Measurement Computing Personal Daq rev.6.0 - Manual (Page 153)

Personal Daq User’s Manual Appendix B, 887095 API Commands B-21
daqGetDeviceCount
DLL Function daqGetDeviceCount(DWORD *deviceCount);
C daqGetDeviceCount(DWORD *deviceCount);
Visual BASIC VBdaqGetDevice&(deviceCount&)
Delphi daqGetDeviceCount(deviceCount:PDWORD);
Parameters deviceCount Pointer to which the device count is to be returned
Returns DerrNoError No error
See Also daqGetDeviceList, daqGetDeviceProperties
Program References ADCEX1.C, FREQEX1.C, PULSEEX1.C, MULTEX1.C, DIGEX1.C, INITEX1.C, DAQEX.FRM (VB),
DAQEX.PAS (Delphi)
Used With All devices
Description
daqGetDeviceCount returns the number of currently configured devices. This function will return the number of devices currently
configured in the system. The Personal Daq devices need to be present for this function to operate properly.
daqGetDeviceList
DLL Function DaqGetDeviceList(daqDeviceListT *deviceList, DWORD *deviceCount);
C DaqGetDeviceList(DaqDeviceListT *deviceList, DWORD *deviceCount);
Visual BASIC VbdaqGetDeviceList&(ByRef deviceList() As String, ByRef deviceCount&)
Delphi daqGetDeviceList(deviceList:DeviceListTP; devCount:PDWORD);
deviceList Pointer to memory location to which the device list is to be returned Parameters
deviceCount Number of devices returned in the device list
Returns DerrNoError No error
See Also daqGetDeviceCount, daqGetDeviceProperties, daqOpen,
Program References ADCEX1.C, FREQEX1.C, PULSEEX1.C, MULTEX1.C, DIGEX1.C, INITEX1.C, DAQEX.FRM (VB),
DAQEX.PAS (Delphi)
Used With All devices
Description
daqGetDeviceList returns a list of currently configured devices. This function will return the device names in the deviceList
parameter for the number of devices returned by the deviceCount parameter. Each deviceList entry contains a device name
consisting of up to 64 characters. The device name can then be used with the daqOpen function to open the specific device.
daqGetDeviceProperties
DLL Function daqGetDeviceProperties(LPSTR daqName, daqDevicePropsT *deviceProps);
C daqGetDeviceProperties(LPSTR daqName, DaqDevicePropsT *deviceProps);
Visual BASIC VBdaqGetDeviceProperties&(ByVal daqName$, deviceProps As daqDevicePropsT)
Delphi daqGetDeviceProperties(daqName:string; deviceProps: daqDevicePropsTP);
daqName Pointer to a character string representing the name of the device for which to retrieve
properties
Parameters
DeviceCount Number of devices returned in the device list
Returns DerrNoError No error
See Also daqGetDeviceCount, daqGetDeviceList, daqOpen
Program References ADCEX1.C, FREQEX1.C, PULSEEX1.C, MULTEX1.C, DIGEX1.C, INITEX1.C, DAQEX.FRM (VB),
DAQEX.PAS (Delphi)
Used With All devices
Description
daqGetDeviceProperties returns the properties for the specified device as indicated by the daqName parameter. This name should be
a valid name of a configured device. The properties for the device are returned in the deviceProps parameter. deviceProps is a
pointer to user-allocated memory which will hold the device-properties structure. This memory must have been allocated before calling this
function.
For detailed device-property structure layout, refer the to daq Device Properties Definition table.