Windows 7: 32-bit or 64-bit?

[Chopper77]

I have an LCVI 2009 application that must run on Windows 7.  Further, it must be able to tell if the machine is 32-bit or 64-bit.  Without resorting to  directory name comparisons, is there a way to determine 32-bit or 64-bit?

Thanks

[Brad_K]

Hi Chopper77,

Is your program compiled as 32-bit, 64-bit, or both? 32-bit programs can use IsWow64Process() to determine whether the OS is 32-bit or 64-bit. 64-bit programs already know the answer. If your program is compiled as both 32-bit and 64-bit, use the C preprocessor to determine whether to call IsWow64Process() or not.

Note that not all 32-bit Windows OSes support this IsWow64Process(), so you should use GetProcAddress() instead of importing the symbol at link time.

Brad

[Chopper77]

My app is compiled as a 32-bit app.

Is there an LCVI equivalent of IsWow64Process?

[Brad_K]

Hi Chopper77,

I don't know of one, but you can call Windows API functions from LabWindows/CVI applications. You may need to go into the Programs and Features control panel and modify your LabWindows/CVI installation to include support for the Windows SDK.

Brad