有没有类似delphi函数参数array of const的声明

3396520 2003-09-27 10:16:11

delphi中可声明如下函数
function test(s: array of const)
调用方式可能如下test([9, '6'])；test([9])； test([9, '6'， ‘硕'])
我想在.net中想实现类似的功能的函数，
请问该怎么做

...全文

135 2 打赏收藏转发到动态举报

写回复

用AI写文章

2 条回复

切换为时间正序

请发表友善的回复…

发表回复

sndy77 2004-01-14

打赏
举报

arrayList ,HashTable

mxk19791116 2003-09-28

打赏
举报

delphi中的Format格式化和相关函数详解 function Format(const Format: string; const Args: array of const): string; $[SysUtils.pas 功能：返回按指定方式格式化一个数组常量的字符形式说明这个函数是Delphi中用得最多的函数，现在就列举几个例子以得到直观的理解 "%" [索引 ":"] ["-"] [宽度] ["." 摘要] 类型它是以"%"开始,而以"类型"结束，"类型"表示一个具体的类型。中间是用来格式化"类型"的指令字符，是可选的。总结一下Format的用法:

Delphi读取硬盘驱动器序列号的源代码范例，一个读取硬盘驱动器序列号的功能的 DLL Delphi 调用端. 一个简单的查看硬盘驱动器信息。还有一个导出函数读取硬盘序列号。相关代码参考如下：　　const 　　 PDLL = 'HardDriveNumber.dll'; 　　type 　　THardDriveNumber = record 　　 SerialNumber: array[0..128-1] of AnsiChar; 　　 ModelNumber: array[0..128-1] of AnsiChar; 　　end; 　　PHardDriveNumber = ^THardDriveNumber; 　　procedure GetHardDriveNumber(var hdNumber: THardDriveNumber); stdcall; external PDLL Name 'GetHardDriveNumber@4'; 　　procedure ShowHardDriveNumber(hWndParent: HWND);stdcall; external PDLL Name 'ShowHardDriveNumber@4'; 　　implementation 　　end.

内联函数（Inlining） D7中的inline关键字作为保留字并不会对编译器产生实际作用，在2009中此关键字起到内嵌到代码中起到实际作用。语法如下： function foo: Integer; inline; 内部函数/过程也可以使用，但在D2009测试版中，类方法的内部函数使用inline后不认Self指针；类的子过程/子函数，也可以使用inline关键字，但没有实际效果，且虚方法/继承方法（virtual/override）不能使用。重载运算符（Operator Overloading）可以重载部分运算符，如+、-、类型转换等，在D2006只支持到record，但从2007开始支持到Class，以下示例修改自官网： TMyClass = class // Addition of two operands of type TMyClass class operator Add(a, b: TMyClass): TMyClass; // Subtraction of type TMyClass class operator Subtract(a, b: TMyClass): TMyclass; // Implicit conversion of an Integer to type TMyClass class operator Implicit(a: Integer): TMyClass; // Implicit conversion of TMyClass to Integer class operator Implicit(a: TMyClass): Integer; // Explicit conversion of a Double to TMyClass class operator Explicit(a: Double): TMyClass; end; class operator TMyClass.Add(a, b: TMyClass): TMyClass; begin //... end; var x, y: TMyClass begin x := 12; // Implicit conversion from an Integer y := x + x; // Calls TMyClass.Add(a, b: TMyClass): TMyClass end; 类助手（Class Helpers） Helper是对原Class的扩展，是我们在不修改原类的基础上增加类方法，并加入原类的空间中。在Delphi中，对对象的调用实际上采用了两个步骤，首先是把对象地址放入eax寄存器中，然后call类方法，所以如果不使用继承类增加数据的话，用父类调用继承类的方法是没问题的，所以其实这样的方法在D7中也可以使用，但却很麻烦。所以Class Helper起到的就是这个作用，在Class Helper中可以增加的就是与实例无关的内容，所以任何需要增加实例Size的活VMT的功能不能声明，例如变量、虚方法等，但只占用类空间的没关系，如class var。在应用上我们可以通过这种方法方便的给VCL一类控件加上某个属性。 TFoo = class helper for TControl private function GetA: Integer; public class var X: Integer; procedure MSG(var Message: TMessage); message WM_MYMESSAGE; procedure ProcFoo; property A: Integer read GetA; end; // ... procedure TForm1.Foofoo; begin ProcFoo; // TControl -> TWinControl -> TScrollingWinControl-> TCustomForm -> TForm -> TFrom1: Call TFoo.ProcFoo end; strict关键字（Keyword “strict”）众所周知，在Delphi中，类的private和protected域中的变量可以被同一单元中可以自由的被访问（Delphi的类没有“友元”的概念，但同一个unit中可以说自动友元化了），而并非是真正的私有或只能被继承类访问。而strict关键字的作用就是使该内容变成严格OO意义上的private/protected作用域，这点没有什么多说的。语法： strict private // Blah... strict protected // Blah... 结构方法（Records with Methods）也没什么特别的，就是和class差不多，就一个不用创建和销毁、不能继承、没有作用域之类的类，很容易掌握，所以这里就不多介绍了。但是很有意思的是带参数的constructor可以通过编译，可能是为了初始化的方便吧。抽象类和固实类（Abstract and Sealed Classes）这两个概念在OO中也并不陌生，抽象类是不应该创建实例的（但D2006起的编译器就不给检查，连个Warning都没有，这还有啥用啊 -.- ），而固实类是不能被继承的。语法： TAnAbstractClass = class abstract // or (TParentClass) // Blah... end; TASealedClass = class sealed(TAnAbstractClass) // or empty // Blah... end; 类常量、类变量、类属性与静态类方法（Class const/var/property and Static Class Methods）老的Delphi中只提供了类方法，而没有提供类变量、类常量和类属性，这真的是很不方便。这里先区分一下我所使用的类（Class）和对象（Object）即类的实例（Instance of Class）。当在Delphi中声明一个类的时候，这个类是有实际地址的，该地址记录了许多类的相关信息，比如实例的Size啊、虚方法信息啊一堆东西，而创建一个对象的时候则把类实例化，在堆（Heap）中分配一块地址，包括内部数据和VMT之类的东西。在调用实例的时候，首先要知道对象地址，然后才能访问内部变量和调用方法时使用Self指针即实例地址；而在调用类方法的时候，eax中的并不是实例的地址而是类的地址，然后再call方法，这时的Self指针并非实例地址而是类地址。所以对于每一个类和继承类来说，包括它和它的继承类的所有实例，类变量、常量都是同一个，这样就存在了一个唯一的可供使用的变量或常量，方便同步并且不需要使用较多的内存（可以参考C#中的类，不过C#中不允许从实例直接访问类变量、常量、方法）。而静态类方法则是在使用这个类方法的时候不传入class地址，也就是说没有Self指针，这样的类方法的访问开销要小于普通的类方法；这自然也就意味着，该类方法不能被继承（不能virtual/override）。另外，类属性的get/set方法必须使用静态类方法。 TFooClass = class private class procedure SetFoo(const Value: Integer); static; // A Static Class Method protected class var FX : Integer; // class var public const FC: Integer = 10; // class const class procedure VirtualProc; virtual; class property X: Integer read FX write FX; // class property class property Foo: Integer read FC write SetFoo; end; 类内部类型与嵌套类（Class Types and Nested Classes）可以说现在的Class的域几乎相当于原来的整个unit，以前不能放里面的元素现在都可以放里面了，这个也没什么好多说的，试验一下就很容易明白了。终方法（Final Methods）这个也是建立在虚方法的基础上的，在override后使用final关键字，则表示该虚方法不能再被子类继承下去了。 TAClass = class public procedure Foo; virtual; end; TFinalMethodClass = class(TAClass) public procedure Test; override; final; // A Final Method end; For-in循环（For-in Loop）这个应该是受.Net影响吧，支持遍历一个数组或提供了GetEnumerator函数的类。GetEnumerator要求返回一个类的实例，该类包含有Current属性和MoveNext方法。 procedure Foo(List: TStrings); i : Integer; lst : array[0..100]of Integer; s : string; begin for i in lst do ; for s in List do ; // Support of TStrings.GetEnumerator end;

最近做一个接口，与JAVA的关于DES/CBC/PKCS5Padding 互相解密。在网上找了很多资料，摸索了3天才摸索出来。同样的明文，用JAVA加密的密文死活都跟用DELPHI加密的不相等，有时候少于8个字符的就正常，多了8个字符的就有问题，原来是有个7把7改成8就可以了。害人啊，， function EncryDes(const str:string;const keystr:string;const ivstr:string):string ; var key:tkey64; Context:TDESContext; Block,iv:TDESBlock; i,j,len,posnum:smallint; poschar,xx:char; xuhuan:integer; begin for i:=0 to 7 do begin if i > (length(keystr)-1) then key[i] :=0 else key[i] := byte(keystr[i+1]); end; for i:=0 to 7 do begin if i > (length(ivstr)-1) then iv[i]:=0 else iv[i] := byte(ivstr[i+1]); end; InitEncryptDES(Key, Context, true); len := length(AnsiString(str)); xx:= char( 8- (len mod 8)); if len<=8 then xuhuan:=0 else xuhuan:=round(len/8); for i:=0 to xuhuan do begin for j:=0 to 7 do begin if ((i*8+j+1)<=len) then //关键这一步，网上好多参考资料都是((i*7+j+1)<=len)，而不是((i*8+j+1)<=len) 害人啊，害得我摸索了3天，，哎 begin poschar:=str[i*8+j+1]; block[j]:=byte(poschar); end else block[j]:=byte(xx); end; EncryptDESCBC(Context, IV, Block); for j:= 0 to 7 do begin posnum:=block[j]; result := result + inttohex(posnum,2); end; iv:=block; end; end; //完整代码如下 unit dmdes; {*********************************************************} {* DELPHI、PHP、C#通用DES编码解码单元 *} {* 由TurboPower LockBox部分代码改写 *} {* 滕州市东鸣软件工作室制作 ZWF 2011-12-27 *} {*********************************************************} {EncryDes为编码函数，DecryDes为解码函数，keystr为密码，ivstr为偏移量，一般设置keystr，ivstr相同，内容为八位字节长度的字符串,编码结果为十六进制字串} interface uses Windows,SysUtils; type PKey64 = ^TKey64; TKey64 = array [0..7] of Byte; type TDESBlock = array[0..7] of Byte; TDESContext = packed record TransformedKey : array [0..31] of LongInt; Encrypt : Boolean; end; function EncryDes(const str:string;const keystr:string;const ivstr:string):string ; function DecryDes(const str:string;const keystr:string;const ivstr:string):string ; function DecryDessec(const str:string;const keystr:string;const ivstr:string):string ; implementation procedure XorMemPrim(var Mem1; const Mem2; Count : Cardinal); register; asm push esi push edi mov esi, eax //esi = Mem1 mov edi, edx //edi = Mem2 push ecx //save byte count shr ecx, 2 //convert to dwords jz @Continue cld @Loop1: //xor dwords at a time mov eax, [edi] xor [esi], eax add esi, 4 add edi, 4 dec ecx jnz @Loop1 @Continue: //handle remaining bytes (3 or less) pop ecx and ecx, 3 jz @Done @Loop2: //xor remaining bytes mov al, [edi] xor [esi], al inc esi inc edi dec ecx jnz @Loop2 @Done: pop edi pop esi end; { -------------------------------------------------------------------------- } procedure XorMem(var Mem1; const Mem2; Count : Cardinal); begin XorMemPrim(Mem1, Mem2, Count); end; { -------------------------------------------------------------------------- } procedure EncryptDES(const Context : TDESContext; var Block : TDESBlock); const SPBox : array [0..7, 0..63] of DWord = (($01010400, $00000000, $00010000, $01010404, $01010004, $00010404, $00000004, $00010000, $00000400, $01010400, $01010404, $00000400, $01000404, $01010004, $01000000, $00000004, $00000404, $01000400, $01000400, $00010400, $00010400, $01010000, $01010000, $01000404, $00010004, $01000004, $01000004, $00010004, $00000000, $00000404, $00010404, $01000000, $00010000, $01010404, $00000004, $01010000, $01010400, $01000000, $01000000, $00000400, $01010004, $00010000, $00010400, $01000004, $00000400, $00000004, $01000404, $00010404, $01010404, $00010004, $01010000, $01000404, $01000004, $00000404, $00010404, $01010400, $00000404, $01000400, $01000400, $00000000, $00010004, $00010400, $00000000, $01010004), ($80108020, $80008000, $00008000, $00108020, $00100000, $00000020, $80100020, $80008020, $80000020, $80108020, $80108000, $80000000, $80008000, $00100000, $00000020, $80100020, $00108000, $00100020, $80008020, $00000000, $80000000, $00008000, $00108020, $80100000, $00100020, $80000020, $00000000, $00108000, $00008020, $80108000, $80100000, $00008020, $00000000, $00108020, $80100020, $00100000, $80008020, $80100000, $80108000, $00008000, $80100000, $80008000, $00000020, $80108020, $00108020, $00000020, $00008000, $80000000, $00008020, $80108000, $00100000, $80000020, $00100020, $80008020, $80000020, $00100020, $00108000, $00000000, $80008000, $00008020, $80000000, $80100020, $80108020, $00108000), ($00000208, $08020200, $00000000, $08020008, $08000200, $00000000, $00020208, $08000200, $00020008, $08000008, $08000008, $00020000, $08020208, $00020008, $08020000, $00000208, $08000000, $00000008, $08020200, $00000200, $00020200, $08020000, $08020008, $00020208, $08000208, $00020200, $00020000, $08000208, $00000008, $08020208, $00000200, $08000000, $08020200, $08000000, $00020008, $00000208, $00020000, $08020200, $08000200, $00000000, $00000200, $00020008, $08020208, $08000200, $08000008, $00000200, $00000000, $08020008, $08000208, $00020000, $08000000, $08020208, $00000008, $00020208, $00020200, $08000008, $08020000, $08000208, $00000208, $08020000, $00020208, $00000008, $08020008, $00020200), ($00802001, $00002081, $00002081, $00000080, $00802080, $00800081, $00800001, $00002001, $00000000, $00802000, $00802000, $00802081, $00000081, $00000000, $00800080, $00800001, $00000001, $00002000, $00800000, $00802001, $00000080, $00800000, $00002001, $00002080, $00800081, $00000001, $00002080, $00800080, $00002000, $00802080, $00802081, $00000081, $00800080, $00800001, $00802000, $00802081, $00000081, $00000000, $00000000, $00802000, $00002080, $00800080, $00800081, $00000001, $00802001, $00002081, $00002081, $00000080, $00802081, $00000081, $00000001, $00002000, $00800001, $00002001, $00802080, $00800081, $00002001, $00002080, $00800000, $00802001, $00000080, $00800000, $00002000, $00802080), ($00000100, $02080100, $02080000, $42000100, $00080000, $00000100, $40000000, $02080000, $40080100, $00080000, $02000100, $40080100, $42000100, $42080000, $00080100, $40000000, $02000000, $40080000, $40080000, $00000000, $40000100, $42080100, $42080100, $02000100, $42080000, $40000100, $00000000, $42000000, $02080100, $02000000, $42000000, $00080100, $00080000, $42000100, $00000100, $02000000, $40000000, $02080000, $42000100, $40080100, $02000100, $40000000, $42080000, $02080100, $40080100, $00000100, $02000000, $42080000, $42080100, $00080100, $42000000, $42080100, $02080000, $00000000, $40080000, $42000000, $00080100, $02000100, $40000100, $00080000, $00000000, $40080000, $02080100, $40000100), ($20000010, $20400000, $00004000, $20404010, $20400000, $00000010, $20404010, $00400000, $20004000, $00404010, $00400000, $20000010, $00400010, $20004000, $20000000, $00004010, $00000000, $00400010, $20004010, $00004000, $00404000, $20004010, $00000010, $20400010, $20400010, $00000000, $00404010, $20404000, $00004010, $00404000, $20404000, $20000000, $20004000, $00000010, $20400010, $00404000, $20404010, $00400000, $00004010, $20000010, $00400000, $20004000, $20000000, $00004010, $20000010, $20404010, $00404000, $20400000, $00404010, $20404000, $00000000, $20400010, $00000010, $00004000, $20400000, $00404010, $00004000, $00400010, $20004010, $00000000, $20404000, $20000000, $00400010, $20004010), ($00200000, $04200002, $04000802, $00000000, $00000800, $04000802, $00200802, $04200800, $04200802, $00200000, $00000000, $04000002, $00000002, $04000000, $04200002, $00000802, $04000800, $00200802, $00200002, $04000800, $04000002, $04200000, $04200800, $00200002, $04200000, $00000800, $00000802, $04200802, $00200800, $00000002, $04000000, $00200800, $04000000, $00200800, $00200000, $04000802, $04000802, $04200002, $04200002, $00000002, $00200002, $04000000, $04000800, $00200000, $04200800, $00000802, $00200802, $04200800, $00000802, $04000002, $04200802, $04200000, $00200800, $00000000, $00000002, $04200802, $00000000, $00200802, $04200000, $00000800, $04000002, $04000800, $00000800, $00200002), ($10001040, $00001000, $00040000, $10041040, $10000000, $10001040, $00000040, $10000000, $00040040, $10040000, $10041040, $00041000, $10041000, $00041040, $00001000, $00000040, $10040000, $10000040, $10001000, $00001040, $00041000, $00040040, $10040040, $10041000, $00001040, $00000000, $00000000, $10040040, $10000040, $10001000, $00041040, $00040000, $00041040, $00040000, $10041000, $00001000, $00000040, $10040040, $00001000, $00041040, $10001000, $00000040, $10000040, $10040000, $10040040, $10000000, $00040000, $10001040, $00000000, $10041040, $00040040, $10000040, $10040000, $10001000, $10001040, $00000000, $10041040, $00041000, $00041000, $00001040, $00001040, $00040040, $10000000, $10041000)); var I, L, R, Work : DWord; CPtr : PDWord; procedure SplitBlock(const Block : TDESBlock; var L, R : DWord); register; asm push ebx push eax mov eax, [eax] mov bh, al mov bl, ah rol ebx, 16 shr eax, 16 mov bh, al mov bl, ah mov [edx], ebx pop eax mov eax, [eax+4] mov bh, al mov bl, ah rol ebx, 16 shr eax, 16 mov bh, al mov bl, ah mov [ecx], ebx pop ebx end; procedure JoinBlock(const L, R : LongInt; var Block : TDESBlock); register; asm push ebx mov bh, al mov bl, ah rol ebx, 16 shr eax, 16 mov bh, al mov bl, ah mov [ecx+4], ebx mov bh, dl mov bl, dh rol ebx, 16 shr edx, 16 mov bh, dl mov bl, dh mov [ecx], ebx pop ebx end; procedure IPerm(var L, R : DWord); var Work : DWord; begin Work := ((L shr 4) xor R) and $0F0F0F0F; R := R xor Work; L := L xor Work shl 4; Work := ((L shr 16) xor R) and $0000FFFF; R := R xor Work; L := L xor Work shl 16; Work := ((R shr 2) xor L) and $33333333; L := L xor Work; R := R xor Work shl 2; Work := ((R shr 8) xor L) and $00FF00FF; L := L xor Work; R := R xor Work shl 8; R := (R shl 1) or (R shr 31); Work := (L xor R) and $AAAAAAAA; L := L xor Work; R := R xor Work; L := (L shl 1) or (L shr 31); end; procedure FPerm(var L, R : DWord); var Work : DWord; begin L := L; R := (R shl 31) or (R shr 1); Work := (L xor R) and $AAAAAAAA; L := L xor Work; R := R xor Work; L := (L shr 1) or (L shl 31); Work := ((L shr 8) xor R) and $00FF00FF; R := R xor Work; L := L xor Work shl 8; Work := ((L shr 2) xor R) and $33333333; R := R xor Work; L := L xor Work shl 2; Work := ((R shr 16) xor L) and $0000FFFF; L := L xor Work; R := R xor Work shl 16; Work := ((R shr 4) xor L) and $0F0F0F0F; L := L xor Work; R := R xor Work shl 4; end; begin SplitBlock(Block, L, R); IPerm(L, R); CPtr := @Context; for I := 0 to 7 do begin Work := (((R shr 4) or (R shl 28)) xor CPtr^); Inc(CPtr); L := L xor SPBox[6, Work and $3F]; L := L xor SPBox[4, Work shr 8 and $3F]; L := L xor SPBox[2, Work shr 16 and $3F]; L := L xor SPBox[0, Work shr 24 and $3F]; Work := (R xor CPtr^); Inc(CPtr); L := L xor SPBox[7, Work and $3F]; L := L xor SPBox[5, Work shr 8 and $3F]; L := L xor SPBox[3, Work shr 16 and $3F]; L := L xor SPBox[1, Work shr 24 and $3F]; Work := (((L shr 4) or (L shl 28)) xor CPtr^); Inc(CPtr); R := R xor SPBox[6, Work and $3F]; R := R xor SPBox[4, Work shr 8 and $3F]; R := R xor SPBox[2, Work shr 16 and $3F]; R := R xor SPBox[0, Work shr 24 and $3F]; Work := (L xor CPtr^); Inc(CPtr); R := R xor SPBox[7, Work and $3F]; R := R xor SPBox[5, Work shr 8 and $3F]; R := R xor SPBox[3, Work shr 16 and $3F]; R := R xor SPBox[1, Work shr 24 and $3F]; end; FPerm(L, R); JoinBlock(L, R, Block); end; procedure InitEncryptDES(const Key : TKey64; var Context : TDESContext; Encrypt : Boolean); const PC1 : array [0..55] of Byte = (56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3); PC2 : array [0..47] of Byte = (13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9, 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1, 40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47, 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31); CTotRot : array [0..15] of Byte = (1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28); CBitMask : array [0..7] of Byte = (128, 64, 32, 16, 8, 4, 2, 1); var PC1M : array [0..55] of Byte; PC1R : array [0..55] of Byte; KS : array [0..7] of Byte; I, J, L, M : LongInt; begin {convert PC1 to bits of key} for J := 0 to 55 do begin L := PC1[J]; M := L mod 8; PC1M[J] := Ord((Key[L div 8] and CBitMask[M]) 0); end; {key chunk for each iteration} for I := 0 to 15 do begin {rotate PC1 the right amount} for J := 0 to 27 do begin L := J + CTotRot[I]; if (L (length(keystr)-1) then key[i] :=0 else key[i] := byte(keystr[i+1]); end; for i:=0 to 7 do begin if i > (length(ivstr)-1) then iv[i]:=0 else iv[i] := byte(ivstr[i+1]); end; InitEncryptDES(Key, Context, true); len := length(AnsiString(str)); xx:= char( 8- (len mod 8)); if len<=8 then xuhuan:=0 else xuhuan:=round(len/8); for i:=0 to xuhuan do begin for j:=0 to 7 do begin if ((i*8+j+1) (length(temp)-1) then key[i] :=0 else key[i] := byte(temp[i+1]); end; temp := ivstr; for i:=0 to 7 do begin if i > (length(temp)-1) then iv[i] := 0 else iv[i] := byte(temp[i+1]); end; InitEncryptDES(Key, Context, False); temp := str; posnum := 0; for i:=0 to length(temp)-1 do begin Block[posnum] := byte(temp[i+1]); posnum := posnum+1; if posnum = 8 then begin bak := block; EncryptDESCBC(Context, IV, Block); for j:= 0 to 7 do begin // temp := temp+inttostr(byte(block[i]))+' '; res := res + char(block[j]); end; iv := bak; posnum := 0; end; end; if posnum 0 then begin // end else begin temp:=''; for i:= 1 to length(res) do begin temp := temp+char(res[i]); end; Result:= trim(temp); end; end; function DecryDes(const str:string;const keystr:string;const ivstr:string):string ; var key:tkey64; Context:TDESContext; bak,Block,iv:TDESBlock; i,j,len,posnum:smallint; poschar,xx:char; res,lss:string; begin for i:=0 to 7 do begin if i > (length(keystr)-1) then key[i] :=0 else key[i] := byte(keystr[i+1]); end; for i:=0 to 15 do begin if i > (length(ivstr)-1) then iv[i]:=0 else iv[i] := byte(ivstr[i+1]); end; InitEncryptDES(Key, Context, false); res:=''; for j:= 0 to (length(str) div 2)-1 do begin lss:=copy(str,j*2+1,2); res:=res+ char(StrToInt('$'+lss)) ; end; len := length(AnsiString(res)); for i:=0 to round(len/8)-1 do begin for j:=0 to 7 do begin if ((i*7+j+1)<=len) then begin poschar:=res[i*8+j+1]; block[j]:=byte(poschar); end else begin block[j]:=byte(xx); end; end; bak:=block; EncryptDESCBC(Context, IV, Block); for j:= 0 to 7 do begin result := result + char(block[j]); end; iv:=bak; end; end; end.

◇[DELPHI]执行程序外文件 WINEXEC//调用可执行文件 winexec('command.com /c copy *.* c:\',SW_Normal); winexec('start abc.txt'); ShellExecute或ShellExecuteEx//启动文件关联程序 function executefile(const filename,params,defaultDir:string;showCmd:integer):THandle; ExecuteFile('C:\abc\a.txt','x.abc','c:\abc\',0); ExecuteFile('http://tingweb.yeah.net','','',0); ExecuteFile('mailto:tingweb@wx88.net','','',0); ◇[DELPHI]取得系统运行的进程名 var hCurrentWindow:HWnd;szText:array[0..254] of char; begin hCurrentWindow:=Getwindow(handle,GW_HWndFrist); while hCurrentWindow <> 0 do begin if Getwindowtext(hcurrnetwindow,@sztext,255)>0 then listbox1.items.add(strpas(@sztext)); hCurrentWindow:=Getwindow(hCurrentwindow,GW_HWndNext); end; end; ◇[DELPHI]关于汇编的嵌入 Asm End; 可以任意修改EAX、ECX、EDX；不能修改ESI、EDI、ESP、EBP、EBX。 ◇[DELPHI]关于类型转换函数 FloatToStr//浮点转字符串 FloatToStrF//带格式的浮点转字符串 IntToHex//整数转16进制 TimeToStr DateToStr DateTimeToStr FmtStr//按指定格式输出字符串 FormatDateTime('YYYY-MM-DD,hh-mm-ss',DATE);

Delphi

5,386

社区成员

262,729

社区内容

发帖

与我相关

我的任务

社区管理员

加入社区

近7日
近30日
至今

加载中

查看更多榜单

社区公告

暂无公告

试试用AI创作助手写篇文章吧

+ 用AI写文章