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Multi-Threaded ISAPI DLLs

Question:

Why can't my ISAPI DLL created in Delphi 3 handle multiple connections.

Answer:

Although the ISAPI DLL wizard in Delphi 3 creates a DLL that is multi-thread safe, there is an omission in the source code which fails to set a flag telling the application that the DLL is multi-thread safe. This shortcoming can be overcome by simply adding the line:

IsMultiThread := TRUE;

as the first line of your DPR's begin-end block.