Measurement Computing ADLIB WIN - Manual (Page 74)

Chapter 20 Triggering Modes 19-6
19.5 AL_GetTriggerStruct
Prototype C\C++
ERRNUM AL_GetTriggerStruct(LHLD lhld, LPTRIG lptrigStruct);
Visual Basic for Windows
Function AL_GetTriggerStruct(ByVal lhld As Long,
lptrigStruct As TRIGGER) As Long
LHLD lhld
handle of the LDSD
LPTRIG lptrigStruct address of the user trigger structure
The AL_GetTriggerStruct function provides access to all LDSD trigger settings.
Parameter Description
lhld Identifies the instance of the logical device subsystem.
lptrigStruct Specifies a 32 bit far pointer to a trigger information structure. This structure
has been pre-defined in the ADLIB include file and is defined as follows:
typedef struct tagTRIGGER
{
char
achTrigModeName[MAX_OPTIONS_NAME_STRING];
long lTrigModeId;
char
achTrigSrcName[MAX_OPTIONS_NAME_STRING];
long lTrigSrcId;
char
achTrigSrcSignalName[MAX_OPTIONS_NAME_STRING];
long lTrigSrcSignalId;
long
lTrigRateUnits;
double dTrigRate;
long
lPostSampleCount;
}TRIGGER;
typedef TRIGGER FAR * LPTRIG;
Returns:
On success ERRNUM is set to 1 and the lptrigStruct structure is filled with the device's triggering settings,
otherwise ERRNUM contains the last error code that occurred during the call and the lptrigStruct structure
may contain invalid information.
Related Functions:
AL_SetTriggerMode
AL_SetTriggerSource
AL_SetTrigSourceSignal
AL_SetPostSampleCount
AL_SetTriggerOutput
AL_GetTriggerOutput
Supported Logical Device Subsystems:
Pci55xx Series: ADC0, DAC0