Office 2010 introduces a new version of Microsoft Visual Basic for Applications (VBA) known as VBA 7.0 that is updated to work with 64-bit client installations. VBA 7.0 improves the performance of your Microsoft Office applications through 64-bit performance improvements. VBA 7.0 also enables you to create applications that are compatible with Office 2007 or continue to use VBA solutions created in previous versions. To improve compatibility of application code targeted to a particular version of Microsoft Office, there is a compilation constant (VBA7) that enables you to determine the version of VBA you are using and execute the correct code. Note that if your applications are only written for the 32-bit versions of Microsoft Office, no changes are necessary to your code.
VBA 7.0 is the latest version of VBA that improves the performance of applications that are created in Office 2010. To enable you to continue using your legacy solutions in different versions of Microsoft Office, the VBA7 compilation constant is available. Likewise, because there is now a 32-bit version and 64-bit version of Office 2010, you use the Win64 compilation constant to direct the compiler to the run the correct section of code in your VBA applications.
#If Win64 Then
Declare PtrSafe Function GetTickCount64 Lib "kernel32" () As LongLong
#Else
Declare PtrSafe Function GetTickCount Lib "kernel32" () As Long
#End If