What's the Wow6432Node under the HKEY_LOCAL_MACHINE\SOFTWARE registry subkey?

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July 22, 2002 What's the Wow6432Node under the HKEY_LOCAL_MACHINE\SOFTWARE registry subkey? A Web Exclusive from FAQ for Windows John Savill Core InstantDoc #25995 FAQ for Windows	Email this Article Printer Friendly Reader Comments Digg This Del.icio.us RSS
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A. The Wow6432 registry entry indicates that you're running a 64-bit version of Windows. The OS uses this key to present a separate view of HKEY_LOCAL_MACHINE\SOFTWARE for 32-bit applications that run on a 64-bit version of Windows. When a 32-bit application queries a value under the HKEY_LOCAL_MACHINE\SOFTWARE\<company>\<product> subkey, the application reads from the HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\<company>\<product> subkey. The figure below shows the structure under Wow6432Node that 32-bit applications will see. A "registry reflector" copies certain values between the 32-bit and 64-bit registry views (e.g., mainly for COM registration) and resolves any conflicts using a last-writer-wins approach.

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So my question is how can i read 32 bit registry from my application i.e. HKEY_LOCAL_MACHINE\SOFTWARE\<company>\<product> subkey on a 64 bit version of windows from within installshield code.

Manish Kumar Garg June 21, 2004

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