QA: How can I get which platform my application is compiled for?

Question

I need to check OS version, platform and processor type at compile time. What preprocessor directives can I use?

Answer

When eVC performs compilation it sets environment variables for platform type and OS version - CePlatform and CEVersion. By default eVC projects are configured to map these variables to macros: Preprocessor definitions line in project settings contains "_WIN32_WCE=$(CEVersion),$(CePlatform)". Also each configuration contains a definition for processor type (ARM, MIPS, SH3, SH4 or x86). You can use #ifdef and #if directives to conditionally compile your code depending on these definitions.

CePlatform values for common CE-based platforms are shown in the following table.

Platform	CePlatform value
H/PC 2000	WIN32_PLATFORM_HPC2000
H/PC Pro 2.11	WIN32_PLATFORM_HPCPRO
Pocket PC	WIN32_PLATFORM_PSPC
Pocket PC 2002	WIN32_PLATFORM_PSPC=310
Smartphone 2002	WIN32_PLATFORM_WFSP=100

If you build your project for some other platform you can determine CePlatform value by including echo $(CePlatform) command in Post-build step command list (see Project->Settings, Post-build step tab). This command will output CePlatform value in the Output window after your project is compiled and linked.

Here are some code samples illustrating how to designate OS versions, platforms and processors in compile time.

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