Unitech PA982 Manual do Utilizador descarregar pdf (Página 14)

"CHECKPARITY"="1"

Return:

BOOL: TRUE : OK

FALSE : Failure

2.2 Unregister the application from the USI.DLL

Function Description:

Unregister the application from the DLL. It will close the scanner port, and by default it will disable

the scanner.

Function call:

void USI_Unregister();

Return code:

None

2.3 Enable / Disable Scanner

Function Description:

To start or stop USI function. This function is useful for application to temporarily stop scanner

function if it is only need keypad input or keep clear input buffer.

Function call:

BOOL USI_EnableScan(BOOL bStatus);

Parameter: (input)

bStatus: TRUE : Enable Scanner

FALSE : Disable Scanner

Return:

BOOL : TRUE : OK

FALSE : Failure

2.4 Reset Scanner

Function Description:

Set the scanner to the working mode, and reset the communication control.

Function call:

BOOL USI_Reset();

Return:

Always TRUE

2.5 Get error code

Function Description:

Returns the error code (SERR_***).

Function call:

DWORD USI_GetError();

Return:

Returns the error code (SERR_***), which has been described in USI_Register function.

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Unitech PA982 Manual do Utilizador Página 14