arduino mfrc522 library

[dizgah]

hi every body
i need initialing mfrc522 rfid chips for my stm32f103 mcu,
i cant find a powerfull and fully commented library for that on keil,but i find a very good library with example for arduino and need to ported this library
its my first question :
what it this monster?

/**
 * Constructor.
 * Prepares the output pins.
 */
MFRC522::MFRC522(	byte chipSelectPin,		///< Arduino pin connected to MFRC522's SPI slave select input (Pin 24, NSS, active low)
					byte resetPowerDownPin	///< Arduino pin connected to MFRC522's reset and power down input (Pin 6, NRSTPD, active low)
				) {
	// Set the chipSelectPin as digital output, do not select the slave yet
	_chipSelectPin = chipSelectPin;
	pinMode(_chipSelectPin, OUTPUT);
	digitalWrite(_chipSelectPin, HIGH);
	
	// Set the resetPowerDownPin as digital output, do not reset or power down.
	_resetPowerDownPin = resetPowerDownPin;
	pinMode(_resetPowerDownPin, OUTPUT);
	digitalWrite(_resetPowerDownPin, LOW);
	
	// Set SPI bus to work with MFRC522 chip.
	setSPIConfig();
} // End constructor

im familiar with constructor & know all of the code except :

MFRC522[B]::[/B]MFRC522(	byte chipSelectPin,byte resetPowerDownPin) {

its not like other constructor i saw ,what's meaning of :: ?,can any one descibe it ?
tnks

 

[dizgah]

second question :
hi when i add a cpp library to keil project,it shows this error:
its while i have no problem with c libraries
tnks

 

[milan.rajik]

In

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Code C - [expand]
1
MFRC522::MFRC522(   byte chipSelectPin,     ///< Arduino pin connected to MFRC522's SPI slave select input (Pin 24, NSS, active low)

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The first MFRC522 before :: is the Class name and the second MFRC522(... is the method name which is in Class MFRC522. There is a name for :: but I don't remember. Read some C++ book.