◇[DELPHI]網絡鄰居復制文件
uses shellapi;
copyfile(pchar('newfile.txt'),pchar('//computername/direction/targer.txt'),false);

◇[DELPHI]產生鼠標拖動效果
通過MouseMove事件、DragOver事件、EndDrag事件實現，例如在PANEL上的LABEL：
var xpanel,ypanel,xlabel,ylabel:integer;
PANEL的MouseMove事件：xpanel:=x;ypanel:=y;
PANEL的DragOver事件：xpanel:=x;ypanel:=y;
LABEL的MouseMove事件：xlabel:=x;ylabel:=y;
LABEL的EndDrag事件：label.left:=xpanel-xlabel;label.top:=ypanel-ylabel;

◇[DELPHI]取得WINDOWS目錄
uses shellapi;
var windir:array[0..255] of char;
getwindowsdirectory(windir,sizeof(windir));
或者從注冊表中讀取，位置：
HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion
SystemRoot鍵，取得如：C:/WINDOWS

◇[DELPHI]在form或其他容器上畫線
var x,y:array [0..50] of integer;
canvas.pen.color:=clred;
canvas.pen.style:=PSDash;
form1.canvas.moveto(trunc(x[i]),trunc(y[i]));
form1.canvas.lineto(trunc(x[j]),trunc(y[j]));

◇[DELPHI]字符串列表使用
var ttips.insert(1,'insert string at NO 2 line');
tips.savetofile('newfile.txt');
tips.free;

◇[DELPHI]簡單的剪貼板操作
richedit1.selectall;
richedit1.copytoclipboard;
richedit1.cuttoclipboard;
edit1.pastefromclipboard;

◇[DELPHI]關于文件、目錄操作
Chdir('c:/abcdir');轉到目錄
Mkdir('dirname');建立目錄
Rmdir('dirname');刪除目錄
GetCurrentDir;//取當前目錄名，無'/'
Getdir(0,s);//取工作目錄名s:='c:/abcdir';
Deletfile('abc.txt');//刪除文件
Renamefile('old.txt','new.txt');//文件更名
ExtractFilename(filelistbox1.filename);//取文件名
ExtractFileExt(filelistbox1.filename);//取文件后綴

◇[DELPHI]處理文件屬性
attr:=filegetattr(filelistbox1.filename);
if (attr and faReadonly)=faReadonly then ... //只讀
if (attr and faSysfile)=faSysfile then ... //系統
if (attr and faArchive)=faArchive then ... //存檔
if (attr and faHidden)=faHidden then ... //隱藏

◇[DELPHI]執行程序外文件
WINEXEC//調用可執行文件
winexec('command.com /c copy *.* c:/',SW_Normal);
winexec('start abc.txt');
ShellExecute或ShellExecuteEx//啟動文件關聯程序
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:[email protected]','','',0);

◇[DELPHI]取得系統運行的進程名
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]關于匯編的嵌入
Asm End;
可以任意修改EAX、ECX、EDX；不能修改ESI、EDI、ESP、EBP、EBX。

◇[DELPHI]關于類型轉換函數
FloatToStr//浮點轉字符串
FloatToStrF//帶格式的浮點轉字符串
IntToHex//整數轉16進制
TimeToStr
DateToStr
DateTimeToStr
FmtStr//按指定格式輸出字符串
formatDateTime('YYYY-MM-DD,hh-mm-ss',DATE);

◇[DELPHI]字符串的過程和函數
Insert(obj,target,pos);//字符串target插入在pos的位置。如插入結果大于target最大長度，多出字符將被截掉。如Pos在255以外，會產生運行錯。例如，st:='Brian'，則Insert（'OK',st,2）會使st變為'BrOKian'。
Delete(st,pos,Num);//從st串中的pos（整型）位置開始刪去個數為Num（整型）個字符的子字串。例如，st:='Brian'，則Delete(st,3,2)將變為Brn。
Str(value,st);//將數值value（整型或實型）轉換成字符串放在st中。例如，a=2.5E4時，則str(a:10,st)將使st的值為' 25000'。
Val(st,var,code);//把字符串表達式st轉換為對應整型或實型數值，存放在var中。St必須是一個表示數值的字符串，并符合數值常數的規則。在轉換過程中，如果沒有檢測出錯誤，變量code置為0，否則置為第一個出錯字符的位置。例如，st:=25.4E3,x是一個實型變量，則val(st,x,code)將使X值為25400，code值為0。
Copy(st.pos.num);//返回st串中一個位置pos（整型）處開始的，含有num（整型）個字符的子串。如果pos大于st字符串的長度，那就會返回一個空串，如果pos在255以外，會引起運行錯誤。例如，st:='Brian'，則Copy(st,2,2)返回'ri'。
Concat(st1,st2,st3……,stn);//把所有自變量表示出的字符串按所給出的順序連接起來，并返回連接后的值。如果結果的長度255，將產生運行錯誤。例如，st1:='Brian',st2:=' ',st3:='Wilfred'，則Concat(st1,st2,st3)返回'Brian Wilfred'。
Length(st);//返回字符串表達式st的長度。例如，st:='Brian'，則Length(st)返回值為5。
Pos(obj,target);//返回字符串obj在目標字符串target的第一次出現的位置，如果target沒有匹配的串，Pos函數的返回值為0。例如，target:='Brian Wilfred'，則Pos('Wil',target)的返回值是7，Pos('hurbet',target)的返回值是0。

◇[DELPHI]關于處理注冊表
uses Registry;
var reg:Tregistry;
reg:=Tregistry.create;
reg.rootkey:='HKey_Current_User';
reg.openkey('Control Panel/Desktop',false);
reg.WriteString('Title Wallpaper','0');
reg.writeString('Wallpaper',filelistbox1.filename);
reg.closereg;
reg.free;

◇[DELPHI]關于鍵盤常量名
VK_BACK/VK_TAB/VK_RETURN/VK_SHIFT/VK_CONTROL/VK_MENU/VK_PAUSE/VK_ESCAPE
/VK_SPACE/VK_LEFT/VK_RIGHT/VK_UP/VK_DOWN
F1--F12：$70(112)--$7B(123)
A-Z：$41(65)--$5A(90)
0-9：$30(48)--$39(57)
◇[DELPHI]初步判斷程序母語
DELPHI軟件的DOS提示：This PRogram Must Be Run Under Win32.
VC++軟件的DOS提示：This Program Cannot Be Run In DOS Mode.

◇[DELPHI]操作Cookie
response.cookies("name").domain:='http://www.086net.com';
with response.cookies.add do
begin
name:='username';
value:='username';
end

◇[DELPHI]增加到文檔菜單連接
uses shellapi,shlOBJ;
shAddToRecentDocs(shArd_path,pchar(filepath));//增加連接
shAddToRecentDocs(shArd_path,nil);//清空

◇[雜類]備份智能ABC輸入法詞庫
windows/system/user.rem
windows/system/tmmr.rem

◇[DELPHI]判斷鼠標按鍵
if GetAsyncKeyState(VK_LButton)<>0 then ... //左鍵
if GetAsyncKeyState(VK_MButton)<>0 then ... //中鍵
if GetAsyncKeyState(VK_RButton)<>0 then ... //右鍵

◇[DELPHI]設置窗體的最大顯示
onformCreate事件
self.width:=screen.width;
self.height:=screen.height;

◇[DELPHI]按鍵接受消息
OnCreate事件中處理：application.OnMessage:=MyOnMessage;
procedure Tform1.MyOnMessage(var MSG:TMSG;var Handle:Boolean);
begin
if msg.message=256 then ... //ANY鍵
if msg.message=112 then ... //F1
if msg.message=113 then ... //F2
end;

◇[雜類]隱藏共享文件夾
共享效果：可訪問，但不可見（在資源管理、網絡鄰居中）
取共享名為：direction$
訪問：//computer/dirction/

◇[java Script]Java Script網頁常用效果
網頁60秒定時關閉
<script language="java script"><!--
settimeout('window.close();',60000)
--></script>
關閉窗口
<a href="/" onclick="Javascript:window.close();return false;">關閉</a>
定時轉URL
<meta http-equiv="refresh" content="40;url=http://www.086net.com">
設為首頁
<a onclick="this.style.behavior='url(#default#homepage)';this.sethomepage('http://086net.com');"href="#">設為首頁</a>
收藏本站
<a href="javascript:window.external.addfavorite('http://086net.com','[未名碼頭]')">收藏本站</a>
加入頻道
<a href="javascript:window.external.addchannel('http://086net.com')">加入頻道</a>

◇[DELPHI]隨機產生文本色
randomize;//隨機種子
memo1.font.color:=rgb(random(255),random(255),random(255));

◇[DELPHI]DELPHI5 UPDATE升級補丁序列號
1000003185
90X25fx0

◇[DELPHI]文件名的非法字符過濾
for i:=1 to length(s) do
if s[i] in ['/','/',':','*','?','<','>','|'] then

◇[DELPHI]轉換函數的定義及說明
datetimetofiledate (datetime:Tdatetime):longint; 將Tdatetime格式的日期時間值轉換成DOS格式的日期時間值
datetimetostr (datetime:Tdatetime):string; 將Tdatatime格式變量轉換成字符串，如果datetime參數不包含日期值，返回字符串日期顯示成為00/00/00，如果datetime參數中沒有時間值，返回字符串中的時間部分顯示成為00：00：00 AM
datetimetostring (var result string;
const format:string;
datetime:Tdatetime); 根據給定的格式字符串轉換時間和日期值，result為結果字符串，format為轉換格式字符串，datetime為日期時間值
datetostr (date:Tdatetime) 使用shortdateformat全局變量定義的格式字符串將date參數轉換成對應的字符串
floattodecimal (var result:Tfloatrec;value:
extended;precision,decimals:
integer); 將浮點數轉換成十進制表示
floattostr (value:extended):string 將浮點數value轉換成字符串格式，該轉換使用普通數字格式，轉換的有效位數為15位。
floattotext (buffer:pchar;value:extended;
format:Tfloatformat;precision,
digits:integer):integer; 用給定的格式、精度和小數將浮點值value轉換成十進制表示形式，轉換結果存放于buffer參數中，函數返回值為存儲到buffer中的字符位數，buffer是非0結果的字符串緩沖區。
floattotextfmt (buffer:pchar;value:extended;
format:pchar):integer 用給定的格式將浮點值value轉換成十進制表示形式，轉換結果存放于buffer參數中，函數返回值為存儲到buffer中的字符位數。
inttohex (value:longint;digits:integer):
string; 將給定的數值value轉換成十六進制的字符串。參數digits給出轉換結果字符串包含的數字位數。
inttostr (value:longint):string 將整數轉換成十進制形式字符串
strtodate (const S:string):Tdatetime 將字符串轉換成日期值，S必須包含一個合法的格式日期的字符串。
strtodatetime (const S:string):Tdatetime 將字符串S轉換成日期時間格式，S必須具有MM/DD/YY HH：MM：SS[AM|PM]格式，其中日期和時間分隔符與系統時期時間常量設置相關。如果沒有指定AM或PM信息，表示使用24小時制。
strtofloat (const S:string):extended; 將給定的字符串轉換成浮點數，字符串具有如下格式：
[+|-]nnn…[.]nnn…[<+|-><E|e><+|->nnnn]
strtoint (const S:string):longint 將數字字符串轉換成整數，字符串可以是十進制或十六進制格式，如果字符串不是一個合法的數字字符串，系統發生ECONVERTERROR異常
strtointdef (const S:string;default:
longint):longint; 將字符串S轉換成數字，如果不能將S轉換成數字，strtointdef函數返回參數default的值。
strtotime (const S:string):Tdatetime 將字符串S轉換成TDATETIME值，S具有HH：MM：SS[AM|PM]格式，實際的格式與系統的時間相關的全局變量有關。
timetostr (time:Tdatetime):string; 將參數TIME轉換成字符串。轉換結果字符串的格式與系統的時間相關常量的設置有關。

◇[DELPHI]程序不出現在ALT+CTRL+DEL
在implementation后添加聲明:
function RegisterServiceProcess(dwProcessID, dwType: Integer): Integer; stdcall; external 'KERNEL32.DLL';
RegisterServiceProcess(GetCurrentProcessID, 1);//隱藏
RegisterServiceProcess(GetCurrentProcessID, 0);//顯示
用ALT+DEL+CTRL看不見

◇[DELPHI]程序不出現在任務欄
uses windows
var
Extendedstyle : Integer;
begin
Application.Initialize;
//==============================================================
Extendedstyle := GetWindowLong (Application.Handle, GWL_EXstyle);
SetWindowLong(Application.Handle, GWL_EXstyle, Extendedstyle OR WS_EX_TOOLWINDOW
AND NOT WS_EX_APPWINDOW);
//===============================================================
Application.Createform(Tform1, form1);
Application.Run;
end.

◇[DELPHI]如何判斷撥號網絡是開還是關
if GetSystemMetrics(SM_NETWORK) AND $01 = $01 then
showmessage('在線!')
else showmessage('不在線!');

◇[DELPHI]實現IP到域名的轉換
function GetDomainName(Ip:string):string;
var
pH:PHostent;
data:twsadata;
ii:dWord;
begin
WSAStartup($101, Data);
ii:=inet_addr(pchar(ip));
pH:=gethostbyaddr(@ii,sizeof(ii),PF_INET);
if (ph<>nil) then
result:=pH.h_name
else
result:='';
WSACleanup;
end;

◇[DELPHI]處理“右鍵菜單”方法
var
reg: TRegistry;
begin
reg := TRegistry.Create;
reg.RootKey:=HKEY_CLASSES_ROOT;
reg.OpenKey('*/shell/check/command', true);
reg.WriteString('', '"' + application.ExeName + '" "%1"');
reg.CloseKey;
reg.OpenKey('*/shell/diary', false);
reg.WriteString('', '操作(&C)');
reg.CloseKey;
reg.Free;
showmessage('DONE!');
end;

◇[DELPHI]發送虛擬鍵值ctrl V
procedure sendpaste;
begin
keybd_event(VK_Control, MapVirtualKey(VK_Control, 0), 0, 0);
keybd_event(ord('V'), MapVirtualKey(ord('V'), 0), 0, 0);
keybd_event(ord('V'), MapVirtualKey(ord('V'), 0), KEYEVENTF_KEYUP, 0);
keybd_event(VK_Control, MapVirtualKey(VK_Control, 0), KEYEVENTF_KEYUP, 0);
end;

◇[DELPHI]當前的光驅的盤符
procedure getcdrom(var cd:char);
var
str:string;
drivers:integer;
driver:char;
i,temp:integer;
begin
drivers:=getlogicaldrives;
temp:=(1 and drivers);
for i:=0 to 26 do
begin
if temp=1 then
begin
driver:=char(i+integer('a'));
str:=driver+':';
if getdrivetype(pchar(str))=drive_cdrom then
begin
cd:=driver;
exit;
end;
end;
drivers:=(drivers shr 1);
temp:=(1 and drivers);
end;
end;

◇[DELPHI]字符的加密與解密
function cryptstr(const s:string; stype: dword):string;
var
i: integer;
fkey: integer;
begin
result:='';
case stype of
0: setpass;
begin
randomize;
fkey := random($ff);
for i:=1 to length(s) do
result := result+chr( ord(s[i]) xor i xor fkey);
result := result + char(fkey);
end;
1: getpass
begin
fkey := ord(s[length(s)]);
for i:=1 to length(s) - 1 do
result := result+chr( ord(s[i]) xor i xor fkey);
end;
end;

□◇[DELPHI]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;

□◇[DELPHI]DELPHI 支持的DAO數據格式
td.Fields.Append(td.CreateField ('dbBoolean',dbBoolean,0));
td.Fields.Append(td.CreateField ('dbByte',dbByte,0));
td.Fields.Append(td.CreateField ('dbInteger',dbInteger,0));
td.Fields.Append(td.CreateField ('dbLong',dbLong,0));
td.Fields.Append(td.CreateField ('dbCurrency',dbCurrency,0));
td.Fields.Append(td.CreateField ('dbSingle',dbSingle,0));
td.Fields.Append(td.CreateField ('dbDouble',dbDouble,0));
td.Fields.Append(td.CreateField ('dbDate',dbDate,0));
td.Fields.Append(td.CreateField ('dbBinary',dbBinary,0));
td.Fields.Append(td.CreateField ('dbText',dbText,0));
td.Fields.Append(td.CreateField ('dbLongBinary',dbLongBinary,0));
td.Fields.Append(td.CreateField ('dbMemo',dbMemo,0));
td.Fields['ID'].Set_Attributes(dbAutoIncrField);//自增字段

□◇[DELPHI]DELPHI配置MS SQL 7和BDE步驟
第一步，配置ODBC：
先在ODBC 中設數據源，安裝過SQL Server7.0 后,ODBC中有一項"系統DSN"應該有兩項
數據源，一個是MQIS，一個是LocalSever，任選一個選后點擊配置按鈕，不知你的SQL7.0
是不是安裝在本地機器上，如果是的話直接進行下一步，如果不是，在服務器一欄中填上
Server,然后進行下一步，填寫登錄ID 和密碼（登錄ID，和密碼是在SQL7.0中的用戶選項
中設的）。
第二步，配置BDE:
打開Delphi的BDE，然后點擊MQIS 或 LocalServer，就會提示用戶名和密碼，這和
ODBC的用戶名和密碼是一樣的，填上就行了。
第三步，配置程序：
如果用的是TTable，就在TTable的DatabaseName中選擇MQIS 或LocalServer,然后在
TableName中選擇Sale就行了，然后將Active改為True,Delphi彈出提示對話，填入用戶
名和密碼。
如果用的是TQuery,在TQuery上點擊右鍵，再擊"SQL Builder"，這是以界面方式配置
SQL語句，或者在TQuery的SQL中填入SQL語句。最后，別忘了將Active改為True。
在運行也可能配置TQuery,具體見Delphi幫助。

□◇[DELPHI]得到圖像上某一點的RGB值
procedure Tform1.Image1MouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
red,green,blue:byte ;
i:integer;
begin
i:= image1.Canvas.Pixels[x,y];
Blue:= GetBvalue(i);
Green:= GetGvalue(i):
Red:= GetRvalue(i);
Label1.Caption:=inttostr(Red);
Label2.Caption:=inttostr(Green);
Label3.Caption:=inttostr(Blue);
end;

□◇[DELPHI]關于日期格式分解轉換
var year,month,day:word;now2:Tdatatime;
now2:=date();
decodedate(now2,year,month,day);
lable1.Text :=inttostr(year)+'年'+inttostr(month)+'月'+inttostr(day)+'日';

◇[DELPHI]如何判斷當前網絡連接方式
判斷結果是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;

◇[DELPHI]如何判斷字符串是否是有效EMAIL地址
function IsEMail(EMail: String): Boolean;
var s: String;ETpos: Integer;
begin
ETpos:= pos('@', EMail);
if ETpos > 1 then
begin
s:= copy(EMail,ETpos+1,Length(EMail));
if (pos('.', s) > 1) and (pos('.', s) < length(s)) then
Result:= true else Result:= false;
end
else
Result:= false;
end;

◇[DELPHI]判斷系統是否連接INTERNET
需要引入URL.DLL中的InetIsOffline函數。
函數申明為：
function InetIsOffline(Flag: Integer): Boolean; stdcall; external 'URL.DLL';
然后就可以調用函數判斷系統是否連接到INTERNET
if InetIsOffline(0) then ShowMessage('not connected!')
else ShowMessage('connected!');
該函數返回TRUE如果本地系統沒有連接到INTERNET。
附：
大多數裝有IE或OFFICE97的系統都有此DLL可供調用。
InetIsOffline
BOOL InetIsOffline(
DWORD dwFlags,
);

◇[DELPHI]簡單地播放和暫停WAV文件
uses mmsystem;

function PlayWav(const FileName: string): Boolean;
begin
Result := PlaySound(PChar(FileName), 0, SND_ASYNC);
end;

procedure StopWav;
var
buffer: array[0..2] of char;
begin
buffer[0] := #0;
PlaySound(Buffer, 0, SND_PURGE);
end;

◇[DELPHI]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;

◇[DELPHI]網絡下載文件
uses UrlMon;

function DownloadFile(Source, Dest: string): Boolean;
begin
try
Result := UrlDownloadToFile(nil, PChar(source), PChar(Dest), 0, nil) = 0;
except
Result := False;
end;
end;

if DownloadFile('http://www.borland.com/delphi6.zip, 'c:/kylix.zip') then
ShowMessage('Download succesful')
else ShowMessage('Download unsuccesful')

◇[DELPHI]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;

◇[DELPHI]取得快捷方式中的連接
function ExeFromLink(const linkname: string): string;
var
FDir,
FName,
ExeName: PChar;
z: integer;
begin
ExeName:= StrAlloc(MAX_PATH);
FName:= StrAlloc(MAX_PATH);
FDir:= StrAlloc(MAX_PATH);
StrPCopy(FName, ExtractFileName(linkname));
StrPCopy(FDir, ExtractFilePath(linkname));
z:= FindExecutable(FName, FDir, ExeName);
if z > 32 then
Result:= StrPas(ExeName)
else
Result:= '';
StrDispose(FDir);
StrDispose(FName);
StrDispose(ExeName);
end;

◇[DELPHI]控制TCombobox的自動完成
{'Sorted' property of the TCombobox to true }
var lastKey: Word; //全局變量
//TCombobox的OnChange事件
procedure Tform1.AutoCompleteChange(Sender: TObject);
var
SearchStr: string;
retVal: integer;
begin
SearchStr := (Sender as TCombobox).Text;
if lastKey <> VK_BACK then // backspace: VK_BACK or $08
begin
retVal := (Sender as TCombobox).Perform(CB_FINDSTRING, -1, LongInt(PChar(SearchStr)));
if retVal > CB_Err then
begin
(Sender as TCombobox).ItemIndex := retVal;
(Sender as TCombobox).SelStart := Length(SearchStr);
(Sender as TCombobox).SelLength :=
(Length((Sender as TCombobox).Text) - Length(SearchStr));
end; // retVal > CB_Err
end; // lastKey <> VK_BACK
lastKey := 0; // reset lastKey
end;
//TCombobox的onKeyDown事件
procedure Tform1.AutoCompleteKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
lastKey := Key;
end;

◇[DELPHI]如何清空一個目錄
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;

◇[DELPHI]安裝程序如何添加到Uninstall列表
操作注冊表，如下：
1.在HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall鍵下建立一個主鍵，名稱任意。
例HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall/MyUninstall
2.在HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall/MyUnistall下鍵兩個串值，
這兩個串值的名稱是特定的：DisplayName和UninstallString。
3.給串DisplayName賦值為顯示在“刪除應用程序列表”中的名稱，如'Aiming Uninstall one';
給串UninstallString賦值為執行的刪除命令，如 C:/WIN97/uninst.exe -f"C:/TestPro/aimTest.isu"

◇[DELPHI]截獲WM_QUERYENDsession關機消息
type
Tform1 = class(Tform)
procedure WMQueryEndSession(var Message: TWMQueryEndSession); message WM_QUERYENDSESSION;
procedure CMEraseBkgnd(var Message:TWMEraseBkgnd);Message WM_ERASEBKGND;
private
{ Private declarations }
public
{ Public declarations }
end;

procedure Tform1.WMQueryEndSession(var Message: TWMQueryEndSession);
begin
Showmessage('computer is about to shut down');
end;

◇[DELPHI]獲取網上鄰居
procedure getnethood();//NT做服務器，WIN98上調試通過。
var
a,i:integer;
errcode:integer;
netres:array[0..1023] of netresource;
enumhandle:thandle;
enumentries:dword;
buffersize:dword;
s:string;
mylistitems:tlistitems;
mylistitem:tlistitem;
alldomain:tstrings;
begin //listcomputer is a listview to list all computers;controlcenter is a form.
alldomain:=tstringlist.Create ;
with netres[0] do begin
dwscope :=RESOURCE_GLOBALNET;
dwtype :=RESOURCETYPE_ANY;
dwdisplaytype :=RESOURCEDISPLAYTYPE_DOMAIN;
dwusage :=RESOURCEUSAGE_CONTAINER;
lplocalname :=nil;
lpremotename :=nil;
lpcomment :=nil;
lpprovider :=nil;
end; // 獲取所有的域
errcode:=wnetopenenum(RESOURCE_GLOBALNET,RESOURCETYPE_ANY,RESOURCEUSAGE_CONTAINER,@netres[0],enumhandle);
if errcode=NO_ERROR then begin
enumentries:=1024;
buffersize:=sizeof(netres);
errcode:=wnetenumresource(enumhandle,enumentries,@netres[0],buffersize);
end;
a:=0;
mylistitems :=controlcenter.lstcomputer.Items ;
mylistitems.Clear ;
while (string(netres[a].lpprovider)<>'') and (errcode=NO_ERROR) do
begin
alldomain.Add (netres[a].lpremotename);
a:=a+1;
end;
wnetcloseenum(enumhandle);
// 獲取所有的計算機
mylistitems :=controlcenter.lstcomputer.Items ;
mylistitems.Clear ;
for i:=0 to alldomain.Count-1 do
begin
with netres[0] do begin
dwscope :=RESOURCE_GLOBALNET;
dwtype :=RESOURCETYPE_ANY;
dwdisplaytype :=RESOURCEDISPLAYTYPE_SERVER;
dwusage :=RESOURCEUSAGE_CONTAINER;
lplocalname :=nil;
lpremotename :=pchar(alldomain[i]);
lpcomment :=nil;
lpprovider :=nil;
end;
ErrCode:=WNetOpenEnum(RESOURCE_GLOBALNET,RESOURCETYPE_ANY,RESOURCEUSAGE_CONTAINER,@netres[0],EnumHandle);
if errcode=NO_ERROR then
begin
EnumEntries:=1024;
BufferSize:=SizeOf(NetRes);
ErrCode:=WNetEnumResource(EnumHandle,EnumEntries,@NetRes[0],BufferSize);
end;
a:=0;
while (string(netres[a].lpprovider)<>'') and (errcode=NO_ERROR) do
begin
mylistitem :=mylistitems.Add ;
mylistitem.ImageIndex :=0;
mylistitem.Caption :=uppercase(stringreplace(string(NetRes[a].lpremotename),'//','',[rfReplaceAll]));
a:=a+1;
end;
wnetcloseenum(enumhandle);
end;
end;

◇[DELPHI]獲取某一計算機上的共享目錄
procedure getsharefolder(const computername:string);
var
errcode,a:integer;
netres:array[0..1023] of netresource;
enumhandle:thandle;
enumentries,buffersize:dword;
s:string;
mylistitems:tlistitems;
mylistitem:tlistitem;
mystrings:tstringlist;
begin
with netres[0] do begin
dwscope :=RESOURCE_GLOBALNET;
dwtype :=RESOURCETYPE_DISK;
dwdisplaytype :=RESOURCEDISPLAYTYPE_SHARE;
dwusage :=RESOURCEUSAGE_CONTAINER;
lplocalname :=nil;
lpremotename :=pchar(computername);
lpcomment :=nil;
lpprovider :=nil;
end; // 獲取根結點
errcode:=wnetopenenum(RESOURCE_GLOBALNET,RESOURCETYPE_DISK,RESOURCEUSAGE_CONTAINER,@netres[0],enumhandle);
if errcode=NO_ERROR then
begin
EnumEntries:=1024;
BufferSize:=SizeOf(NetRes);
ErrCode:=WNetEnumResource(EnumHandle,EnumEntries,@NetRes[0],BufferSize);
end;
wnetcloseenum(enumhandle);
a:=0;
mylistitems:=controlcenter.lstfile.Items ;
mylistitems.Clear ;
while (string(netres[a].lpprovider)<>'') and (errcode=NO_ERROR) do
begin
with mylistitems do
begin
mylistitem:=add;
mylistitem.ImageIndex :=4;
mylistitem.Caption :=extractfilename(netres[a].lpremotename);
end;
a:=a+1;
end;
end;

◇[DELPHI]得到硬盤序列號
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;

1.關于MDI主窗體背景新解
  在Form中添加Image控件
   設BMP圖象
   name為 IMG_BK
   在Foem的Create事件中寫入
   Self.brush.bitmap:=img_bk.picture.bitmap;

2.在標題欄處畫VCL控件(一行解決問題!!!)
   在 form 的onpaint 事件中
   控件.pointto(getdc(0),left,top);

3 Edit 中只輸入數字
    SetWindowLong(Edit1.Handle, GWL_STYLE,
                  GetWindowLong(Edit1.Handle, GWL_STYLE) or
                  ES_NUMBER);
4.類似MDI方式新解
在要設置child的oncreate方式下寫入:
           self.parent:='要設置為mainform的Form';

5. 屏幕的Refresh(只需一行!)
RedrawWindow(0,nil,0,RDW_ERASE or RDW_INVALIDATE or RDW_ALLCHILDREN);
                |     |
               ---   ----
             handle  RGN(可刷新局部屏幕)
6.類似DOS下的CLS指令的WINDOWS指令!
  paintdesktop(getdc(0));

7.擴展控件新功能
   在編程中 ,我們經常要控制控件的動作,但該控件又沒有提供該方法

   這時 ,可通過發消息給該控件 ,以達到我們的目的!

   如:
      button1.perform(wm_keydown,13,0);

      listbox1.perform(wm_vscroll,sb_linedown,0);

   等等   可少去 重載之苦!!!!!

8.閃爍標題如打印機超時(一行)
form 放一timer 控件

        time 事件  中 寫入 ;

             Flashwindow(application.handle,true);

9.在桌面上加個VCL控件!(不是畫的,不可refresh)
  windows.setparent(控件.handle,0);

注: 想放哪都行  (如'開始處狀態欄')

10.關于  '類似MDI方式新解(一行就行!!!!)'的修正
  windows.setparent(self.handle,'要設置為mainform的Form');

11 普通Form象MDI中mainform始終在最底層
        SetActiveWindow(0);
   或  SetwindowPos(...);
12 執行下列語句開始Windows屏幕保護程序
   SendMessage(HWND_BROADCAST,WM_SYSCOMMAND,SC_SCREENSAVE,0);
13 button 的 caption 多行顯示：
   SetWindowLong(Button1.handle, GWL_STYLE,
                 GetWindowlong(Button1.Handle, GWL_STYLE) or
                 BS_MULTILINE);
   必要時加上 Button1.Invalidate;

14.整死windows98 :)
   asm int $19 end

Q: 怎么來改變ListBox的字體呢？就修改其中的一行。

A: 先把ListBox1.Style 設成lbOwnerDrawFixed
然后在 OnDrawItem 事件下寫下如下代碼

procedure TForm1.ListBox1DrawItem(Control: TWinControl; Index: Integer;
 Rect: TRect; State: TOwnerDrawState);
var
 Offset: Integer;
begin
 Offset := 2;
 with (Control as TListBox).Canvas do begin
   FillRect(Rect);
   if Index = 2 then begin
     Font.Name := 'Fixedsys';
     Font.Color := clRed;
     Font.Size := 12;
   end else begin
     Font.Name := 'Arial';
     Font.Color := clBlack;
     Font.Size := 8;
   end;
   if odSelected in State then begin
     Font.Color := clWhite;
   end;
   TextOut(Rect.Left + Offset, Rect.Top, (Control as TListBox).Items[Index]);
 end;
end;

Q：怎么在RichEdit里面插入圖片？

A: 請到這里來看看會找到答案

http://www.undu.com/Articles/991107c.html

Q：怎么才能目錄呢？

A：我來。

uses ShellAPI;

procedure DeleteFiles(Source: string);
var
  FO: TShFileOpStruct;
begin
  FillChar(FO,SizeOf(FO),#0);
  FO.Wnd := Form1.Handle;
  FO.wFunc := FO_DELETE;
  FO.pFrom := PChar(Source);
  ShFileOperation(FO);
end;

procedure EmptyDirectory(Path: String);
begin
    if DirectoryExists(Path) then
    begin
         DeleteFiles(Path+'/*');
    end
    else
        ForceDirectories(Path);
end;

Q:如何映射網絡驅動器？

比如我要把//Server/sys映射為F盤。我需要一個函數比如

給出輸入參數為//server/sys/home/bruno給我的返回值是F:/home/bruno

A：

Function UNCToDrive(UNCPath: STring): STring;
var
  DriveNum: Integer;
  DriveChar: Char;
  DriveBits: set of 0..25;
  StartSTr,TestStr: STring;
begin
  result := UNCPath;
  StartSTr := UNCPath;
  Integer(DriveBits) := GetLogicalDrives;
  for DriveNum := 0 to 25 do
  begin
    if (DriveNum in DriveBits) then begin
      DriveChar := Char(DriveNum + Ord('A'));
      TestSTr := ExpandUNCFileName(DriveChar+':/');
      If TEstStr <> '' then
        If Pos(Uppercase(TestSTr),Uppercase(STartSTr)) > 0 then
           begin
              Delete(StartSTr,1,Length(TestSTr));
              result := DriveChar+':/'+StartSTr;
              break;
           end;
        end;
  end;
end;

Q：我有一些特殊語言的字體來用，它們存儲在我的EXE文件里，但是兩點。

   * 我不想放到font文件夾里
   * 我不想從EXE文件里面提取出來

如果可能，請告訴我。

因為，我的字體是自己做的不是windows自帶的，我想保護自己的東西。

A:不太可能，必須提取出來。你可以使用這個保護過程來保護你的文件不被修改和刪除。

在EXE執行的時候把字體放到臨時文件夾里，結束的時候刪除它。

function ProtectFile(sFilename : string) : hFile;
var
       hf: hFile;
       lwHFileSize, lwFilesize: longword;
       ofs : TOFStruct;
begin
       if FileExists(sFilename) then
       begin
               hf := OpenFile(pchar(sFilename), ofs, OF_READ or OF_WRITE or OF_SHARE_EXCLUSIVE);
               if hf <> 0 then
               begin
                       lwFilesize := GetFileSize(hf, @lwHFileSize);
                       if LockFile(hf, 0, 0, lwFilesize, lwHFilesize) then
                       Result := hf else Result := 0;
               end
               else Result := 0;
       end
       else Result := 0;
end;

//..
var
 ResS: TResourceStream;
 TempPath: array [0..MAX_PATH] of Char;
 TempDir: string;
begin
 GetTempPath(Sizeof(TempPath), TempPath);
 TempDir := StrPas(Path);
 ResS := TResourceStream.Create(hInstance, 'SOME_FONT', 'RT_FONT');
 ResS.SavetoFile(TempDir+'some_font.ttf');
 ResS.Free;
 AddFontResource(TempDir+'some_font.ttf');
 SendMessage(HWND_BROADCAST, WM_FONTCHANGE, 0, 0);
 ProtectFile(TempDir+'some_font.ttf');
end;

Q：如何得到當前的ProgramFiles得路徑？

A：用讀寫注冊表的方法就可以做到。

代碼如下：

uses registry;

procedure TForm1.Button1Click(Sender: TObject);
var
 reg:TRegistry;
begin
 reg:=TRegistry.Create;
 reg.RootKey:=HKEY_LOCAL_MACHINE;
 if reg.OpenKey('SOFTWARE/Microsoft/Windows/CurrentVersion',false) then
 begin
   edit1.Text:=reg.ReadString('ProgramFilesDir');
   reg.CloseKey;
   reg.Free;
 end;
end;

Q:如何在Jpg圖像上寫上字？

A：這里有個代碼。

hmm, here's a sample with help of Bitmap, you can chance the brush style of canvas to bsClear to make the text transparent

uses
 Jpeg;

procedure TForm1.Button1Click(Sender: TObject);
var
 Bmp : TBitmap;
 Jpg : TJpegImage;
begin
 try
   Bmp := TBitmap.Create;
   Jpg := TjpegImage.Create;
   Jpg.LoadFromFile('c:/img.jpg');
   Bmp.Assign(Jpg);
   Bmp.Canvas.Brush.Style := bsClear;
   Bmp.Canvas.Font.Color := clYellow;
   Bmp.Canvas.TextOut(10,10,'Hello World');
   Jpg.Assign(Bmp);
   Jpg.SaveToFile('c:/img2.jpg');
 finally
   bmp.Free;
   jpg.Free;
 end;
end;

Q：怎么用delphi修改文件的時間呢？

在windows下，屬性里面有三個日起，創建，修改，存儲。我怎么來修改??？

A：Here is the excerpt from the Jedi Code Library. If it is not complete then get the JCL.

type
 // indicates the file time to set, used by SetFileTimesHelper and SetDirTimesHelper
 TFileTimes = (ftLastaccess, ftLastWrite, ftCreation);

function SetFileTimesHelper(const FileName: string; const DateTime: TDateTime; Times: TFileTimes): Boolean;
var
 Handle: THandle;
 FileTime: TFileTime;
 SystemTime: TSystemTime;
begin
 Result := False;
 Handle := CreateFile(PChar(FileName), GENERIC_WRITE, FILE_SHARE_READ, nil,
   OPEN_EXISTING, 0, 0);
 if Handle <> INVALID_HANDLE_VALUE then
 try
   //SysUtils.DateTimeToSystemTime(DateTimeToLocalDateTime(DateTime), SystemTime);
   SysUtils.DateTimeToSystemTime(DateTime, SystemTime);
   if Windows.SystemTimeToFileTime(SystemTime, FileTime) then
   begin
     case Times of
       ftLastAccess:
         Result := SetFileTime(Handle, nil, @FileTime, nil);
       ftLastWrite:
         Result := SetFileTime(Handle, nil, nil, @FileTime);
       ftCreation:
         Result := SetFileTime(Handle, @FileTime, nil, nil);
     end;
   end;
 finally
   CloseHandle(Handle);
 end;
end;

//--------------------------------------------------------------------------------------------------

function SetFileLastAccess(const FileName: string; const DateTime: TDateTime): Boolean;
begin
 Result := SetFileTimesHelper(FileName, DateTime, ftLastAccess);
end;

//--------------------------------------------------------------------------------------------------

function SetFileLastWrite(const FileName: string; const DateTime: TDateTime): Boolean;
begin
 Result := SetFileTimesHelper(FileName, DateTime, ftLastWrite);
end;

//--------------------------------------------------------------------------------------------------

function SetFileCreation(const FileName: string; const DateTime: TDateTime): Boolean;
begin
 Result := SetFileTimesHelper(FileName, DateTime, ftCreation);
end;

google上的有關delphi得網址：

http://directory.google.com/Top/Computers/Programming/Languages/Delphi/?tc=1

yahoo上有關delphi得網址

http://dir.yahoo.com/Computers_and_Internet/Programming_and_Development/Languages/Delphi/

刪掉程序自己的exe文件
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
var
  F:TextFile;
begin
  AssignFile(F,'delself.bat');
  Rewrite(F);{F為TextFile類型}
  WriteLn(F,'del '+ExtractFileName(Application.ExeName));
  WriteLn(F,'del %0');   //刪除自己delself.bat
  CloseFile(F);
  WinExec('delself.bat',SW_HIDE);
end;

if ord(s[9])>128 then
  ShowMessage('該位置字符是漢字');
漢字是雙字節的
更改系統時間格式：

var
  str: string;
begin
  str := 'yyyy-mm-dd';
  if SetLocaleInfoa(LOCALE_SYSTEM_DEFAULT, LOCALE_SLONGDATE, PChar(str)) then
  begin
    showmessage('更改日期格式成功');
  end;
end;

休息一分鐘：
var
I:integer;
begin
  i:=gettickcount;
  while (Gettickcount-i)<=10000 do
    application.ProcessMessages;//保證消息循環
end;

取主文件名:
function retuFileName(const FileName: string): string;
var
  I: Integer;
begin
  I := LastDelimiter('.', FileName);
  Result := Copy(FileName, 1, i-1);

end;

(1).按下ctrl和其它鍵之后發生一事件。
    procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
    begin
      if (ssCtrl in Shift) and (key =67) then
         showmessage('keydown Ctrl+C');
    end;
(2).Dbgrid中用Enter鍵代替Tab鍵.
   procedure TForm1.DBGrid1KeyPress(Sender: TObject; var Key: Char);
   begin
     if Key = #13 then
     if ActiveControl = DBGrid1 then
     begin
        TDBGrid(ActiveControl).SelectedIndex := TDBGrid(ActiveControl).SelectedIndex + 1;
        Key := #0;
     end;
   end;
(3).Dbgrid中選擇多行發生一事件。
    procedure TForm1.Button1Click(Sender: TObject);
    var
    i:integer;
    bookmarklist:Tbookmarklist;
    bookmark:tbookmarkstr;
    begin
      bookmark:=adoquery1.Bookmark;
      bookmarklist:=dbgrid1.SelectedRows;
      try
      begin
        for i:=0 to bookmarklist.Count-1 do
        begin
          adoquery1.Bookmark:=bookmarklist[i];
          with adoquery1 do
          begin
            edit;
            fieldbyname('mdg').AsString:=edit2.Text;
            post;
          end;
        end;
      end;
      finally
      adoquery1.Bookmark:=bookmark;
      end;
    end;
(4).Form的一個出現效果。
    procedure TForm1.Button1Click(Sender: TObject);
    var
    r:thandle;
    i:integer;
    begin
      for i:=1 to trunc(width/1.414) do
      begin
        r:=CreateEllipticRgn(trunc(width/2)-i,trunc(height/2)-i,trunc(width/2)+i,trunc(height/2)+i);
        SetWindowRgn(handle,r,true);
        Application.ProcessMessages;
        sleep(1);
      end;
    end;
(5).用Enter代替Tab在編輯框中移動隹點。
    procedure TForm1.FormKeyPress(Sender: TObject; var Key: Char);
    begin
      if key=#13 then
        begin
          if not (Activecontrol is Tmemo) then
          begin
            key:=#0;
            keybd_event(vk_tab,mapvirtualkey(vk_tab,0),0,0);
          end;
        end;
    end;
(6).Progressbar加上色彩。
    const
    {$EXTERNALSYM PBS_MARQUEE}
    PBS_MARQUEE = 08;
    var
      Form1: TForm1;
    implementation
    {$R *.dfm}
    uses
    CommCtrl;
    procedure TForm1.Button1Click(Sender: TObject);
    begin
      // Set the Background color to teal
      Progressbar1.Brush.Color := clTeal;
      // Set bar color to yellow
      SendMessage(ProgressBar1.Handle, PBM_SETBARCOLOR, 0, clYellow);
    end;
(7).住點移動時編輯框色彩不同。
    procedure TForm1.Edit1Enter(Sender: TObject);
    begin
      (sender as tedit).Color:=clred;
    end;
    procedure TForm1.Edit1Exit(Sender: TObject);
    begin
      (sender as tedit).Color:=clwhite;
    end;
(8).備份和恢復
    procedure TForm1.Button1Click(Sender: TObject);
    begin
      if OpenDialog1.Execute then
      begin
        try
          adoconnection1.Connected:=False;
          adoconnection1.ConnectionString:='Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=master;Data Source=FRIEND-YOFZKSCO;'+
          'Use Procedure for Prepare=1;Auto Translate=True;Packet Size=4096;Workstation ID=FRIEND-YOFZKSCO;Use Encryption for Data=False;Tag with column collation when possible=False';
          adoconnection1.Connected:=True;
          with adoQuery1 do
          begin
            Close;
            SQL.Clear;
            SQL.Add('Backup DataBase sfa to disk ='''+opendialog1.FileName+'''');
            ExecSQL;
          end;
        except
          ShowMessage('±?·Y꧰ü');
        Exit;
        end;
      end;
      Application.MessageBox('1§?2?ú￡?êy?Y±?·Y3é1|','ìáê?',MB_OK + MB_ICONINFORMATION);
    end;
    procedure TForm1.Button2Click(Sender: TObject);
    begin
      if OpenDialog1.Execute then
      begin
        try
          adoconnection1.Connected:=false;
          adoconnection1.ConnectionString:='Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=master;Data Source=FRIEND-YOFZKSCO;'+
          'Use Procedure for Prepare=1;Auto Translate=True;Packet Size=4096;Workstation ID=FRIEND-YOFZKSCO;Use Encryption for Data=False;Tag with column collation when possible=False';
          adoconnection1.Connected:=true;
          with adoQuery1 do
          begin
            Close;
            SQL.Clear;
            SQL.Add('Restore DataBase sfa from disk ='''+opendialog1.FileName+'''');
            ExecSQL;
         end;
       except
         ShowMessage('???′꧰ü');
         Exit;
       end;
     end;
     Application.MessageBox('1§?2?ú￡?êy?Y???′3é1|','ìáê?',MB_OK + MB_ICONINFORMATION);
    end;

(9).查找局域網上的sqlserver報務器。
    uses Comobj;
    procedure TForm1.Button1Click(Sender: TObject);
    var
    SQLServer:Variant;
    ServerList:Variant;
    i,nServers:integer;
    sRetValue:String;
    begin
      SQLServer := CreateOleObject('SQLDMO.Application');
      ServerList:= SQLServer.ListAvailableSQLServers;
      nServers:=ServerList.Count;
      for i := 1 to nservers do
      ListBox1.Items.Add(ServerList.Item(i));
      SQLServer:=NULL;
      serverList:=NULL;
    end;
(10).窗體打開時的淡入效果。
    procedure TForm1.FormCreate(Sender: TObject);
    begin
      AnimateWindow (Handle, 400, AW_CENTER);
    end;
(11).動態創建窗體。
    procedure TForm1.Button1Click(Sender: TObject);
    begin
      try
        form2:=Tform2.Create(self);
        form2.ShowModal;
      finally
        form2.Free;
      end;
    end;
    procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
    begin
      action:=cafree;
    end;
    procedure TForm1.FormDestroy(Sender: TObject);
    begin
      form1:=nil;
    end;
(12).復制文件。
    procedure TForm1.Button1Click(Sender: TObject);
    begin
      try
      copyfileA(pchar('C:/AAA.txt'),pchar('D:/AAA.txt'),false);
      except
      showmessage('sfdsdf');
      end;
    end;
(13).復制文件夾。
    uses shellAPI;
    procedure TForm1.Button1Click(Sender: TObject);
    var
       lpFileOp: TSHFileOpStruct;
    begin
      with lpFileOp do
      begin
        Wnd:=Self.Handle;
        wfunc:=FO_COPY;
        pFrom:=pchar('C:/AAA');
        pTo:=pchar('D:/AAA');
        fFlags:=FOF_ALLOWUNDO;
        hNameMappings:=nil;
        lpszProgressTitle:=nil;
        fAnyOperationsAborted:=True;
     end;
     if SHFileOperation(lpFileOp)<>0 then
     ShowMessage('刪除失敗');
    end;
(14).改變Dbgrid的選定色。
    procedure TForm1.DBGrid1DrawDataCell(Sender: TObject; const Rect: TRect;
    Field: TField; State: TGridDrawState);
    begin
      if gdSelected in state then
      SetBkColor(dbgrid1.canvas.handle,clgreen)
      else
      setbkcolor(dbgrid1.canvas.handle,clwhite);
      dbgrid1.Canvas.TextRect(rect,0,0,field.AsString);
      dbgrid1.Canvas.Textout(rect.Left,rect.Top,field.AsString);
    end;
(15).檢測系統是否已安裝了ADO。
    uses registry;
    function Tform1.ADOInstalled:Boolean;
    var
    r:TRegistry;
    s:string;
    begin
      r := TRegistry.create;
      try
      with r do
      begin
        RootKey := HKEY_CLASSES_ROOT;
        OpenKey( '/ADODB.Connection/CurVer', false );
        s := ReadString('');
        if s <> '' then Result := True
        else Result := False;
        CloseKey;
      end;
      finally
       r.free;
      end;
    end;
    procedure TForm1.Button1Click(Sender: TObject);
    begin
     if ADOInstalled then showmessage('this computer has installed ADO');
    end;
(16).取利主機的ip地址。
    uses winsock;
    procedure TForm1.Button1Click(Sender: TObject);
    var
    IP:string;
    IPstr:String;
    buffer:array[1..32] of char;
    i:integer;
    WSData:TWSAdata;
    Host:PHostEnt;
    begin
      if WSAstartup(2,WSData)<>0 then
      begin
        showmessage('WS2_32.DLL3?ê??ˉ꧰ü.');
        exit;
      end;
      try
        if GetHostname(@buffer[1],32)<>0 then
        begin
          showmessage('??óDμ?μ??÷?ú??.');
        exit;
      end;
      except
        showmessage('??óD3é1|·μ???÷?ú??');
        exit;
      end;
      Host:=GetHostbyname(@buffer[1]);
      if Host=nil then
      begin
        showmessage('IPμ??·?a??.');
        exit;
      end
      else
      begin
        edit2.Text:=Host.h_name;
        edit3.Text:=chr(host.h_addrtype+64);
        for i:=1 to 4 do
        begin
         IP:=inttostr(ord(host.h_addr^[i-1]));
         if i<4 then
         ipstr:=ipstr+IP+'.'
        else
         edit1.Text:=ipstr+ip;
        end;
       end;
       WSACleanup;
    end;
(17).取得計算機名。
    function tform1.get_name:string;
    var  ComputerName: PChar;  size: DWord;
    begin
        GetMem(ComputerName,255);
        size:=255;
        if GetComputerName(ComputerName,size)=False then
           result:=''
        else
           result:=ComputerName;
        FreeMem(ComputerName);
    end;
    procedure TForm1.Button1Click(Sender: TObject);
    begin
      label1.Caption:=get_name;
    end;

(18).取得硬盤序列號。
    function tform1.GetHDSerialNumber: LongInt;
    {$IFDEF WIN32}
    var
      pdw : pDWord;
      mc, fl : dword;
    {$ENDIF}
    begin
      {$IfDef WIN32}
      New(pdw);
      GetVolumeInformation('c:/',nil,0,pdw,mc,fl,nil,0);
      Result := pdw^;
      dispose(pdw);
     {$ELSE}
      Result := GetWinFlags;
      {$ENDIF}
    end;
    procedure TForm1.Button1Click(Sender: TObject);
    begin
      edit1.Text:=inttostr(gethdserialnumber);
    end;
(19).限定光標移動范圍。
    procedure TForm1.Button1Click(Sender: TObject);
    var
    rect1:trect;
    begin
      rect1:=button2.BoundsRect;
      mapwindowpoints(handle,0,rect1,2);
      clipcursor(@rect1);
    end;
    procedure TForm1.Button2Click(Sender: TObject);
    var
    screenrect:trect;
    begin
      screenrect:=rect(0,0,screen.Width,screen.Height);
      clipcursor(@screenrect);
    end;
(20).限制edit框只能輸入數字。
    procedure TForm1.Edit1KeyPress(Sender: TObject; var Key: Char);
    begin
      if not (key in ['0'..'9','.',#8]) then
      begin
        key:=#0;
        Messagebeep(0);
      end;
    end;
(21).dbgrid中根據任一條件某一格變色。
    procedure TForm_main.DBGridEh1DrawColumnCell(Sender: TObject;
    const Rect: TRect; DataCol: Integer; Column: TColumnEh;
    State: TGridDrawState);
    begin
      if (trim(DataModule1.ADOQuery1.FieldByName('dczt').AsString)='OK') then
      begin
        if datacol=6 then
        begin
          DbGrideh1.Canvas.Brush.Color:=clGradientActiveCaption;
          DbGrideh1.DefaultDrawColumnCell(Rect,datacol,column,state);
        end;
      end;
    end;
(22).打開word文件。
    procedure TfjfsglForm.SpeedButton4Click(Sender: TObject);
    var
    MSWord: Variant;
    str:string;
    begin
      if trim(DataModule1.adoquery27.fieldbyname('fjmc').asstring)<>'' then
      begin
        str:=trim(DataModule1.ADOQuery27.fieldbyname('fjmc').AsString);
        MSWord:= CreateOLEObject('Word.Application');//
        MSWord.Documents.Open('d:/Program Files/Common Files/Sfa/'+str, True);//
        MSWord.Visible:=1;//
        str:='';
        MSWord.ActiveDocument.Range(0, 0);//
        MSWord.ActiveDocument.Range.InsertAfter(str);//?úWord?D???ó×?·?'Title'
        MSWord.ActiveDocument.Range.InsertParagraphAfter;
      end
      else
      showmessage('');
    end;
(23).word文件傳入和傳出數據庫。
    uses IdGlobal;
    procedure TdjhyForm.SpeedButton2Click(Sender: TObject);
    var
    sfilename:string;
    function BlobContentTostring(const Filename:string):string;
    begin
      with Tfilestream.Create(filename,fmopenread)  do
      try
        setlength(result,size);
        read(pointer(result)^,size);
      finally
        free;
      end;
    end;
    begin
      if opendialog1.Execute then
      begin
        sfilename:=opendialog1.FileName;
        DataModule1.ADOQuery14.Edit;
        DataModule1.ADOQuery14.FieldByName('word').AsString:=blobcontenttostring(sfilename);
        DataModule1.ADOQuery14.Post;
      end;
    end;
    procedure TdjhyForm.SpeedButton1Click(Sender: TObject);
    var
    sfilename:string;
    bs:Tadoblobstream;
    begin
      bs:=Tadoblobstream.Create(TBLOBfield(DataModule1.ADOQuery14.FieldByName('word')),bmread);
      try
        sfilename:=extractfilepath(application.ExeName)+trim(DataModule1.adoquery14.fieldbyname('hybh').AsString);
        sfilename:=sfilename+'.'+'doc';
        bs.SaveToFile(sfilename);
        try
          djhyopenform:=Tdjhyopenform.Create(self);
          djhyopenform.olecontainer1.CreateObjectFromFile(sfilename,false);
          djhyopenform.OleContainer1.Iconic:=true;