4. Write the code ValidateCard.cpp list for implementing function functions
// ValidateCard.cpp: Implementation of CvalidateCard
#include "stdafx.h"
#include "validatecreditcardserver.h"
#include "validatecard.h"
/
// CVALIDATECARD
StdMethodimp CvalidateCard :: Validatecreditcard (BSTR BSTRCCNO, BSTR BSTRCCTYPE, LONG * VAL)
{
AFX_MANAGE_STATE (AFXGETSTATICModuleState ())
// Todo: Add Your Implementation Code Here
CString Strtype (BSTRCCTYPE);
Strtype.makeupper ();
IF (strtype.compare ("VISA") == 0)
BSTRCCTYPE = SYSAllocstring (Olestr ("V"));
Else IF ("Master") == 0)
BSTRCCTYPE = SYSALLOCSTRING (Olestr ("m");
Else IF ("American") == 0)
BSTRCCTYPE = SYSALLOCSTRING (Olestr ("a");
Else
{
* VAL = 0;
Return S_FALSE;
}
IF ((BSTRCCNO, BSTRCCTYPE) == S_OK) && (Lengthcheck (BSTRCCNO, BSTRCCTYPE) == S_OK) && (Luhncheck (BSTRCCNO, BSTRCCTYPE) == S_OK))
{
* VAL = 1;
Return S_OK;
}
Else
{
* VAL = 0;
Return S_FALSE;
}
Return S_FALSE;
}
StdMethodimp Cvalidatecard :: Luhncheck (BSTR BSTRCCNO, BSTR BSTRCCTYPE)
{
AFX_MANAGE_STATE (AFXGETSTATICModuleState ())
// Todo: Add Your Implementation Code Here
CSTRING STROBJ (BSTRCCNO);
Cstring strreverse, strfinal
Int Inum, ISUM;
Char ctemp;
Strreverse = strobj;
Strreverse.makereverse ();
For (int itemp = 0; itemp { CTEMP = strreverse.getat (itemp); Inum = ATOI (& CTEMP); IF (itemp% 2! = 0) { Inum = inum * 2; IF (inum> 9) INUM- = 9; } CTEMP = Inum '0'; Strfinal = CTEMP; } ITEMP = 0; itemp { Ctemp = strfinal.get (item); isum = atoi (& CTEMP); } IF (ISUM% 10 == 0) Return S_OK; Else Return S_FALSE; } StdMethodimp CvalidateCard :: LengthCheck (BSTR BSTRCCNO, BSTR BSTRCCTYPE) { AFX_MANAGE_STATE (AFXGETSTATICModuleState ()) // Todo: Add Your Implementation Code Here CString Strtype (BSTRCCTYPE), STRLENGTH (BSTRCCNO); Ilen = Strlength.getLength (); IF (strtype == "v") { IF (ilen == 16) Return S_OK; } Else IF (strtype == "m") { IF (ilen == 16) Return S_OK; } Else IF (strtype == "a") { IF (ilen == 15) Return S_OK; } Return S_FALSE; } STDMETHODIMP CVALIDATECard :: Prefixcheck (BSTR BSTRCCNO, BSTR BSTRCCTYPE) { AFX_MANAGE_STATE (AFXGETSTATICModuleState ()) // Todo: Add Your Implementation Code Here CString Strnumber (BSTRCCNO), Strtype (BSTRCCTYPE); IF (strtype == "v") { IF (Strnumber.Find ("4", 0)> = 0) Return S_OK; } Else IF (strtype == "m") { IF (Strnumber.Find ("51", 0)> = 0 || Strnumber.Find ("52", 0)> = 0 || Strnumber.Find ("53", 0)> = 0 || Strnumber.Find ("54", 0)> = 0) Return S_OK; } Else IF (strtype == "a") { IF (Strnumber.Find ("34", 0)> = 0 || Strnumber.Find ("37", 0)> = 0) Return S_OK; } Return S_FALSE; } 5. Cenine Clearness will read the ValidateCard.RGS file automatically registration, if you run the Regsvr32 program, please see Developing COMPONENTS Using VC-ATL (2-3) COM object registration role At the same time, after completion, will Generate validatecreditcardServer.dll in debug directory In the Debug on the first floor directory, the engineering name workspace directory generates validatecreditcardServer.tlb Both files can be imported into the client, and the two methods are introduced separately. Author Blog: http://blog.9cbs.net/callzjy/
