Datalogic Star Manuel d'installation télécharger pdf (Page 96)

STAR-LINK™

7.2 METHOD

METHOD DATAWRITE

PURPOSE

Sends data to a device.

DESCRIPTION

This method sends data as a string to a particular device. This operation is allowed

only when working in the DataEvent handler.

If the DataWrite command is not right, the control sends an error event

(ErrorEvent).

The possible values for the vt data parameter of this method are: VT_BSTR, VT_UI1,

VT_I2, VT_I4, VT_R4, VT_R8. In all these cases the control internally converts data

to be sent to an array of bytes having length Len.

IDL

[id(7), helpstring("method DataWrite")] HRESULT DataWrite([in] VARIANT Data, [in]

short Len, [out,retval] VARIANT_BOOL *bRet);

INPUT PARAMETERS

Data as VARIANT

Len as Short

OUTPUT VALUE

BOOL (TRUE if the sending data thread has been successfully created)

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Datalogic Star Manuel d'installation Page 96