~~NOTOC~~
[[qr_code_api]] > [[BS2_WriteQRCode]]

----

===== BS2_WriteQRCode =====
[+ 2.8] ''X-Station 2'' CSN 카드 구조체에 QR코드로 사용할 문자열을 기록합니다. \\
QR코드로 사용할 데이터는, ASCII코드 32(' ')에서 126('~')까지의 문자들로 구성되며,최대 길이는 32자입니다.
==== 함수 ====
<code cpp>
#include "BS_API.h"

int BS2_WriteQRCode(const char* qrText, BS2CSNCard* card);
</code>

<callout type="info">
[[smartcard api#BS2CSNCard|BS2CSNCard 구조체 보기]]
</callout>
==== 파라미터 ====
  * [In] ''//qrText//'' : QR코드로 사용할 문자열
  * [Out] ''//card//'' : QR코드가 적용된 CSN 카드 구조체 포인터
==== 반환값 ====
성공적으로 수행될 경우 ''BS_SDK_SUCCESS''를 반환하고, 적절하지 않는 문자열이 전달되는 경우 BS_SDK_ERROR_INVALID_PARAM 오류 코드를 반환합니다.
==== 샘플코드 ====
C++
<code cpp>
if (qrSupported)
	{
		if (Utility::isYes("Would you like to register the QR code string to be used for authentication?"))
		{
			stringstream msg;
			msg << "Enter the ASCII QR code." << endl;
			msg << "  [ASCII code consisting of values between 32 and 126].";
			string qrCode = Utility::getInput<string>(msg.str());

			BS2CSNCard qrCard = { 0, };
			sdkResult = BS2_WriteQRCode(qrCode.c_str(), &qrCard);
			if (BS_SDK_SUCCESS != sdkResult)
			{
				TRACE("BS2_WriteQRCode call failed: %d", sdkResult);
			}
			else
			{
				size_t numOfRealloc = numOfCards + 1;
				BS2CSNCard* ptrNewCard = new BS2CSNCard[numOfRealloc];
				memset(ptrNewCard, 0x0, sizeof(BS2CSNCard) * numOfRealloc);

				if (0 < numOfCards && *cardObjs)
				{
					memcpy(ptrNewCard, *cardObjs, sizeof(BS2CSNCard) * numOfCards);
					delete[] * cardObjs;
					*cardObjs = NULL;
				}

				memcpy(ptrNewCard + numOfCards, &qrCard, sizeof(BS2CSNCard));
				*cardObjs = ptrNewCard;
				numOfCards++;
			}
		}
	}

BS2_ReleaseObject(uidObj);
</code>
C#
<code cpp>
 if (qrSupported)
            {
                Console.WriteLine("Would you like to register the QR code string to be used for authentication? [y/n]");
                Console.Write(">>>> ");
                if (Util.IsYes())
                {
                    Console.WriteLine("Enter the ASCII QR code.");
                    Console.WriteLine("  [ASCII code consisting of values between 32 and 126].");
                    Console.Write(">>>> ");
                    string qrCode = Console.ReadLine();

                    IntPtr qrCodePtr = Marshal.StringToHGlobalAnsi(qrCode);
                    BS2CSNCard qrCard = Util.AllocateStructure<BS2CSNCard>();
                    result = (BS2ErrorCode)API.BS2_WriteQRCode(qrCodePtr, ref qrCard);
                    if (BS2ErrorCode.BS_SDK_SUCCESS != result)
                    {
                        Console.WriteLine("Got error({0}).", result);
                    }
                    else
                    {
                        int numOfRealloc = userBlob.user.numCards + 1;
                        int structSize = Marshal.SizeOf(typeof(BS2CSNCard));
                        byte[] tempCard = new byte[structSize * userBlob.user.numCards];

                        if (0 < userBlob.user.numCards && IntPtr.Zero != userBlob.cardObjs)
                        {
                            Marshal.Copy(userBlob.cardObjs, tempCard, 0, structSize * userBlob.user.numCards);
                            Marshal.FreeHGlobal(userBlob.cardObjs);
                        }

                        userBlob.cardObjs = Marshal.AllocHGlobal(structSize * numOfRealloc);
                        if (0 < userBlob.user.numCards)
                        {
                            Marshal.Copy(tempCard, 0, userBlob.cardObjs, structSize * userBlob.user.numCards);
                        }

                        IntPtr curCardObjs = userBlob.cardObjs + structSize * userBlob.user.numCards;

                        byte[] qrArray = Util.StructToBytes<BS2CSNCard>(ref qrCard);
                        Marshal.Copy(qrArray, 0, curCardObjs, structSize);
                        userBlob.user.numCards++;

                        Marshal.FreeHGlobal(qrCodePtr);
                    }
                }
            }
Marshal.FreeHGlobal(authGroupIDObj);
BS2_ReleaseObject(uidObj);
</code>