoID(0),
taTosID(0),
taDirection(static_cast<eDirection>(UNKNOWN)),
proto_number(0),
tos(0)
{
//todo: ganad01 initialize the addr_List
}
~talhAggrSchema()
{
}
uint4 getelementID(void) { return elementID; }
void setelementID(uint4 elemID) {elementID = elemID;}
uint4 getMachineID(void) { return machineID; }
void setMachineID(uint4 mID) { machineID = mID;}
uint4 getGroupID(void) { return taGroupID; }
void setGroupID(uint4 grpID) { taGroupID = grpID; }
uint4 getProtoID(void) {return taProtoID; }
void setProtoID(uint4 proID) { taProtoID = proID; }
void setAddList(talhAggrSchema& record, uint4 viewID, uint4 groupID) {}
uint4 getTosID(void) { return taTosID; }
void setTosID(uint4 tosID) { taTosID = tosID; }
uint4 getDirection(void) { return taDirection; }
void setDirection( eDirection dir ) { taDirection = dir; }
uint4 getProtocol(void) { return proto_number; }
void setProNumber(uint4 proNum) { proto_number = proNum; }
uint4 getTOS(void) { return tos; }
void setTos(uint4 tos ) { tos = tos;}
};
typedef vector<talhAggrSchema*> VaggrSchemas;
 
class MultiAggregation
{
//holds different aggregation requests read from NH_ELEMENT
VaggrSchemas aggrSchemaCache;
//Local cache that holds the raw table content
//VRawRecord rawRecordCache;
//Local Cache that stores aggregated data, Live Ex expected format
VProcessedDataCache aggregationCache;
DuConnection &conn;
MultiAggregation() {}
public:
MultiAggregation(DuConnection &connection):conn(connection)
{
}
~MultiAggregation()
{
}
bool setupAllAggrSchemas( void );
bool setProtocol(talhAggrSchema *as);
};

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Source File

Code:

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//header file is included
using namespace environment;
bool MultiAggregation::setupAllAggrSchemas( void )
{
pAggrSchema = new talhAggrSchema();
setProtocol(pAggrSchema);
}
 
bool MultiAggregation::setProtocol(talhAggrSchema *as)
{
//DuConnection& conn = DuDatabase::singleInstance ()->getConnection (); todo: ganad01 remove this line
DuStatement* stmt = conn.createStatement ();
DuResultSet* rs;
char query[MAX_QUERY_LENGTH];
uint4 protoID = as->getProtoID; \\error:2440
snprintf(query,
MAX_QUERY_LENGTH,
"SELECT proto_number FROM %s WHERE proto_id != %d",
"NH_PROTCOL"
,protoID
);
stmt->setSQL (query);
// global::pLog->debug( "setProtocol::Reading NH_PROTCOL" );
Bool result = stmt->executeSQL (DuStatement::DuAutoAlloc, &rs, 1000);
CuAssertMsg (result, query);
bool success = false;
success = getRecordFromResultSet(rs, as, 1);
if (!success)
{
// todo: ganad01 issue a warning about a failed record
return false;
}
return true;
} //setProtocol

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can you please help me to understand the cause of error and to eliminate the error.

It seems you have a function pointer.

Try this:

Code:

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uint4 protoID = (as->*getProtoID)();

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I believe you need to actually call the function.
Change

Code:

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uint4 protoID = as->getProtoID; \\error:2440

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to

Code:

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uint4 protoID = as->getProtoID();

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Hope that helps.

hi krmed,
Thanks a Ton!
Thanks a Ton!
Thanks a TON!

My eyes could not catch, yes, i am required to call the function.