DevPrev

Cicode Programming Reference > Cicode Function Categories > Device Functions Introduction > DevPrev

DevPrev

Gets the previous record in a device. If the start of the database is reached, the EOF flag is set and an error code is returned.

Syntax

DevPrev(hDev)

hDev:

The device handle, returned from the DevOpen() function. The device handle identifies the table where all data on the associated device is stored.

Return Value

0 if the record is read successfully, or an error if the start of the database is reached.

Related Functions

DevOpen, DevEOF, DevNext

Example

Status=0;

I = 0;

hDev = DevOpen("Log", 0);

iError = DevSeek(hDev, DevSize(hDev)); ! seek to end 

WHILE iError = 0 DO

	DspText(20 + I, 0, DevGetField(hDev,"Tag"));

	I = I + 1;

	iError = DevPrev(hDev);

END

DevClose(hDev);