MagTek MAGTEK - Manual (Page 67)

Section 5. Application Programmable Interface
61
McpGet
This function is used to get the value of a property from the MCP driver MCP device application.
Properties can be accessed through their property ID or property name.
DWORD McpGet( HANDLE hDevice, PMCPBUS pMCPBUS );
Parameters
hDevice
Handle to the specified device (communications resource) to get the property. This handle was
returned from the McpOpen function.
pMCPBUS
Pointer to the MCPBUS structure used by the MCP API function to perform this operation.
The following structure members are used as input parameters.
Member Meaning
dwOperAttribute MCP_ATTR_NONE - get an MCP device property
MCP_ATTR_PROP_DRIVER - get an MCP driver property
dwApplicationID Application ID (not used if MCP_ATTR_PROP_DRIVER is set)
lpszPropertyName Pointer to null terminated property name. NULL if using a Property ID
dwPropertyID Property ID. Used only if lpszPropertyName is NULL and
MCP_ATTR_NONE is set in dwOperAttribute.
dwPropertyType Property type. Used for type verification.
lpOutBuffer Pointer to storage buffer to receive the property value
dwOutBufferSize Size (in bytes) of storage buffer pointed to by lpOutBuffer
The following structure members are used as output parameters.
Member Meaning
lpOutBuffer The buffer pointed to by this member contains the returned property
value
dwResponseLen Length (in bytes) of property value returned in the buffer pointed to by
lpOutBuffer