Detect Windows Kit 8.0 and Windows Kit 8.1 SDKs

Question

I\'m working on a test script for Windows Tablets, Windows Phones and Windows Store apps. The scripts are mostly working for under Visual Studio 2012 and Windows Kit 8.0 SDK. It

Answer 1

If you look in "C:\Program Files (x86)\Windows Kits\8.1\Include\shared\winapifamily.h" on line 115, you'll see that the WINAPI_FAMILY value has to be one of WINAPI_FAMILY_DESKTOP_APP, WINAPI_FAMILY_PC_APP, or WINAPI_FAMILY_PHONE_APP (Windows 10 adds WINAPI_FAMILY_SYSTEM and WINAPI_FAMILY_SERVER to the mix). This implies that your command-line flag /DWINAPI_FAMILY=WINAPI_PARTITION_DESKTOP should instead be /DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP when you build for Windows 8.1 or 10. However, if you leave it out, you'll get the default you want - see line 57 in the Windows 8.1 SDK version of winapifamily.h.

After the check, the next thing the header does is define the WINAPI_PARTITION_* values based on which WINAPI_FAMILY values are set. Notice that they are all either 1 or 0, where in Windows 8.0, the WINAPI_PARTITION_APP value was always 0x00000002. Conceivably, you could test whether WINAPI_PARTITION_APP is set to 1 instead of 0x00000002 to determine if the SDK in use was building an 8.1 app instead of an 8.0 app:

#if defined(WINAPI_PARTITION_APP)
#if (WINAPI_PARTITION_APP == 0x00000002)
#define USING_WINDOWS_8_0_SDK
#endif
#if defined(WINAPI_FAMILY_SYSTEM)
#define USING_WINDOWS_10_SDK
#else
#if (WINAPI_PARTITION_APP == 1)
#define USING_WINDOWS_8_1_SDK
#endif
#endif
#endif

I haven't actually tried this, since I haven't needed to switch within my code based on which SDK is in use.