生成二维码必备，使用简单。直接保存成QPixmap。 structzint_symbol*my_symbol=ZBarcode_Create(); my_symbol->symbology=BARCODE_QRCODE; my_symbol->scale=2; my_symbol->show_hrt=0; ZBarcode_Encode_and_Buffer(my_symbol,(unsignedchar*)m_keyString.toUtf8().data(),0,0); QPixmappixmap=Bitmap2Pixmap((unsignedchar