如何在delphi中使用c语言写的函数？？？ 急
关键词：delphi,dll
有几个用标准c语言写的函数，是一个算法，在一个.c的文件里， 现在需要在delphi中使用， 我应当怎样做啊？ 我也看了一些相关的资料，一定要用dll吗？？ 假如只能用dll，那crc16.c的文件怎样转成dll啊？ 请各位高手不吝指导。。 真是多谢啊。。 急！！
您可以用BCB编译为DLL。 也可以编译为OBJ文件，在DELPHI中连接。 也可以用DELPHI将其改写。
可以直接转成DLL的。 您的代码是不是CRC校验的。有DELPHI代码啊.
程序就上这个了， 楼上真的有delphi的代码吗？？ 那对我就太重要了。。。。。 多谢啊 // CRC16余式表 const WORD crc16_table[16]= { 0x0000, 0x1081, 0x2102, 0x3183, 0x4204, 0x5285, 0x6306, 0x7387, 0x8408, 0x9489, 0xa50a, 0xb58b, 0xc60c, 0xd68d, 0xe70e, 0xf78f }; // CRC-ITU 原始算法，逆序 WORD CalcCRC16(BYTE * pPtr,WORD nCount) { WORD wCRC,i; wCRC = 0; while (nCount > 0) { nCount--; wCRC = wCRC ^ (WORD)(0xFF&*pPtr++); for (i=0; i<8; i++) { if (wCRC & 0x0001) wCRC = wCRC >> 1 ^ 0x8408; else wCRC = wCRC >> 1; } } wCRC = (wCRC<< 8) | ((wCRC >> 8) & 0xFF); return wCRC; } // CRC-ITU 逆序,查表 WORD CalcCRC16R(BYTE * pPtr,WORD nCount) { BYTE ucTmp; WORD wCRC=0; while(nCount-- > 0) { ucTmp = (BYTE)(wCRC&0x000f); wCRC >>= 4; wCRC ^= crc16_table [ucTmp^(*pPtr&0x0f)]; ucTmp = (BYTE)(wCRC&0x000f); wCRC >>= 4; // wCRC ^= crc16_table [ucTmp^(*pPtr/16)]; wCRC ^= crc16_table [ucTmp^(*pPtr>>4)]; pPtr++; } ucTmp = wCRC >> 8; wCRC <<= 8; wCRC |= ucTmp; return wCRC; }
Unit Crc16; Interface { Note: Your crc Variable must be initialized to 0, before } { using tis routine. } { Translated to Turbo Pascal (tm) V4.0 March, 1988 by J.R.Louvau } { } Function UpdCrc(cp: Byte; crc: Word): Word; Implementation (* crctab calculated by Mark G. Mendel, Network Systems Corporation *) Const crctab : Array[0..255] of Word = ( $0000, $1021, $2042, $3063, $4084, $50a5, $60c6, $70e7, $8108, $9129, $a14a, $b16b, $c18c, $d1ad, $e1ce, $f1ef, $1231, $0210, $3273, $2252, $52b5, $4294, $72f7, $62d6, $9339, $8318, $b37b, $a35a, $d3bd, $c39c, $f3ff, $e3de, $2462, $3443, $0420, $1401, $64e6, $74c7, $44a4, $5485, $a56a, $b54b, $8528, $9509, $e5ee, $f5cf, $c5ac, $d58d, $3653, $2672, $1611, $0630, $76d7, $66f6, $5695, $46b4, $b75b, $a77a, $9719, $8738, $f7df, $e7fe, $d79d, $c7bc, $48c4, $58e5, $6886, $78a7, $0840, $1861, $2802, $3823, $c9cc, $d9ed, $e98e, $f9af, $8948, $9969, $a90a, $b92b, $5af5, $4ad4, $7ab7, $6a96, $1a71, $0a50, $3a33, $2a12, $dbfd, $cbdc, $fbbf, $eb9e, $9b79, $8b58, $bb3b, $ab1a, $6ca6, $7c87, $4ce4, $5cc5, $2c22, $3c03, $0c60, $1c41, $edae, $fd8f, $cdec, $ddcd, $ad2a, $bd0b, $8d68, $9d49, $7e97, $6eb6, $5ed5, $4ef4, $3e13, $2e32, $1e51, $0e70, $ff9f, $efbe, $dfdd, $cffc, $bf1b, $af3a, $9f59, $8f78, $9188, $81a9, $b1ca, $a1eb, $d10c, $c12d, $f14e, $e16f, $1080, $00a1, $30c2, $20e3, $5004, $4025, $7046, $6067, $83b9, $9398, $a3fb, $b3da, $c33d, $d31c, $e37f, $f35e, $02b1, $1290, $22f3, $32d2, $4235, $5214, $6277, $7256, $b5ea, $a5cb, $95a8, $8589, $f56e, $e54f, $d52c, $c50d, $34e2, $24c3, $14a0, $0481, $7466, $6447, $5424, $4405, $a7db, $b7fa, $8799, $97b8, $e75f, $f77e, $c71d, $d73c, $26d3, $36f2, $0691, $16b0, $6657, $7676, $4615, $5634, $d94c, $c96d, $f90e, $e92f, $99c8, $89e9, $b98a, $a9ab, $5844, $4865, $7806, $6827, $18c0, $08e1, $3882, $28a3, $cb7d, $db5c, $eb3f, $fb1e, $8bf9, $9bd8, $abbb, $bb9a, $4a75, $5a54, $6a37, $7a16, $0af1, $1ad0, $2ab3, $3a92, $fd2e, $ed0f, $dd6c, $cd4d, $bdaa, $ad8b, $9de8, $8dc9, $7c26, $6c07, $5c64, $4c45, $3ca2, $2c83, $1ce0, $0cc1, $ef1f, $ff3e, $cf5d, $df7c, $af9b, $bfba, $8fd9, $9ff8, $6e17, $7e36, $4e55, $5e74, $2e93, $3eb2, $0ed1, $1ef0 ); (* * updcrc derived from article Copyright (C) 1986 Stephen Satchell. * NOTE: First argument must be in range 0 to 255. * Second argument is referenced twice. * * Programmers may incorporate any or all code into their Programs, * giving proper credit within the source. Publication of the * source routines is permitted so long as proper credit is given * to Stephen Satchell, Satchell Evaluations and Chuck Forsberg, * Omen Technology. *) Function UpdCrc(cp: Byte; crc: Word): Word; begin { UpdCrc } UpdCrc := crctab[((crc SHR 8) and 255)] xor (crc SHL 8) xor cp end; end. {Unit}
还有一个CRC32的: unit Crc32; interface uses Windows; const Table: array[0..255] of DWORD = ($00000000, $77073096, $EE0E612C, $990951BA, $076DC419, $706AF48F, $E963A535, $9E6495A3, $0EDB8832, $79DCB8A4, $E0D5E91E, $97D2D988, $09B64C2B, $7EB17CBD, $E7B82D07, $90BF1D91, $1DB71064, $6AB020F2, $F3B97148, $84BE41DE, $1ADAD47D, $6DDDE4EB, $F4D4B551, $83D385C7, $136C9856, $646BA8C0, $FD62F97A, $8A65C9EC, $14015C4F, $63066CD9, $FA0F3D63, $8D080DF5, $3B6E20C8, $4C69105E, $D56041E4, $A2677172, $3C03E4D1, $4B04D447, $D20D85FD, $A50AB56B, $35B5A8FA, $42B2986C, $DBBBC9D6, $ACBCF940, $32D86CE3, $45DF5C75, $DCD60DCF, $ABD13D59, $26D930AC, $51DE003A, $C8D75180, $BFD06116, $21B4F4B5, $56B3C423, $CFBA9599, $B8BDA50F, $2802B89E, $5F058808, $C60CD9B2, $B10BE924, $2F6F7C87, $58684C11, $C1611DAB, $B6662D3D, $76DC4190, $01DB7106, $98D220BC, $EFD5102A, $71B18589, $06B6B51F, $9FBFE4A5, $E8B8D433, $7807C9A2, $0F00F934, $9609A88E, $E10E9818, $7F6A0DBB, $086D3D2D, $91646C97, $E6635C01, $6B6B51F4, $1C6C6162, $856530D8, $F262004E, $6C0695ED, $1B01A57B, $8208F4C1, $F50FC457, $65B0D9C6, $12B7E950, $8BBEB8EA, $FCB9887C, $62DD1DDF, $15DA2D49, $8CD37CF3, $FBD44C65, $4DB26158, $3AB551CE, $A3BC0074, $D4BB30E2, $4ADFA541, $3DD895D7, $A4D1C46D, $D3D6F4FB, $4369E96A, $346ED9FC, $AD678846, $DA60B8D0, $44042D73, $33031DE5, $AA0A4C5F, $DD0D7CC9, $5005713C, $270241AA, $BE0B1010, $C90C2086, $5768B525, $206F85B3, $B966D409, $CE61E49F, $5EDEF90E, $29D9C998, $B0D09822, $C7D7A8B4, $59B33D17, $2EB40D81, $B7BD5C3B, $C0BA6CAD, $EDB88320, $9ABFB3B6, $03B6E20C, $74B1D29A, $EAD54739, $9DD277AF, $04DB2615, $73DC1683, $E3630B12, $94643B84, $0D6D6A3E, $7A6A5AA8, $E40ECF0B, $9309FF9D, $0A00AE27, $7D079EB1, $F00F9344, $8708A3D2, $1E01F268, $6906C2FE, $F762575D, $806567CB, $196C3671, $6E6B06E7, $FED41B76, $89D32BE0, $10DA7A5A, $67DD4ACC, $F9B9DF6F, $8EBEEFF9, $17B7BE43, $60B08ED5, $D6D6A3E8, $A1D1937E, $38D8C2C4, $4FDFF252, $D1BB67F1, $A6BC5767, $3FB506DD, $48B2364B, $D80D2BDA, $AF0A1B4C, $36034AF6, $41047A60, $DF60EFC3, $A867DF55, $316E8EEF, $4669BE79, $CB61B38C, $BC66831A, $256FD2A0, $5268E236, $CC0C7795, $BB0B4703, $220216B9, $5505262F, $C5BA3BBE, $B2BD0B28, $2BB45A92, $5CB36A04, $C2D7FFA7, $B5D0CF31, $2CD99E8B, $5BDEAE1D, $9B64C2B0, $EC63F226, $756AA39C, $026D930A, $9C0906A9, $EB0E363F, $72076785, $05005713, $95BF4A82, $E2B87A14, $7BB12BAE, $0CB61B38, $92D28E9B, $E5D5BE0D, $7CDCEFB7, $0BDBDF21, $86D3D2D4, $F1D4E242, $68DDB3F8, $1FDA836E, $81BE16CD, $F6B9265B, $6FB077E1, $18B74777, $88085AE6, $FF0F6A70, $66063BCA, $11010B5C, $8F659EFF, $F862AE69, $616BFFD3, $166CCF45, $A00AE278, $D70DD2EE, $4E048354, $3903B3C2, $A7672661, $D06016F7, $4969474D, $3E6E77DB, $AED16A4A, $D9D65ADC, $40DF0B66, $37D83BF0, $A9BCAE53, $DEBB9EC5, $47B2CF7F, $30B5FFE9, $BDBDF21C, $CABAC28A, $53B39330, $24B4A3A6, $BAD03605, $CDD70693, $54DE5729, $23D967BF, $B3667A2E, $C4614AB8, $5D681B02, $2A6F2B94, $B40BBE37, $C30C8EA1, $5A05DF1B, $2D02EF8D); procedure CalcCRC32(FileName: string; var CRC32: DWORD); implementation procedure CalcCRC32(FileName: string; var CRC32: DWORD); var F: file; BytesRead: DWORD; Buffer: array[1..65521] of Byte; i: Word; begin FileMode := 0; CRC32 := $ffffffff; {$I-} AssignFile(F, FileName); Reset(F, 1); if IOResult = 0 then begin repeat BlockRead(F, Buffer, SizeOf(Buffer), BytesRead); for i := 1 to BytesRead do CRC32 := (CRC32 shr 8) xor Table[Buffer[i] xor (CRC32 and $000000FF)]; until BytesRead = 0; end; CloseFile(F); {$I+} CRC32 := not CRC32; end; end.
3x..
上面那个是文件校验的。给您个值校验的: Unit CRC32c; Interface Const CRCSeed = $ffffffff; CRC32tab : Array[0..255] of LongInt = ( $00000000, $77073096, $ee0e612c, $990951ba, $076dc419, $706af48f, $e963a535, $9e6495a3, $0edb8832, $79dcb8a4, $e0d5e91e, $97d2d988, $09b64c2b, $7eb17cbd, $e7b82d07, $90bf1d91, $1db71064, $6ab020f2, $f3b97148, $84be41de, $1adad47d, $6ddde4eb, $f4d4b551, $83d385c7, $136c9856, $646ba8c0, $fd62f97a, $8a65c9ec, $14015c4f, $63066cd9, $fa0f3d63, $8d080df5, $3b6e20c8, $4c69105e, $d56041e4, $a2677172, $3c03e4d1, $4b04d447, $d20d85fd, $a50ab56b, $35b5a8fa, $42b2986c, $dbbbc9d6, $acbcf940, $32d86ce3, $45df5c75, $dcd60dcf, $abd13d59, $26d930ac, $51de003a, $c8d75180, $bfd06116, $21b4f4b5, $56b3c423, $cfba9599, $b8bda50f, $2802b89e, $5f058808, $c60cd9b2, $b10be924, $2f6f7c87, $58684c11, $c1611dab, $b6662d3d, $76dc4190, $01db7106, $98d220bc, $efd5102a, $71b18589, $06b6b51f, $9fbfe4a5, $e8b8d433, $7807c9a2, $0f00f934, $9609a88e, $e10e9818, $7f6a0dbb, $086d3d2d, $91646c97, $e6635c01, $6b6b51f4, $1c6c6162, $856530d8, $f262004e, $6c0695ed, $1b01a57b, $8208f4c1, $f50fc457, $65b0d9c6, $12b7e950, $8bbeb8ea, $fcb9887c, $62dd1ddf, $15da2d49, $8cd37cf3, $fbd44c65, $4db26158, $3ab551ce, $a3bc0074, $d4bb30e2, $4adfa541, $3dd895d7, $a4d1c46d, $d3d6f4fb, $4369e96a, $346ed9fc, $ad678846, $da60b8d0, $44042d73, $33031de5, $aa0a4c5f, $dd0d7cc9, $5005713c, $270241aa, $be0b1010, $c90c2086, $5768b525, $206f85b3, $b966d409, $ce61e49f, $5edef90e, $29d9c998, $b0d09822, $c7d7a8b4, $59b33d17, $2eb40d81, $b7bd5c3b, $c0ba6cad, $edb88320, $9abfb3b6, $03b6e20c, $74b1d29a, $ead54739, $9dd277af, $04db2615, $73dc1683, $e3630b12, $94643b84, $0d6d6a3e, $7a6a5aa8, $e40ecf0b, $9309ff9d, $0a00ae27, $7d079eb1, $f00f9344, $8708a3d2, $1e01f268, $6906c2fe, $f762575d, $806567cb, $196c3671, $6e6b06e7, $fed41b76, $89d32be0, $10da7a5a, $67dd4acc, $f9b9df6f, $8ebeeff9, $17b7be43, $60b08ed5, $d6d6a3e8, $a1d1937e, $38d8c2c4, $4fdff252, $d1bb67f1, $a6bc5767, $3fb506dd, $48b2364b, $d80d2bda, $af0a1b4c, $36034af6, $41047a60, $df60efc3, $a867df55, $316e8eef, $4669be79, $cb61b38c, $bc66831a, $256fd2a0, $5268e236, $cc0c7795, $bb0b4703, $220216b9, $5505262f, $c5ba3bbe, $b2bd0b28, $2bb45a92, $5cb36a04, $c2d7ffa7, $b5d0cf31, $2cd99e8b, $5bdeae1d, $9b64c2b0, $ec63f226, $756aa39c, $026d930a, $9c0906a9, $eb0e363f, $72076785, $05005713, $95bf4a82, $e2b87a14, $7bb12bae, $0cb61b38, $92d28e9b, $e5d5be0d, $7cdcefb7, $0bdbdf21, $86d3d2d4, $f1d4e242, $68ddb3f8, $1fda836e, $81be16cd, $f6b9265b, $6fb077e1, $18b74777, $88085ae6, $ff0f6a70, $66063bca, $11010b5c, $8f659eff, $f862ae69, $616bffd3, $166ccf45, $a00ae278, $d70dd2ee, $4e048354, $3903b3c2, $a7672661, $d06016f7, $4969474d, $3e6e77db, $aed16a4a, $d9d65adc, $40df0b66, $37d83bf0, $a9bcae53, $debb9ec5, $47b2cf7f, $30b5ffe9, $bdbdf21c, $cabac28a, $53b39330, $24b4a3a6, $bad03605, $cdd70693, $54de5729, $23d967bf, $b3667a2e, $c4614ab8, $5d681b02, $2a6f2b94, $b40bbe37, $c30c8ea1, $5a05df1b, $2d02ef8d ); Function CRC32(value: Byte; crc: LongInt) : LongInt; Function CRCend( crc : LongInt ) : LongInt ; Implementation Function CRC32(value: Byte; crc: LongInt) : LongInt; begin CRC32 := CRC32tab[Byte(crc xor LongInt(value))] xor ((crc shr 8) and $00ffffff); end; Function CRCend( crc : LongInt ): LongInt; begin CRCend := (crc xor CRCSeed); end; end. { Now to use it... With a LongInt Variable, say vCRC32, first seed it vCRC32 := CRCSeed; Then go Byte-by-Byte thorugh to calculate: For P := 1 to Size DO vCRC32 := CRC32(Bytes[P], vCRC32); Then finish it off With CRCend vCRC32 := CRCend(vCRC32); You should be able to Write your own Dec2Hex Function =) }
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Mark.............:)
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