National Instruments 320685D-01 Chapter 2 Using Loadable Compiled Modules, Chapter 3 Windows 95/NT Compiler/Linker Issues

Contents

LabWindows/CVI Programmer Reference Manual vi

National Instruments Corporation

General Protection Errors..................................................................................1-11

Library Protection Errors..................................................................................1-11

Disabling User Protection.................................................................................1-12

Disabling Protection Errors at Run-Time...........................................1-12

Disabling Library Errors at Run-Time...............................................1-12

Disabling Protection for Individual Pointer........................................1-12

Disabling Library Protection Errors for Functions.............................1-13

Details of User Protection.................................................................................1-14

Pointer Casting...................................................................................1-14

Dynamic Memory...............................................................................1-15

Avoid Unassigned Dynamic Allocation in

Function Parameters..........................................................1-15

Library Functions...............................................................................1-16

Unions.................................................................................................1-16

Stack Size........................................................................................................................1-16

Include Paths...................................................................................................................1-17

Include Path Search Precedence.......................................................................1-17

Chapter 2Using Loadable Compiled Modules

About Loadable Compiled Modules...............................................................................2-1

Advantages and Disadvantages of Using Loadable Compiled Modules

inLabWindows/CVI ......................................................................................2-2

Using a Loadable Compiled Module as an Instrument Driver

ProgramFile ...................................................................................................2-2

Using a Loadable Compiled Module as a User Library....................................2-3

Using a Loadable Compiled Module in the Project List...................................2-3

Using a Loadable Compiled Module as an External Module...........................2-4

Notification of Changes in Run State...............................................................2-4

Example 1...........................................................................................2-5

Example 2...........................................................................................2-6

Using Run State Change Callbacks in a DLL...................................................2-6

Compiled Modules that Contain Asynchronous Callbacks..............................2-7

Chapter 3Windows 95/NT Compiler/Linker Issues

Loading 32-Bit DLLs under Windows95/NT ................................................................3-1

DLLs for Instrument Drivers and User Libraries..............................................3-2

Using The LoadExternalModule Function....................................................... 3-2

Link Errors when Using DLL Import Libraries................................................3-2

DLL Path (.pth) Files Not Supported................................................................3-2

16-Bit DLLs Not Supported..............................................................................3-2