• Saves Valuable Time
  • Trusted Accuracy for 12 Years
  • 15-Day Money-Back Guarantee

VB Equivalent to C++ Casts

The closest VB equivalent to the standard C++ casting operator is the DirectCast operator.  However, use of this operator is invalid in many cases where standard C++ casting is used:

e.g.,

This C++ code works fine:
i = (int)someDouble;

but the following VB code will not compile:
i = DirectCast(someDouble, Integer)

For this reason, the more reliable equivalent in VB is the CType macro and the related shortcut VB macros (CInt, CBool, etc.).

A further complication is that C++ integer casts always truncate, while the VB integer conversion macros always round.  For this reason, in order to achieve the same results as the C++ casts, a call to the .NET Math.Truncate function is required prior to the call to the CInt, CLng, and CShort macros when converting C++ integer casts.

e.g.,

This C++ code:
i = (int)someDouble;

has this VB equivalent:
i = CInt(Math.Truncate(someDouble))


Use C++ to VB Converter to convert from C++ to VB.     

Additional resource: VB.NET and C++ Equivalents


Copyright © 1997 – 2017 Tangible Software Solutions Inc.