National Instruments 320685D-01 Creating Object Files in LabWindows/CVI, Calling Windows SDK Functions in LabWindows/CVI

Chapter 3 Windows95/NT Compiler/Linker Issues

LabWindows/CVI Programmer Reference Manual 3-26

National Instruments Corporation

Creating Object Files in LabWindows/CVI

You can create an object file in LabWindows/CVI in one of two ways:

• Include a source (.c) file in your project. Enable the Compile into Object option for the

source file by double-clicking in the space next to the filename in the Project window

under the column marked “O”. Compile the file.

• Open a source (.c) file and select the Create Object File command in the Options menu

of the Source window.

In LabWindows/CVI for Windows95/NT, you can choose to create an object file for only the

currently selected compiler or to create object files for all four compatible external compilers.

Note Do not set the default calling convention to __stdcall if you want to create a

static object for all four compatible external compilers.

Calling Windows SDK Functions in LabWindows/CVI

You can call Windows SDK Functions in LabWindows/CVI for Windows95/NT. If you

install the LabWindows/CVI full development system from CD-ROM, you can call all

the Windows SDK functions. Otherwise, you can call only a subset of the Windows SDK

functions.

To view help for the SDK functions, select the Windows SDK command in the Help menu

of any LabWindows/CVI window.

You must include the SDK include files before the LabWindows/CVI include files. In this

way, you avoid problems that arise from function name and typedef conflicts between the

Windows SDK and the LabWindows/CVI libraries. The LabWindows/CVI include files

contain special macros and conditional compilation to adjust for declarations in the SDK

include files. Thus, LabWindows/CVI must process the SDK include files first, followed by

the LabWindows/CVI include files.

When you compile in LabWindows/CVI or when you use an external compiler to compile

your source files for linking in LabWindows/CVI, use the LabWindows/CVI SDK include

files. The LabWindows/CVI SDK include files are in the cvi\sdk\include directory. The

LabWindows/CVI compiler automatically searches the cvi\sdk\include directory. You

do not have to add it to your include paths.

When you use an external compiler to compile and link your source files, you must use the

SDK include files that come with the external compiler. If you use an external compiler to

compile your source files for linking in LabWindows/CVI, use the LabWindows/CVI SDK