A key goal of the 64-bit version of Windows is to make it easy for developers to use a single source-code base for their 32-bit and 64-bit applications. This overview describes how to make your source code support both 32-bit and 64-bit computing. Familiarity with existing Windows data types will help.

In this Section

• Abstract Data Models
• The New Data Types
• The Environment
• The Tools
• Rules for Using Pointers
• Virtual Address Space
• Fault Alignments
• Process Interoperability
• Drivers

Send comments about this topic to Microsoft

Build date: 11/1/2007