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DELPHI的一些開發技巧和方法(二)

2007-06-23 04:20:04  編輯來源:互聯網  简体版  手機版  移動版  評論  字體: ||

作者 : toofree

標題 : DELPHI的一些開發技巧和方法(二)

關鍵字: DELPHI 開發技巧

分類 : 開發技巧

密級 : 參賽

(評分:★ , 回複: 3, 閱讀: 1185)

11、向其他應用程序發送模擬鍵:

var

h: Thandle;

begin

h := FindWindow(nil, '應用程序標題');

PostMessage(h, WM_KEYDOWN, VK_F9, 0);//發送F9鍵

end

12、判斷當前網絡連接方式:

(判斷結果爲MODEM、局域網或是代理服務器方式)

uses wininet;

Function ConnectionKind :boolean;

var flags: dword;

begin

Result := InternetGetConnectedState(@flags, 0);

if Result then

begin

if (flags and INTERNET_CONNECTION_MODEM) = INTERNET_CONNECTION_MODEM then

begin

showmessage('Modem');

end;

if (flags and INTERNET_CONNECTION_LAN) = INTERNET_CONNECTION_LAN then

begin

showmessage('LAN');

end;

if (flags and INTERNET_CONNECTION_PROXY) = INTERNET_CONNECTION_PROXY then

begin

showmessage('Proxy');

end;

if (flags and INTERNET_CONNECTION_MODEM_BUSY)=INTERNET_CONNECTION_MODEM_BUSY then

begin

showmessage('Modem Busy');

end;

end;

end;

13、取機器BIOS信息:

with Memo1.Lines do

begin

Add('MainBoardBiosName:'+^I+string(Pchar(Ptr($FE061))));

Add('MainBoardBiosCopyRight:'+^I+string(Pchar(Ptr($FE091))));

Add('MainBoardBiosDate:'+^I+string(Pchar(Ptr($FFFF5))));

Add('MainBoardBiosSerialNo:'+^I+string(Pchar(Ptr($FEC71))));

end;

14、解析服務器IP地址:

uses winsock

function IPAddrToName(IPAddr : String): String;

var

SockAddrIn: TSockAddrIn;

HostEnt: PHostEnt;

WSAData: TWSAData;

begin

WSAStartup($101, WSAData);

SockAddrIn.sin_addr.s_addr:= inet_addr(Pchar(IPAddr));

HostEnt:= gethostbyaddr(@SockAddrIn.sin_addr.S_addr, 4, AF_INET);

if HostEnt<>nil then result:=StrPas(Hostent^.h_name) else result:='';

end;

15、清空一個目錄:

function EmptyDirectory(TheDirectory :String ; Recursive : Boolean) :

Boolean;

var

SearchRec : TSearchRec;

Res : Integer;

begin

Result := False;

TheDirectory := NormalDir(TheDirectory);

Res := FindFirst(TheDirectory + '*.*', faAnyFile, SearchRec);

try

while Res = 0 do

begin

if (SearchRec.Name <> '.') and (SearchRec.Name <> '..') then

begin

if ((SearchRec.Attr and faDirectory) > 0) and Recursive

then begin

EmptyDirectory(TheDirectory + SearchRec.Name, True);

RemoveDirectory(Pchar(TheDirectory + SearchRec.Name));

end

else begin

DeleteFile(Pchar(TheDirectory + SearchRec.Name))

end;

end;

Res := FindNext(SearchRec);

end;

Result := True;

finally

FindClose(SearchRec.FindHandle);

end;

end;

16、計算目錄的大小:

function GetDirectorySize(const Adirectory: string): Integer;

var

Dir: TSearchRec;

Ret: integer;

Path: string;

begin

Result := 0;

Path := ExtractFilePath(Adirectory);

Ret := Sysutils.FindFirst(Adirectory, faAnyFile, Dir);

if Ret <> NO_ERROR then exit;

try

while ret=NO_ERROR do

begin

inc(Result, Dir.Size);

if (Dir.Attr in [faDirectory]) and (Dir.Name[1] <> '.') then

Inc(Result, GetDirectorySize(Path + Dir.Name + '\*.*'));

Ret := Sysutils.FindNext(Dir);

end;

finally

Sysutils.FindClose(Dir);

end;

end;

17、獲得硬盤序列號:

var SerialNum : pdword; a, b : dword; Buffer : array [0..255] of char;

begin

if GetVolumeInformation('c:\', Buffer, SizeOf(Buffer), SerialNum, a, b, nil, 0) then Label1.Caption := IntToStr(SerialNum^);

end;

18、目錄完全刪除:

procedure Tform1.DeleteDirectory(strDir:String);

var

sr: TSearchRec;

FileAttrs: Integer;

strfilename:string;

strPth:string;

begin

strpth:=Getcurrentdir();

FileAttrs := faAnyFile;

if FindFirst(strpth+'\'+strdir+'\*.*', FileAttrs, sr) = 0 then

begin

if (sr.Attr and FileAttrs) = sr.Attr then

begin

strfilename:=sr.Name;

if fileexists(strpth+'\'+strdir+'\'+strfilename) then

deletefile(strpth+'\'+strdir+'\'+strfilename);

end;

while FindNext(sr) = 0 do

begin

if (sr.Attr and FileAttrs) = sr.Attr then

begin

strfilename:=sr.name;

if fileexists(strpth+'\'+strdir+'\'+strfilename) then

deletefile(strpth+'\'+strdir+'\'+strfilename);

end;

end;

FindClose(sr);

removedir(strpth+'\'+strdir);

end;

end;

19、TFileStream的操作:

//從文件流當前位置讀count字節到緩沖區BUFFER

function read(var buffer;count:longint):longint;override;

//將緩沖區BUFFER讀到文件流中

function write(const buffer;count:longint):longint;override;

//設置文件流當前讀寫指針爲OFFSET

function seek(offset:longint;origin:word):longint;override;

origin={soFromBeginning,soFromCurrent,soFromEnd}

//從另一文件流中當前位置複制COUNT到當前文件流當前位置

function copyfrom(source:Tstream;count:longint):longint;

//讀指定文件到文件流

var myFStream:TFileStream;

begin

myFStream:=TFileStream.create(OpenDialog1.filename,fmOpenRead);

end;

20、獲得CPU序列號:

function GetCpuId:longint;assembler;register;

var

temp:longint;

begin

asm

PUSH EBX

PUSH EDI

MOV EDI,EAX

MOV EAX,1

DW $A20F

MOV TEMP,EDX

POP EDI

POP EBX

end;

result:=temp;

end;

procedure TForm1.Button1Click(Sender: Tobject);

begin

label1.Caption:=IntToHex(GetCpuId,8);

end;

2003-5-30 10:47:00

作者 : toofree 標題 : DELPHI的一些開發技巧和方法(二) 關鍵字: DELPHI 開發技巧 分類 : 開發技巧 密級 : 參賽 (評分:★ , 回複: 3, 閱讀: 1185) 11、向其他應用程序發送模擬鍵: var h: Thandle; begin h := FindWindow(nil, '應用程序標題'); PostMessage(h, WM_KEYDOWN, VK_F9, 0);//發送F9鍵 end 12、判斷當前網絡連接方式: (判斷結果爲MODEM、局域網或是代理服務器方式) uses wininet; Function ConnectionKind :boolean; var flags: dword; begin Result := InternetGetConnectedState(@flags, 0); if Result then begin if (flags and INTERNET_CONNECTION_MODEM) = INTERNET_CONNECTION_MODEM then begin showmessage('Modem'); end; if (flags and INTERNET_CONNECTION_LAN) = INTERNET_CONNECTION_LAN then begin showmessage('LAN'); end; if (flags and INTERNET_CONNECTION_PROXY) = INTERNET_CONNECTION_PROXY then begin showmessage('Proxy'); end; if (flags and INTERNET_CONNECTION_MODEM_BUSY)=INTERNET_CONNECTION_MODEM_BUSY then begin showmessage('Modem Busy'); end; end; end; 13、取機器BIOS信息: with Memo1.Lines do begin Add('MainBoardBiosName:'+^I+string(Pchar(Ptr($FE061)))); Add('MainBoardBiosCopyRight:'+^I+string(Pchar(Ptr($FE091)))); Add('MainBoardBiosDate:'+^I+string(Pchar(Ptr($FFFF5)))); Add('MainBoardBiosSerialNo:'+^I+string(Pchar(Ptr($FEC71)))); end; 14、解析服務器IP地址: uses winsock function IPAddrToName(IPAddr : String): String; var SockAddrIn: TSockAddrIn; HostEnt: PHostEnt; WSAData: TWSAData; begin WSAStartup($101, WSAData); SockAddrIn.sin_addr.s_addr:= inet_addr(Pchar(IPAddr)); HostEnt:= gethostbyaddr(@SockAddrIn.sin_addr.S_addr, 4, AF_INET); if HostEnt<>nil then result:=StrPas(Hostent^.h_name) else result:=''; end; 15、清空一個目錄: function EmptyDirectory(TheDirectory :String ; Recursive : Boolean) : Boolean; var SearchRec : TSearchRec; Res : Integer; begin Result := False; TheDirectory := NormalDir(TheDirectory); Res := FindFirst(TheDirectory + '*.*', faAnyFile, SearchRec); try while Res = 0 do begin if (SearchRec.Name <> '.') and (SearchRec.Name <> '..') then begin if ((SearchRec.Attr and faDirectory) > 0) and Recursive then begin EmptyDirectory(TheDirectory + SearchRec.Name, True); RemoveDirectory(Pchar(TheDirectory + SearchRec.Name)); end else begin DeleteFile(Pchar(TheDirectory + SearchRec.Name)) end; end; Res := FindNext(SearchRec); end; Result := True; finally FindClose(SearchRec.FindHandle); end; end; 16、計算目錄的大小: function GetDirectorySize(const Adirectory: string): Integer; var Dir: TSearchRec; Ret: integer; Path: string; begin Result := 0; Path := ExtractFilePath(Adirectory); Ret := Sysutils.FindFirst(Adirectory, faAnyFile, Dir); if Ret <> NO_ERROR then exit; try while ret=NO_ERROR do begin inc(Result, Dir.Size); if (Dir.Attr in [faDirectory]) and (Dir.Name[1] <> '.') then Inc(Result, GetDirectorySize(Path + Dir.Name + '\*.*')); Ret := Sysutils.FindNext(Dir); end; finally Sysutils.FindClose(Dir); end; end; 17、獲得硬盤序列號: var SerialNum : pdword; a, b : dword; Buffer : array [0..255] of char; begin if GetVolumeInformation('c:\', Buffer, SizeOf(Buffer), SerialNum, a, b, nil, 0) then Label1.Caption := IntToStr(SerialNum^); end; 18、目錄完全刪除: procedure Tform1.DeleteDirectory(strDir:String); var sr: TSearchRec; FileAttrs: Integer; strfilename:string; strPth:string; begin strpth:=Getcurrentdir(); FileAttrs := faAnyFile; if FindFirst(strpth+'\'+strdir+'\*.*', FileAttrs, sr) = 0 then begin if (sr.Attr and FileAttrs) = sr.Attr then begin strfilename:=sr.Name; if fileexists(strpth+'\'+strdir+'\'+strfilename) then deletefile(strpth+'\'+strdir+'\'+strfilename); end; while FindNext(sr) = 0 do begin if (sr.Attr and FileAttrs) = sr.Attr then begin strfilename:=sr.name; if fileexists(strpth+'\'+strdir+'\'+strfilename) then deletefile(strpth+'\'+strdir+'\'+strfilename); end; end; FindClose(sr); removedir(strpth+'\'+strdir); end; end; 19、TFileStream的操作: //從文件流當前位置讀count字節到緩沖區BUFFER function read(var buffer;count:longint):longint;override; //將緩沖區BUFFER讀到文件流中 function write(const buffer;count:longint):longint;override; //設置文件流當前讀寫指針爲OFFSET function seek(offset:longint;origin:word):longint;override; origin={soFromBeginning,soFromCurrent,soFromEnd} //從另一文件流中當前位置複制COUNT到當前文件流當前位置 function copyfrom(source:Tstream;count:longint):longint; //讀指定文件到文件流 var myFStream:TFileStream; begin myFStream:=TFileStream.create(OpenDialog1.filename,fmOpenRead); end; 20、獲得CPU序列號: function GetCpuId:longint;assembler;register; var temp:longint; begin asm PUSH EBX PUSH EDI MOV EDI,EAX MOV EAX,1 DW $A20F MOV TEMP,EDX POP EDI POP EBX end; result:=temp; end; procedure TForm1.Button1Click(Sender: Tobject); begin label1.Caption:=IntToHex(GetCpuId,8); end; 2003-5-30 10:47:00
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