API

From wizarPOS
Revision as of 07:54, 12 April 2018 by Mahong (talk | contribs)

Functions

The calling sequence is open>query_status>begin>write>end>close. Please notice that:

  • write method is used for printing content.
  • print content should be between begin method and end method.
  • query_status should be between open method and close method, but should not be between begin method and end method
open
 int printer_open()

Open the printer device.This operation should be used before other operations.

Parameters

Returns

The result code, >= 0, success; <0 error code.

begin
 int printer_begin()

Prepare to print, the app should print data after this funciton.

Parameters

Returns

The result code, >= 0, success; <0 error code.

end
 int printer_end()

End to print,the begin and end apis are pair operations.

Parameters

Returns

The result code, >= 0, success; <0 error code.

close
 int printer_close()

Close the device.The open and close apis are pair operations. If you don’t want to use the device, you should call close to release the device.

Parameters

Returns

The result code, >= 0, success; <0 error code.

query_status
 int printer_query_status()

Query the status of the printer.This api should be used inner open and close, but not inner begin and end.


Parameters

Returns

The result code, == 1, has paper; == 0, success; <0 error code.

write
 int printer_write(unsigned char* pData, int nDataLength)

Write data to the device. The data can be String, Bitmap data or ESC Commands.


Parameters

pData data or ESC command
nDataLength Length of data

Returns

The result code, >= 0, success; <0 error code.

read
query_voltage