Use nullptr instead of NULL. Use cstdint instead of stdint.h.

backends/barcode/QrEncode.cpp

@@ -60,7 +60,7 @@ namespace glabels
 			bool QrCode::encode( const std::string& cookedData, glbarcode::Matrix<bool>& encodedData )
 			{
 				QRcode *qrcode = QRcode_encodeString( cookedData.c_str(), 0, QR_ECLEVEL_M, QR_MODE_8, 1 );
-				if ( qrcode == NULL )
+				if ( qrcode == nullptr )
 				{
 					return false;
 				}

glbarcode/BarcodeDataMatrix.cpp

@@ -22,7 +22,7 @@
 
 #include "Constants.h"
 
-#include <stdint.h>
+#include <cstdint>
 #include <vector>
 #include <cctype>
 #include <algorithm>

glbarcode/BarcodeOnecode.h

@@ -24,7 +24,7 @@
 
 #include "Barcode1dBase.h"
 
-#include <stdint.h>
+#include <cstdint>
 
 
 namespace glbarcode