Transformation Guide

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Step 4. Fill Out the Method Stub with an Implementation

In the BankSoft example, return to the Class View tab of the Workspace window and expand the COM_VC_BankSoft classes item.

Expand the CBSoftFin item.

Expand the IBSoftFin item under the above item.

Right-click the FV item and choose Go to Definition.

Position the cursor in the edit window on the line after the TODO comment and add the following code:

double v = pow((1 + Rate), nPeriods);
*FV = -(
  (PresentValue * v) +
  (Payment * (1 + (Rate * PaymentType))) * ((v - 1) / Rate)
);

Since you refer to the pow function, you have to add the following preprocessor statement after all other include statements at the beginning of the file:

#include <math.h>

The final step is to build the DLL. When you build it, you register the COM procedure with the Windows registry.

Using Visual C++ to Develop COM Procedures

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Table of Contents

Transformation Guide

Transformation Guide

Step 4. Fill Out the Method Stub with an Implementation

Step 4. Fill Out the Method Stub with an Implementation