Writing 64-Bit WIA Drivers for Extended Processors

Updated: April 30, 2004

File name: WIA-64bit.doc
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This paper provides information about writing WIA drivers for the Microsoft Windows for 64-bit extended processors family of operating systems. It specifically explains how interoperability issues with 32-bit applications trying to access 64-bit WIA minidriver UI extensions are resolved. It provides guidelines for scanner and digital camera vendors to make sure their devices work with PCs based on the x64 hardware architecture.

This information applies for the following operating systems:
Microsoft Windows XP 64-bit edition for extended processors
Microsoft Windows Server 2003 64-bit edition for extended processors
(Standard, Enterprise, and Datacenter Editions)
Microsoft Windows Vista

For up-to-date information, see “64-bit and WIA” in the Windows Driver Kit documentation at http://msdn2.microsoft.com/en-us/library/aa488942.aspx.

Included in this white paper:

• Introduction

• 64-bit WIA Driver Components

• 32-bit Application / 64-bit WIA Minidriver Interoperability

• References