Argox PA-60 Manuel d'utilisateur télécharger pdf (Page 68)

Programming Manual 64

GetComInfo

Get com identifier index and amount from device hardware.

DWORD GetComInfo

{

int *nComSum,

LPCWSTR pComValue,

int *nComValueLen

}

Parameters

nComSum

[out] Receive the device com amount

pComValue

[out] The buffer to receive the device com identifier index

nComValueLen

[in/out] The pComValue buffer max size. If terminal com value length >

nComValueLen, the nComValueLen receive current com value length.

Returned Values

If the action succeeds, the returned value is E_FUNC_SUCCEED. If the action fails,

possible returned value is E_FUNC_ERROR, BT_ERR_INSUFFICIENT.

Remarks

If function return BT_ERR_INSUFFICIENT, nComValueLen will receive the com

value length of terminal.

Example

WCHAR * pComValue;

int nComSum = 0, nComValueLen = 10;

pComValue = new WCHAR[nComValueLen];

DWORD dwErr = GetComInfo(&nComSum, pComValue, & nComValueLen);

If(dwErr == BT_ERR_INSUFFICIENT){

Delete pComValue;

pComValue = new WCHAR[nComValueLen];

GetComInfo(&nComSum, pComValue, & nComValueLen);

}

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Argox PA-60 Manuel d'utilisateur Page 68