\u3000\u3000CFile\u7c7b\u63d0\u4f9b\u4e86\u5bf9\u6587\u4ef6\u8fdb\u884c\u6253\u5f00\uff0c\u5173\u95ed\uff0c\u8bfb\uff0c\u5199\uff0c\u5220\u9664\uff0c\u91cd\u547d\u540d\u4ee5\u53ca\u83b7\u53d6\u6587\u4ef6\u4fe1\u606f\u7b49\u6587\u4ef6\u64cd\u4f5c\u7684\u57fa\u672c\u529f\u80fd\uff0c\u8db3\u4ee5\u5904\u7406\u4efb\u610f\u7c7b\u578b\u7684\u6587\u4ef6\u64cd\u4f5c<\/p>\n
\n\u4e00\u4e2a\u8bfb\u5199\u6587\u4ef6\u7684\u4f8b\u5b50\uff1a
\n\u6587\u4ef6I\/O<\/p>\n
\u3000\u3000\u867d\u7136\u4f7f\u7528CArchive\u7c7b\u5185\u5efa\u7684\u5e8f\u5217\u5316\u529f\u80fd\u662f\u4fdd\u5b58\u548c\u52a0\u8f7d\u6301\u4e45\u6027\u6570\u636e\u7684\u4fbf\u6377\u65b9\u5f0f\uff0c\u4f46\u6709\u65f6\u5728\u7a0b\u5e8f\u4e2d\u9700\u8981\u5bf9\u6587\u4ef6\u5904\u7406\u8fc7\u7a0b\u62e5\u6709\u66f4\u591a\u7684\u63a7\u5236\u6743\uff0c\u5bf9\u4e8e\u8fd9\u79cd\u6587\u4ef6\u8f93\u5165\u8f93\u51fa\uff08I\/O\uff09\u670d\u52a1\u7684\u9700\u6c42\uff0cWindows\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u76f8\u5173\u7684API\u51fd\u6570\uff0c\u5e76\u7531MFC\u5c06\u5176\u5c01\u88c5\u4e3aCFile\u7c7b\uff0c\u63d0\u4f9b\u4e86\u5bf9\u6587\u4ef6\u8fdb\u884c\u6253\u5f00\uff0c\u5173\u95ed\uff0c\u8bfb\uff0c\u5199\uff0c\u5220\u9664\uff0c\u91cd\u547d\u540d\u4ee5\u53ca\u83b7\u53d6\u6587\u4ef6\u4fe1\u606f\u7b49\u6587\u4ef6\u64cd\u4f5c\u7684\u57fa\u672c\u529f\u80fd\uff0c\u8db3\u4ee5\u5904\u7406\u4efb\u610f\u7c7b\u578b\u7684\u6587\u4ef6\u64cd\u4f5c\u3002CFile\u7c7b\u662fMFC\u6587\u4ef6\u7c7b\u7684\u57fa\u7c7b\uff0c\u652f\u6301\u65e0\u7f13\u51b2\u7684\u4e8c\u8fdb\u5236\u8f93\u5165\u8f93\u51fa\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u4e0eCArchive\u7c7b\u7684\u914d\u5408\u4f7f\u7528\u800c\u652f\u6301\u5bf9MFC\u5bf9\u8c61\u7684\u5e26\u7f13\u51b2\u7684\u5e8f\u5217\u5316\u3002<\/p>\n
\u3000\u3000CFile\u7c7b\u5305\u542b\u6709\u4e00\u4e2a\u516c\u6709\u578b\u6570\u636e\u6210\u5458m_hFile\uff0c\u8be5\u6570\u636e\u6210\u5458\u5305\u542b\u4e86\u540cCFile\u7c7b\u5bf9\u8c61\u76f8\u5173\u8054\u7684\u6587\u4ef6\u53e5\u67c4\u3002\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u53e5\u67c4\uff0c\u5219\u8be5\u503c\u4e3aCFile::hFileNull\u3002\u7531\u4e8e\u8be5\u6570\u636e\u6210\u5458\u6240\u5305\u542b\u7684\u610f\u4e49\u53d6\u51b3\u4e8e\u6d3e\u751f\u7684\u7c7b\uff0c\u56e0\u6b64\u4e00\u822c\u5e76\u4e0d\u5efa\u8bae\u4f7f\u7528m_hFile\u3002<\/p>\n
\u3000\u3000\u901a\u8fc7CFile\u7c7b\u6765\u6253\u5f00\u6587\u4ef6\u53ef\u4ee5\u91c7\u53d6\u4e24\u79cd\u65b9\u5f0f\uff1a\u4e00\u79cd\u65b9\u5f0f\u662f\u5148\u6784\u9020\u4e00\u4e2aCFile\u7c7b\u5bf9\u8c61\u7136\u540e\u518d\u8c03\u7528\u6210\u5458\u51fd\u6570Open\uff08\uff09\u6253\u5f00\u6587\u4ef6\uff0c\u53e6\u4e00\u79cd\u65b9\u5f0f\u5219\u76f4\u63a5\u4f7f\u7528CFile\u7c7b\u7684\u6784\u9020\u51fd\u6570\u53bb\u6253\u5f00\u4e00\u4e2a\u6587\u4ef6\u3002\u4e0b\u9762\u7684\u8bed\u53e5\u5206\u522b\u6f14\u793a\u4e86\u7528\u8fd9\u4e24\u79cd\u65b9\u6cd5\u6253\u5f00\u78c1\u76d8\u6587\u4ef6\u201cC:\\TestFile.txt\u201d\u7684\u8fc7\u7a0b\uff1a<\/p>\n
\/\/ \u5148\u6784\u9020\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u7136\u540e\u518d\u6253\u5f00\u6587\u4ef6
\nCFile file;
\nfile.Open(\u201cC:\\\\TestFile.txt\u201d, CFile::modeReadWrite);
\n\u2026\u2026
\n\/\/ \u76f4\u63a5\u901a\u8fc7\u6784\u9020\u51fd\u6570\u6253\u5f00\u6587\u4ef6
\nCFile file(\u201cC:\\\\TestFile.txt\u201d, CFile::modeReadWrite);<\/p>\n
\u3000\u3000\u5176\u4e2d\u53c2\u6570CFile::modeReadWrite\u662f\u6253\u5f00\u6587\u4ef6\u7684\u6a21\u5f0f\u6807\u5fd7\uff0cCFile\u7c7b\u4e2d\u4e0e\u4e4b\u7c7b\u4f3c\u7684\u6807\u5fd7\u8fd8\u6709\u5341\u51e0\u4e2a\uff0c\u73b0\u96c6\u4e2d\u5217\u8868\u5982\u4e0b\uff1a<\/p>\n
\u6587\u4ef6\u6a21\u5f0f\u6807\u5fd7 \u8bf4\u660e
\nCFile::modeCreate \u521b\u5efa\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6\uff0c\u5982\u6587\u4ef6\u5df2\u5b58\u5728\u5219\u5c06\u5176\u957f\u5ea6\u8bbe\u7f6e\u4e3a0
\nCFile::modeNoInherit \u4e0d\u5141\u8bb8\u7ee7\u627f
\nCFile::modeNoTruncate \u521b\u5efa\u6587\u4ef6\u65f6\u5982\u6587\u4ef6\u5df2\u5b58\u5728\u4e0d\u5bf9\u5176\u8fdb\u884c\u622a\u65ad
\nCFile::modeRead \u53ea\u8bfb\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6
\nCFile::modeReadWrite \u8bfb\u5199\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6
\nCFile::modeWrite \u5199\u5165\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6
\nCFile::shareCompat \u5728\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u5141\u8bb8\u5176\u4ed6\u8fdb\u7a0b\u540c\u65f6\u6253\u5f00\u6587\u4ef6
\nCFile::shareDenyNone \u5728\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u5141\u8bb8\u5176\u4ed6\u8fdb\u7a0b\u5bf9\u6587\u4ef6\u8fdb\u884c\u8bfb\u5199
\nCFile::shareDenyRead \u5728\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u4e0d\u5141\u8bb8\u5176\u4ed6\u8fdb\u7a0b\u5bf9\u6587\u4ef6\u8fdb\u884c\u8bfb\u53d6
\nCFile::shareDenyWrite \u5728\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u4e0d\u5141\u8bb8\u5176\u4ed6\u8fdb\u7a0b\u5bf9\u6587\u4ef6\u8fdb\u884c\u5199\u5165
\nCFile::shareExclusive \u53d6\u6d88\u5bf9\u5176\u4ed6\u8fdb\u7a0b\u7684\u6240\u6709\u8bbf\u95ee
\nCFile::typeBinary \u8bbe\u7f6e\u6587\u4ef6\u4e3a\u4e8c\u8fdb\u5236\u6a21\u5f0f
\nCFile::typeText \u8bbe\u7f6e\u6587\u4ef6\u4e3a\u6587\u672c\u6a21\u5f0f<\/p>\n
\u3000\u3000\u8fd9\u4e9b\u6807\u5fd7\u53ef\u4ee5\u901a\u8fc7\u201c\u6216\u201d\u8fd0\u7b97\u7b26\u800c\u540c\u65f6\u4f7f\u7528\u591a\u4e2a\uff0c\u5e76\u4ee5\u6b64\u6765\u6ee1\u8db3\u591a\u79cd\u9700\u6c42\u3002\u4f8b\u5982\uff0c\u9700\u8981\u4ee5\u8bfb\u5199\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6\uff0c\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\u5c31\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\uff0c\u5982\u679c\u6587\u4ef6\u5df2\u7ecf\u5b58\u5728\u5219\u4e0d\u5c06\u5176\u6587\u4ef6\u957f\u5ea6\u622a\u65ad\u4e3a0\u3002\u4e3a\u6ee1\u8db3\u6b64\u6761\u4ef6\uff0c\u53ef\u7528CFile::modeCreate\u3001CFile::modeReadWrite\u548cCFile::modeNoTruncate\u7b49\u51e0\u79cd\u6587\u4ef6\u6a21\u5f0f\u6807\u5fd7\u6765\u6253\u5f00\u6587\u4ef6\uff1a<\/p>\n
CFile file (\"C:\\\\TestFile.txt\", CFile::modeCreate | CFile::modeReadWrite | CFile::modeNoTruncate);<\/p>\n
\u3000\u3000\u5728\u6253\u5f00\u7684\u6587\u4ef6\u4e0d\u518d\u4f7f\u7528\u65f6\u9700\u8981\u5c06\u5176\u5173\u95ed\uff0c\u5373\u53ef\u4ee5\u7528\u6210\u5458\u51fd\u6570Close\uff08\uff09\u5173\u95ed\u4e5f\u53ef\u4ee5\u901a\u8fc7CFile\u7c7b\u7684\u6790\u6784\u51fd\u6570\u6765\u5b8c\u6210\u3002\u5f53\u91c7\u53d6\u540e\u4e00\u79cd\u65b9\u5f0f\u65f6\uff0c\u5982\u679c\u6587\u4ef6\u8fd8\u6ca1\u6709\u88ab\u5173\u95ed\uff0c\u6790\u6784\u51fd\u6570\u5c06\u8d1f\u8d23\u9690\u5f0f\u8c03\u7528Close\uff08\uff09\u51fd\u6570\u53bb\u5173\u95ed\u6587\u4ef6\uff0c\u8fd9\u4e5f\u8868\u660e\u521b\u5efa\u5728\u5806\u4e0a\u7684CFile\u7c7b\u5bf9\u8c61\u5728\u8d85\u51fa\u8303\u56f4\u540e\u5c06\u81ea\u52a8\u88ab\u5173\u95ed\u3002\u7531\u4e8e\u8c03\u7528\u4e86\u5bf9\u8c61\u7684\u6790\u6784\u51fd\u6570\uff0c\u56e0\u6b64\u5728\u6587\u4ef6\u88ab\u5173\u95ed\u7684\u540c\u65f6CFile\u5bf9\u8c61\u4e5f\u88ab\u9500\u6bc1\uff0c\u800c\u91c7\u53d6Close\uff08\uff09\u65b9\u5f0f\u5173\u95ed\u6587\u4ef6\u540e\uff0cCFile\u5bf9\u8c61\u4ecd\u7136\u5b58\u5728\u3002\u6240\u4ee5\uff0c\u5728\u663e\u5f0f\u8c03\u7528Close\uff08\uff09\u51fd\u6570\u5173\u95ed\u4e00\u4e2a\u6587\u4ef6\u540e\u53ef\u4ee5\u7ee7\u7eed\u7528\u540c\u4e00\u4e2aCFile\u5bf9\u8c61\u53bb\u6253\u5f00\u5176\u4ed6\u7684\u6587\u4ef6\u3002<\/p>\n
\u3000\u3000\u6587\u4ef6\u8bfb\u5199\u662f\u6700\u5e38\u7528\u7684\u6587\u4ef6\u64cd\u4f5c\u65b9\u5f0f\uff0c\u4e3b\u8981\u7531CFile\u7c7b\u6210\u5458\u51fd\u6570Read\uff08\uff09\u3001Write\uff08\uff09\u6765\u5b9e\u73b0\u3002\u5176\u51fd\u6570\u539f\u578b\u5206\u522b\u4e3a\uff1a<\/p>\n
UINT Read( void* lpBuf, UINT nCount );
\nvoid Write( const void* lpBuf, UINT nCount );<\/p>\n
\u3000\u3000\u53c2\u6570lpBuf\u4e3a\u6307\u5411\u5b58\u653e\u6570\u636e\u7684\u7f13\u5b58\u7684\u6307\u9488\uff0cnCount\u4e3a\u8981\u8bfb\u5165\u6216\u5199\u5165\u7684\u5b57\u8282\u6570\uff0cRead\uff08\uff09\u8fd4\u56de\u7684\u4e3a\u5b9e\u9645\u8bfb\u53d6\u7684\u5b57\u8282\u6570\uff0c\u8be5\u6570\u503c\u5c0f\u4e8e\u6216\u7b49\u4e8enCount\uff0c\u5982\u679c\u5c0f\u4e8enCount\u5219\u8bf4\u660e\u5df2\u7ecf\u8bfb\u5230\u6587\u4ef6\u672b\u5c3e\uff0c\u53ef\u4ee5\u7ed3\u675f\u6587\u4ef6\u8bfb\u53d6\uff0c\u5982\u7ee7\u7eed\u8bfb\u53d6\uff0c\u5c06\u8fd4\u56de0\u3002\u56e0\u6b64\u901a\u5e38\u53ef\u4ee5\u5c06\u5b9e\u9645\u8bfb\u53d6\u5b57\u8282\u6570\u662f\u5426\u5c0f\u4e8e\u6307\u5b9a\u8bfb\u53d6\u7684\u5b57\u8282\u6570\u6216\u662f\u5426\u4e3a0\u4f5c\u4e3a\u5224\u65ad\u6587\u4ef6\u8bfb\u53d6\u662f\u5426\u5230\u8fbe\u7ed3\u5c3e\u7684\u4f9d\u636e\u3002\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\u6f14\u793a\u4e86\u5bf9\u6587\u4ef6\u8fdb\u884c\u4e00\u6b21\u6027\u5199\u5165\u548c\u5faa\u73af\u591a\u6b21\u8bfb\u53d6\u7684\u5904\u7406\u8fc7\u7a0b\uff1a<\/p>\n
\/\/ \u521b\u5efa\u3001\u5199\u5165\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6
\nCFile file;
\nfile.Open(\"C:\\\\TestFile.txt\", CFile::modeWrite | CFile::modeCreate);
\n\/\/ \u5199\u5165\u6587\u4ef6
\nmemset(WriteBuf, 'a', sizeof(WriteBuf));
\nfile.Write(WriteBuf, sizeof(WriteBuf));
\n\/\/ \u5173\u95ed\u6587\u4ef6
\nfile.Close();
\n\/\/ \u53ea\u8bfb\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6
\nfile.Open(\"C:\\\\TestFile.txt\", CFile::modeRead);
\nwhile (true)
\n{
\n\/\/ \u8bfb\u53d6\u6587\u4ef6\u6570\u636e
\nint ret = file.Read(ReadBuf, 100);
\n\u2026\u2026
\n\/\/ \u5982\u679c\u5230\u8fbe\u6587\u4ef6\u7ed3\u5c3e\u5219\u4e2d\u6b62\u5faa\u73af
\nif (ret < 100)
\nbreak;
\n}
\n\/\/ \u5173\u95ed\u6587\u4ef6
\nfile.Close();<\/p>\n
\u3000\u3000Write\uff08\uff09\u548cRead\uff08\uff09\u51fd\u6570\u6267\u884c\u5b8c\u540e\u5c06\u81ea\u52a8\u79fb\u52a8\u6587\u4ef6\u6307\u9488\uff0c\u56e0\u6b64\u4e0d\u5fc5\u518d\u663e\u793a\u8c03\u7528Seek\uff08\uff09\u51fd\u6570\u53bb\u5b9a\u4f4d\u6587\u4ef6\u6307\u9488\u3002\u5305\u542b\u6709\u6587\u4ef6\u5b9a\u4f4d\u51fd\u6570\u7684\u5b8c\u6574\u4ee3\u7801\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
\/\/ \u521b\u5efa\u3001\u5199\u5165\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6
\nCFile file;
\nfile.Open(\"C:\\\\TestFile.txt\", CFile::modeWrite | CFile::modeCreate);
\n\/\/ \u5199\u5165\u6587\u4ef6
\nmemset(WriteBuf, 'a', sizeof(WriteBuf));
\nfile.SeekToBegin();
\nfile.Write(WriteBuf, sizeof(WriteBuf));
\n\/\/ \u5173\u95ed\u6587\u4ef6
\nfile.Close();
\n\/\/ \u53ea\u8bfb\u65b9\u5f0f\u6253\u5f00\u6587\u4ef6
\nfile.Open(\"C:\\\\TestFile.txt\", CFile::modeRead);
\nwhile (true)
\n{
\n\/\/ \u6587\u4ef6\u6307\u9488
\nstatic int position = 0;
\n\/\/ \u79fb\u52a8\u6587\u4ef6\u6307\u9488
\nfile.Seek(position, CFile::begin);
\n\/\/ \u8bfb\u53d6\u6587\u4ef6\u6570\u636e
\nint ret = file.Read(ReadBuf, 100);
\nposition += ret;
\n\u2026\u2026
\n\/\/ \u5982\u679c\u5230\u8fbe\u6587\u4ef6\u7ed3\u5c3e\u5219\u4e2d\u6b62\u5faa\u73af
\nif (ret < 100)
\nbreak;
\n}
\n\/\/ \u5173\u95ed\u6587\u4ef6
\nfile.Close();<\/p>\n
<\/p>\n
\u8865\u5145\uff1a<\/p>\n
\u4f7f\u7528CFile\u7c7b\u5bf9\u6587\u4ef6\u8fdb\u884c\u6309\u7ed3\u6784\u8bfb\u53d6,\u5982\uff1a<\/p>\n
CFile fileRead,fileWrite;
\n fileRead.Open(_T(\"E:\\\\a.dat\"),CFile::modeRead);\/\/\u8fd9\u91cc\u4f7f\u7528\u5b8f_T
\n fileWrite.Open(_T(\"E:\\\\backup.txt\"),CFile::modeCreate | CFile::modeWrite);<\/p>\n
VIDEOHEADER *videoheader=new VIDEOHEADER();
\nfileRead.Read(videoheader,sizeof(VIDEOHEADER));
\nchar buf[sizeof(VIDEOHEADER)*8];
\nsprintf(buf,\"videoheader.cCommandID:%s ,videoheader->cCommandID);\u901a\u8fc7sprintf\u5bf9\u6211\u4eec\u9700\u8981\u5199\u5165\u6587\u4ef6\u4e2d\u7684\u6570\u636e\u8fdb\u884c\u683c\u5f0f\u5316\uff0c\u8fd9\u6837\u5728\u6587\u4ef6\u4e2d\u5b58\u50a8\u7684\u6570\u636e\u5c31\u662f\u4ee5\u8fd9\u91cc\u5b9a\u4e49\u7684\u683c\u5f0f\u663e\u793a\u7684\u3002
\nfileWrite.Write(buf,strlen(buf)); <\/p>\n","protected":false},"excerpt":{"rendered":"
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