Installation API for Desktop Engine

Before installing an instance of the Microsoft® SQL Server™ 2000 Desktop Engine (MSDE 2000), your application setup process should first validate the proposed installation using the following Desktop Engine Installation API functions:

• NumInstalledInstances

  Returns the number of instances of SQL Server installed on the computer. There cannot be more than 16 instances installed.

• IsInstanceNameValid

  Checks whether the name for the new instance of SQL Server is already being used.

To use these functions in a setup program you are developing, you must:

1. Copy the file Validateinstance.h from C:\Program Files\Microsoft SQL Server\80\Tools\DevTools\Samples\Desktop to a folder in your compiler include path. Validateinstance.h contains the function prototypes for the Desktop Engine Setup API functions.
   
   
2. Copy the files Desktopenginedeploy.lib and Sqdedev.lib from C:\Program Files\Microsoft SQL Server\80\Tools\DevTools\Samples\Desktop to a folder in your compiler library path.

If the application setup program requires logic to interpret the Desktop Engine return codes, you should also copy the file Sqlserrors.h from C:\Program Files\Microsoft SQL Server\80\Tools\DevTools\Samples\Desktop to a folder in your compiler include path.