Gets the next record in a device. If the end of the database is reached, the EOF flag is set and an error code is returned.
The device handle, returned from the DevOpen() function. The device handle identifies the table where all data on the associated device is stored.
0 if the next record is read, or an error if the end of the database is reached.
I = 0;
hDev = DevOpen("Log", 0);
WHILE Status = 0 DO
DspText(20 + I, 0, DevGetField(hDev,"Tag"));
I = I + 1;
Status = DevNext(hDev);