National Instruments 320682C SetBreakOnLibraryErrors

Chapter 8 Utility Library

Parameter Discussion

moduleID is the value LoadExternalModule returns. buffer is a character array in

which you can pass information to and from the module.

RunExternalModule requires that the module define the following function:

void _xxx_entry_point (char [])

where xxx is the base name of the file, in lowercase. For example, if the pathname of the

file is as follows:

C:\LW\PROGRAMS\TEST01.OBJ

then the name of the entry point must be:

_test01_entry_point

Example

int module_id;

int status;

char *pathname;

pathname = "EXTMOD.OBJ";

module_id = LoadExternalModule (pathname);

if (module_id <0)

FmtOut ("Unable to load %s\n", pathname);

else {RunExternalModule (module_id, "");

UnloadExternalModule (module_id);

}

SetBreakOnLibraryErrors

int oldState = SetBreakOnLibraryErrors (int newState);

Purpose

When debugging is enabled and a National Instruments library function reports an error,

LabWindows/CVI can display a runtime error dialog box and suspend execution. You can use

this function to enable or disable this feature.

In general, it is best to use the Break on library errors checkbox in the Run Options command

of the Project window to enable or disable this feature. You should use this function only when

you want the temporarily disable the Break on library errors feature around a segment of code.

This function does not affect the state of the Break on library errors checkbox in the Run

Options command of the Project window.