◇[DELPHI]网络邻居复制文件
uses shellapi;
copyfile(pchar('newfile.txt'),pchar('//computername/direction/targer.txt'),false);
◇[DELPHI]产生鼠标拖动效果
通过MouseMove事件、DragOver事件、EndDrag事件实现,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目录
uses shellapi;
var windir:array[0..255] of char;
getwindowsdirectory(windir,sizeof(windir));
或者从注册表中读取,位置:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion
SystemRoot键,取得如:C:\WINDOWS
◇[DELPHI]在form或其他容器上画线
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 tips:tstringlist;
tips:=tstringlist.create;
tips.loadfromfile('filename.txt');
edit1.text:=tips[0];
tips.add('last line addition string');
tips.insert(1,'insert string at NO 2 line');
tips.savetofile('newfile.txt');
tips.free;
◇[DELPHI]简单的剪贴板操作
richedit1.selectall;
richedit1.copytoclipboard;
richedit1.cuttoclipboard;
edit1.pastefromclipboard;
◇[DELPHI]关于文件、目录操作
Chdir('c:\abcdir');转到目录
Mkdir('dirname');建立目录
Rmdir('dirname');删除目录
GetCurrentDir;//取当前目录名,无''
Getdir(0,s);//取工作目录名s:='c:\abcdir';
Deletfile('abc.txt');//删除文件
Renamefile('old.txt','new.txt');//文件更名
ExtractFilename(filelistbox1.filename);//取文件名
ExtractFileExt(filelistbox1.filename);//取文件后缀
◇[DELPHI]处理文件属性
attr:=filegetattr(filelistbox1.filename);
if (attr and faReadonly)=faReadonly then ... //只读
if (attr and faSysfile)=faSysfile then ... //系统
if (attr and faArchive)=faArchive then ... //存档
if (attr and faHidden)=faHidden then ... //隐藏
◇[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:[email protected]','','',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]字符串的过程和函数
Insert(obj,target,pos);//字符串target插入在pos的位置。如插入结果大于target最大长度,多出字符将被截掉。如Pos在255以外,会产生运行错。例如,st:='Brian',则Insert('OK',st,2)会使st变为'BrOKian'。
Delete(st,pos,Num);//从st串中的pos(整型)位置开始删去个数为Num(整型)个字符的子字串。例如,st:='Brian',则Delete(st,3,2)将变为Brn。
Str(value,st);//将数值value(整型或实型)转换成字符串放在st中。例如,a=2.5E4时,则str(a:10,st)将使st的值为' 25000'。
Val(st,var,code);//把字符串表达式st转换为对应整型或实型数值,存放在var中。St必须是一个表示数值的字符串,并符合数值常数的规则。在转换过程中,如果没有检测出错误,变量code置为0,否则置为第一个出错字符的位置。例如,st:=25.4E3,x是一个实型变量,则val(st,x,code)将使X值为25400,code值为0。
Copy(st.pos.num);//返回st串中一个位置pos(整型)处开始的,含有num(整型)个字符的子串。如果pos大于st字符串的长度,那就会返回一个空串,如果pos在255以外,会引起运行错误。例如,st:='Brian',则Copy(st,2,2)返回'ri'。
Concat(st1,st2,st3……,stn);//把所有自变量表示出的字符串按所给出的顺序连接起来,并返回连接后的值。如果结果的长度255,将产生运行错误。例如,st1:='Brian',st2:=' ',st3:='Wilfred',则Concat(st1,st2,st3)返回'Brian Wilfred'。
Length(st);//返回字符串表达式st的长度。例如,st:='Brian',则Length(st)返回值为5。
Pos(obj,target);//返回字符串obj在目标字符串target的第一次出现的位置,如果target没有匹配的串,Pos函数的返回值为0。例如,target:='Brian Wilfred',则Pos('Wil',target)的返回值是7,Pos('hurbet',target)的返回值是0。
◇[DELPHI]关于处理注册表
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]关于键盘常量名
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)--$39(57)
◇[DELPHI]初步判断程序母语
DELPHI软件的DOS提示:This Program Must Be Run Under Win32.
VC++软件的DOS提示:This Program Cannot Be Run In DOS Mode.
◇[DELPHI]操作Cookie
response.cookies("name").domain:='http://www.086net.com';
with response.cookies.add do
begin
name:='username';
value:='username';
end
◇[DELPHI]增加到文档菜单连接
uses shellapi,shlOBJ;
shAddToRecentDocs(shArd_path,pchar(filepath));//增加连接
shAddToRecentDocs(shArd_path,nil);//清空
◇[杂类]备份智能ABC输入法词库
windows\system\user.rem
windows\system\tmmr.rem
◇[DELPHI]判断鼠标按键
if GetAsyncKeyState(VK_LButton)<>0 then ... //左键
if GetAsyncKeyState(VK_MButton)<>0 then ... //中键
if GetAsyncKeyState(VK_RButton)<>0 then ... //右键
◇[DELPHI]设置窗体的最大显示
onformCreate事件
self.width:=screen.width;
self.height:=screen.height;
◇[DELPHI]按键接受消息
OnCreate事件中处理:Application.OnMessage:=MyOnMessage;
procedure Tform1.MyOnMessage(var MSG:TMSG;var Handle:Boolean);
begin
if msg.message=256 then ... //ANY键
if msg.message=112 then ... //F1
if msg.message=113 then ... //F2
end;
◇[杂类]隐藏共享文件夹
共享效果:可访问,但不可见(在资源管理、网络邻居中)
取共享名为:direction$
访问://computer/dirction/
◇[Java Script]Java Script网页常用效果
网页60秒定时关闭
1<script language="java script"><!--
2settimeout('window.close();',60000)
3\--></script>
关闭窗口
1<a href="/" onclick="javascript:window.close();return false;">关闭</a>
定时转URL
1<meta content="40;url=http://www.086net.com" http-equiv="refresh"/>
设为首页
1<a href="#" onclick="this.style.behavior='url(#default#homepage)';this.sethomepage('http://086net.com');">设为首页</a>
收藏本站
1<a href="javascript:window.external.addfavorite('http://086net.com','[未名码头]')">收藏本站</a>
加入频道
1<a href="javascript:window.external.addchannel('http://086net.com')">加入频道</a>
◇[DELPHI]随机产生文本色
randomize;//随机种子
memo1.font.color:=rgb(random(255),random(255),random(255));
◇[DELPHI]DELPHI5 UPDATE升级补丁序列号
1000003185
90X25fx0
◇[DELPHI]文件名的非法字符过滤
for i:=1 to length(s) do
if s[i] in ['','/',':','*','?','<','>','|'] then
◇[DELPHI]转换函数的定义及说明
datetimetofiledate (datetime:Tdatetime):longint; 将Tdatetime格式的日期时间值转换成DOS格式的日期时间值
datetimetostr (datetime:Tdatetime):string; 将Tdatatime格式变量转换成字符串,如果datetime参数不包含日期值,返回字符串日期显示成为00/00/00,如果datetime参数中没有时间值,返回字符串中的时间部分显示成为00:00:00 AM
datetimetostring (var result string;
const format:string;
datetime:Tdatetime); 根据给定的格式字符串转换时间和日期值,result为结果字符串,format为转换格式字符串,datetime为日期时间值
datetostr (date:Tdatetime) 使用shortdateformat全局变量定义的格式字符串将date参数转换成对应的字符串
floattodecimal (var result:Tfloatrec;value:
extended;precision,decimals:
integer); 将浮点数转换成十进制表示
floattostr (value:extended):string 将浮点数value转换成字符串格式,该转换使用普通数字格式,转换的有效位数为15位。
floattotext (buffer:pchar;value:extended;
format:Tfloatformat;precision,
digits:integer):integer; 用给定的格式、精度和小数将浮点值value转换成十进制表示形式,转换结果存放于buffer参数中,函数返回值为存储到buffer中的字符位数,buffer是非0结果的字符串缓冲区。
floattotextfmt (buffer:pchar;value:extended;
format:pchar):integer 用给定的格式将浮点值value转换成十进制表示形式,转换结果存放于buffer参数中,函数返回值为存储到buffer中的字符位数。
inttohex (value:longint;digits:integer):
string; 将给定的数值value转换成十六进制的字符串。参数digits给出转换结果字符串包含的数字位数。
inttostr (value:longint):string 将整数转换成十进制形式字符串
strtodate (const S:string):Tdatetime 将字符串转换成日期值,S必须包含一个合法的格式日期的字符串。
strtodatetime (const S:string):Tdatetime 将字符串S转换成日期时间格式,S必须具有MM/DD/YY HH:MM:SS[AM|PM]格式,其中日期和时间分隔符与系统时期时间常量设置相关。如果没有指定AM或PM信息,表示使用24小时制。
strtofloat (const S:string):extended; 将给定的字符串转换成浮点数,字符串具有如下格式:
[+|-]nnn…[.]nnn…[<+|->
1<e|e><+|->nnnn]
2strtoint (const S:string):longint 将数字字符串转换成整数,字符串可以是十进制或十六进制格式,如果字符串不是一个合法的数字字符串,系统发生ECONVERTERROR异常
3strtointdef (const S:string;default:
4longint):longint; 将字符串S转换成数字,如果不能将S转换成数字,strtointdef函数返回参数default的值。
5strtotime (const S:string):Tdatetime 将字符串S转换成TDATETIME值,S具有HH:MM:SS[AM|PM]格式,实际的格式与系统的时间相关的全局变量有关。
6timetostr (time:Tdatetime):string; 将参数TIME转换成字符串。转换结果字符串的格式与系统的时间相关常量的设置有关。
7
8◇[DELPHI]程序不出现在ALT+CTRL+DEL
9在implementation后添加声明:
10function RegisterServiceProcess(dwProcessID, dwType: Integer): Integer; stdcall; external 'KERNEL32.DLL';
11RegisterServiceProcess(GetCurrentProcessID, 1);//隐藏
12RegisterServiceProcess(GetCurrentProcessID, 0);//显示
13用ALT+DEL+CTRL看不见
14
15◇[DELPHI]程序不出现在任务栏
16uses windows
17var
18Extendedstyle : Integer;
19begin
20Application.Initialize;
21//==============================================================
22Extendedstyle := GetWindowLong (Application.Handle, GWL_EXstyle);
23SetWindowLong(Application.Handle, GWL_EXstyle, Extendedstyle OR WS_EX_TOOLWINDOW
24AND NOT WS_EX_APPWINDOW);
25//===============================================================
26Application.Createform(Tform1, form1);
27Application.Run;
28end.
29
30◇[DELPHI]如何判断拨号网络是开还是关
31if GetSystemMetrics(SM_NETWORK) AND $01 = $01 then
32showmessage('在线!')
33else showmessage('不在线!');
34
35◇[DELPHI]实现IP到域名的转换
36function GetDomainName(Ip:string):string;
37var
38pH:PHostent;
39data:twsadata;
40ii:dword;
41begin
42WSAStartup($101, Data);
43ii:=inet_addr(pchar(ip));
44pH:=gethostbyaddr(@ii,sizeof(ii),PF_INET);
45if (ph<>nil) then
46result:=pH.h_name
47else
48result:='';
49WSACleanup;
50end;
51
52◇[DELPHI]处理“右键菜单”方法
53var
54reg: TRegistry;
55begin
56reg := TRegistry.Create;
57reg.RootKey:=HKEY_CLASSES_ROOT;
58reg.OpenKey('*\shell\check\command', true);
59reg.WriteString('', '"' + application.ExeName + '" "%1"');
60reg.CloseKey;
61reg.OpenKey('*\shell\diary', false);
62reg.WriteString('', '操作(&C)');
63reg.CloseKey;
64reg.Free;
65showmessage('DONE!');
66end;
67
68◇[DELPHI]发送虚拟键值ctrl V
69procedure sendpaste;
70begin
71keybd_event(VK_Control, MapVirtualKey(VK_Control, 0), 0, 0);
72keybd_event(ord('V'), MapVirtualKey(ord('V'), 0), 0, 0);
73keybd_event(ord('V'), MapVirtualKey(ord('V'), 0), KEYEVENTF_KEYUP, 0);
74keybd_event(VK_Control, MapVirtualKey(VK_Control, 0), KEYEVENTF_KEYUP, 0);
75end;
76
77◇[DELPHI]当前的光驱的盘符
78procedure getcdrom(var cd:char);
79var
80str:string;
81drivers:integer;
82driver:char;
83i,temp:integer;
84begin
85drivers:=getlogicaldrives;
86temp:=(1 and drivers);
87for i:=0 to 26 do
88begin
89if temp=1 then
90begin
91driver:=char(i+integer('a'));
92str:=driver+':';
93if getdrivetype(pchar(str))=drive_cdrom then
94begin
95cd:=driver;
96exit;
97end;
98end;
99drivers:=(drivers shr 1);
100temp:=(1 and drivers);
101end;
102end;
103
104◇[DELPHI]字符的加密与解密
105function cryptstr(const s:string; stype: dword):string;
106var
107i: integer;
108fkey: integer;
109begin
110result:='';
111case stype of
1120: setpass;
113begin
114randomize;
115fkey := random($ff);
116for i:=1 to length(s) do
117result := result+chr( ord(s[i]) xor i xor fkey);
118result := result + char(fkey);
119end;
1201: getpass
121begin
122fkey := ord(s[length(s)]);
123for i:=1 to length(s) - 1 do
124result := result+chr( ord(s[i]) xor i xor fkey);
125end;
126end;
127
128□◇[DELPHI]向其他应用程序发送模拟键
129var
130h: THandle;
131begin
132h := FindWindow(nil, '应用程序标题');
133PostMessage(h, WM_KEYDOWN, VK_F9, 0);//发送F9键
134end;
135
136□◇[DELPHI]DELPHI 支持的DAO数据格式
137td.Fields.Append(td.CreateField ('dbBoolean',dbBoolean,0));
138td.Fields.Append(td.CreateField ('dbByte',dbByte,0));
139td.Fields.Append(td.CreateField ('dbInteger',dbInteger,0));
140td.Fields.Append(td.CreateField ('dbLong',dbLong,0));
141td.Fields.Append(td.CreateField ('dbCurrency',dbCurrency,0));
142td.Fields.Append(td.CreateField ('dbSingle',dbSingle,0));
143td.Fields.Append(td.CreateField ('dbDouble',dbDouble,0));
144td.Fields.Append(td.CreateField ('dbDate',dbDate,0));
145td.Fields.Append(td.CreateField ('dbBinary',dbBinary,0));
146td.Fields.Append(td.CreateField ('dbText',dbText,0));
147td.Fields.Append(td.CreateField ('dbLongBinary',dbLongBinary,0));
148td.Fields.Append(td.CreateField ('dbMemo',dbMemo,0));
149td.Fields['ID'].Set_Attributes(dbAutoIncrField);//自增字段
150
151□◇[DELPHI]DELPHI配置MS SQL 7和BDE步骤
152第一步,配置ODBC:
153先在ODBC 中设数据源,安装过SQL Server7.0 后,ODBC中有一项"系统DSN"应该有两项
154数据源,一个是MQIS,一个是LocalSever,任选一个选后点击配置按钮,不知你的SQL7.0
155是不是安装在本地机器上,如果是的话直接进行下一步,如果不是,在服务器一栏中填上
156Server,然后进行下一步,填写登录ID 和密码(登录ID,和密码是在SQL7.0中的用户选项
157中设的)。
158第二步,配置BDE:
159打开Delphi的BDE,然后点击MQIS 或 LocalServer,就会提示用户名和密码,这和
160ODBC的用户名和密码是一样的,填上就行了。
161第三步,配置程序:
162如果用的是TTable,就在TTable的DatabaseName中选择MQIS 或LocalServer,然后在
163TableName中选择Sale就行了,然后将Active改为True,Delphi弹出提示对话,填入用户
164名和密码。
165如果用的是TQuery,在TQuery上点击右键,再击"SQL Builder",这是以界面方式配置
166SQL语句,或者在TQuery的SQL中填入SQL语句。最后,别忘了将Active改为True。
167在运行也可能配置TQuery,具体见Delphi帮助。
168
169□◇[DELPHI]得到图像上某一点的RGB值
170procedure Tform1.Image1MouseDown(Sender: TObject; Button: TMouseButton;
171Shift: TShiftState; X, Y: Integer);
172var
173red,green,blue:byte ;
174i:integer;
175begin
176i:= image1.Canvas.Pixels[x,y];
177Blue:= GetBvalue(i);
178Green:= GetGvalue(i):
179Red:= GetRvalue(i);
180Label1.Caption:=inttostr(Red);
181Label2.Caption:=inttostr(Green);
182Label3.Caption:=inttostr(Blue);
183end;
184
185□◇[DELPHI]关于日期格式分解转换
186var year,month,day:word;now2:Tdatatime;
187now2:=date();
188decodedate(now2,year,month,day);
189lable1.Text :=inttostr(year)+'年'+inttostr(month)+'月'+inttostr(day)+'日';
190
191◇[DELPHI]如何判断当前网络连接方式
192判断结果是MODEM、局域网或是代理服务器方式。
193uses wininet;
194Function ConnectionKind :boolean;
195var flags: dword;
196begin
197Result := InternetGetConnectedState(@flags, 0);
198if Result then
199begin
200if (flags and INTERNET_CONNECTION_MODEM) = INTERNET_CONNECTION_MODEM then
201begin
202showmessage('Modem');
203end;
204if (flags and INTERNET_CONNECTION_LAN) = INTERNET_CONNECTION_LAN then
205begin
206showmessage('LAN');
207end;
208if (flags and INTERNET_CONNECTION_PROXY) = INTERNET_CONNECTION_PROXY then
209begin
210showmessage('Proxy');
211end;
212if (flags and INTERNET_CONNECTION_MODEM_BUSY)=INTERNET_CONNECTION_MODEM_BUSY then
213begin
214showmessage('Modem Busy');
215end;
216end;
217end;
218
219◇[DELPHI]如何判断字符串是否是有效EMAIL地址
220function IsEMail(EMail: String): Boolean;
221var s: String;ETpos: Integer;
222begin
223ETpos:= pos( '@' , EMail);
224if ETpos > 1 then
225begin
226s:= copy(EMail,ETpos+1,Length(EMail));
227if (pos('.', s) > 1) and (pos('.', s) < length(s)) then
228Result:= true else Result:= false;
229end
230else
231Result:= false;
232end;
233
234◇[DELPHI]判断系统是否连接INTERNET
235需要引入URL.DLL中的InetIsOffline函数。
236函数申明为:
237function InetIsOffline(Flag: Integer): Boolean; stdcall; external 'URL.DLL';
238然后就可以调用函数判断系统是否连接到INTERNET
239if InetIsOffline(0) then ShowMessage('not connected!')
240else ShowMessage('connected!');
241该函数返回TRUE如果本地系统没有连接到INTERNET。
242附:
243大多数装有IE或OFFICE97的系统都有此DLL可供调用。
244InetIsOffline
245BOOL InetIsOffline(
246DWORD dwFlags,
247);
248
249◇[DELPHI]简单地播放和暂停WAV文件
250uses mmsystem;
251
252function PlayWav(const FileName: string): Boolean;
253begin
254Result := PlaySound(PChar(FileName), 0, SND_ASYNC);
255end;
256
257procedure StopWav;
258var
259buffer: array[0..2] of char;
260begin
261buffer[0] := #0;
262PlaySound(Buffer, 0, SND_PURGE);
263end;
264
265◇[DELPHI]取机器BIOS信息
266with Memo1.Lines do
267begin
268Add('MainBoardBiosName:'+^I+string(Pchar(Ptr($FE061))));
269Add('MainBoardBiosCopyRight:'+^I+string(Pchar(Ptr($FE091))));
270Add('MainBoardBiosDate:'+^I+string(Pchar(Ptr($FFFF5))));
271Add('MainBoardBiosSerialNo:'+^I+string(Pchar(Ptr($FEC71))));
272end;
273
274◇[DELPHI]网络下载文件
275uses UrlMon;
276
277function DownloadFile(Source, Dest: string): Boolean;
278begin
279try
280Result := UrlDownloadToFile(nil, PChar(source), PChar(Dest), 0, nil) = 0;
281except
282Result := False;
283end;
284end;
285
286if DownloadFile('http://www.borland.com/delphi6.zip, 'c:\kylix.zip') then
287ShowMessage('Download succesful')
288else ShowMessage('Download unsuccesful')
289
290◇[DELPHI]解析服务器IP地址
291uses winsock
292
293function IPAddrToName(IPAddr : String): String;
294var
295SockAddrIn: TSockAddrIn;
296HostEnt: PHostEnt;
297WSAData: TWSAData;
298begin
299WSAStartup($101, WSAData);
300SockAddrIn.sin_addr.s_addr:= inet_addr(PChar(IPAddr));
301HostEnt:= gethostbyaddr(@SockAddrIn.sin_addr.S_addr, 4, AF_INET);
302if HostEnt<>nil then result:=StrPas(Hostent^.h_name) else result:='';
303end;
304
305◇[DELPHI]取得快捷方式中的连接
306function ExeFromLink(const linkname: string): string;
307var
308FDir,
309FName,
310ExeName: PChar;
311z: integer;
312begin
313ExeName:= StrAlloc(MAX_PATH);
314FName:= StrAlloc(MAX_PATH);
315FDir:= StrAlloc(MAX_PATH);
316StrPCopy(FName, ExtractFileName(linkname));
317StrPCopy(FDir, ExtractFilePath(linkname));
318z:= FindExecutable(FName, FDir, ExeName);
319if z > 32 then
320Result:= StrPas(ExeName)
321else
322Result:= '';
323StrDispose(FDir);
324StrDispose(FName);
325StrDispose(ExeName);
326end;
327
328◇[DELPHI]控制TCombobox的自动完成
329{'Sorted' property of the TCombobox to true }
330var lastKey: Word; //全局变量
331//TCombobox的OnChange事件
332procedure Tform1.AutoCompleteChange(Sender: TObject);
333var
334SearchStr: string;
335retVal: integer;
336begin
337SearchStr := (Sender as TCombobox).Text;
338if lastKey <> VK_BACK then // backspace: VK_BACK or $08
339begin
340retVal := (Sender as TCombobox).Perform(CB_FINDSTRING, -1, LongInt(PChar(SearchStr)));
341if retVal > CB_Err then
342begin
343(Sender as TCombobox).ItemIndex := retVal;
344(Sender as TCombobox).SelStart := Length(SearchStr);
345(Sender as TCombobox).SelLength :=
346(Length((Sender as TCombobox).Text) - Length(SearchStr));
347end; // retVal > CB_Err
348end; // lastKey <> VK_BACK
349lastKey := 0; // reset lastKey
350end;
351//TCombobox的onKeyDown事件
352procedure Tform1.AutoCompleteKeyDown(Sender: TObject; var Key: Word;
353Shift: TShiftState);
354begin
355lastKey := Key;
356end;
357
358◇[DELPHI]如何清空一个目录
359function EmptyDirectory(TheDirectory :String ; Recursive : Boolean) :
360Boolean;
361var
362SearchRec : TSearchRec;
363Res : Integer;
364begin
365Result := False;
366TheDirectory := NormalDir(TheDirectory);
367Res := FindFirst(TheDirectory + '*.*', faAnyFile, SearchRec);
368try
369while Res = 0 do
370begin
371if (SearchRec.Name <> '.') and (SearchRec.Name <> '..') then
372begin
373if ((SearchRec.Attr and faDirectory) > 0) and Recursive
374then begin
375EmptyDirectory(TheDirectory + SearchRec.Name, True);
376RemoveDirectory(PChar(TheDirectory + SearchRec.Name));
377end
378else begin
379DeleteFile(PChar(TheDirectory + SearchRec.Name))
380end;
381end;
382Res := FindNext(SearchRec);
383end;
384Result := True;
385finally
386FindClose(SearchRec.FindHandle);
387end;
388end;
389
390◇[DELPHI]安装程序如何添加到Uninstall列表
391操作注册表,如下:
3921.在HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall键下建立一个主键,名称任意。
393例HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MyUninstall
3942.在HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MyUnistall下键两个串值,
395这两个串值的名称是特定的:DisplayName和UninstallString。
3963.给串DisplayName赋值为显示在“删除应用程序列表”中的名称,如'Aiming Uninstall one';
397给串UninstallString赋值为执行的删除命令,如 C:\WIN97\uninst.exe -f"C:\TestPro\aimTest.isu"
398
399◇[DELPHI]截获WM_QUERYENDSESSION关机消息
400type
401Tform1 = class(Tform)
402procedure WMQueryEndSession(var Message: TWMQueryEndSession); message WM_QUERYENDSESSION;
403procedure CMEraseBkgnd(var Message:TWMEraseBkgnd);Message WM_ERASEBKGND;
404private
405{ Private declarations }
406public
407{ Public declarations }
408end;
409
410procedure Tform1.WMQueryEndSession(var Message: TWMQueryEndSession);
411begin
412Showmessage('computer is about to shut down');
413end;
414
415◇[DELPHI]获取网上邻居
416procedure getnethood();//NT做服务器,WIN98上调试通过。
417var
418a,i:integer;
419errcode:integer;
420netres:array[0..1023] of netresource;
421enumhandle:thandle;
422enumentries:dword;
423buffersize:dword;
424s:string;
425mylistitems:tlistitems;
426mylistitem:tlistitem;
427alldomain:tstrings;
428begin //listcomputer is a listview to list all computers;controlcenter is a form.
429alldomain:=tstringlist.Create ;
430with netres[0] do begin
431dwscope :=RESOURCE_GLOBALNET;
432dwtype :=RESOURCETYPE_ANY;
433dwdisplaytype :=RESOURCEDISPLAYTYPE_DOMAIN;
434dwusage :=RESOURCEUSAGE_CONTAINER;
435lplocalname :=nil;
436lpremotename :=nil;
437lpcomment :=nil;
438lpprovider :=nil;
439end; // 获取所有的域
440errcode:=wnetopenenum(RESOURCE_GLOBALNET,RESOURCETYPE_ANY,RESOURCEUSAGE_CONTAINER,@netres[0],enumhandle);
441if errcode=NO_ERROR then begin
442enumentries:=1024;
443buffersize:=sizeof(netres);
444errcode:=wnetenumresource(enumhandle,enumentries,@netres[0],buffersize);
445end;
446a:=0;
447mylistitems :=controlcenter.lstcomputer.Items ;
448mylistitems.Clear ;
449while (string(netres[a].lpprovider)<>'') and (errcode=NO_ERROR) do
450begin
451alldomain.Add (netres[a].lpremotename);
452a:=a+1;
453end;
454wnetcloseenum(enumhandle);
455// 获取所有的计算机
456mylistitems :=controlcenter.lstcomputer.Items ;
457mylistitems.Clear ;
458for i:=0 to alldomain.Count-1 do
459begin
460with netres[0] do begin
461dwscope :=RESOURCE_GLOBALNET;
462dwtype :=RESOURCETYPE_ANY;
463dwdisplaytype :=RESOURCEDISPLAYTYPE_SERVER;
464dwusage :=RESOURCEUSAGE_CONTAINER;
465lplocalname :=nil;
466lpremotename :=pchar(alldomain[i]);
467lpcomment :=nil;
468lpprovider :=nil;
469end;
470ErrCode:=WNetOpenEnum(RESOURCE_GLOBALNET,RESOURCETYPE_ANY,RESOURCEUSAGE_CONTAINER,@netres[0],EnumHandle);
471if errcode=NO_ERROR then
472begin
473EnumEntries:=1024;
474BufferSize:=SizeOf(NetRes);
475ErrCode:=WNetEnumResource(EnumHandle,EnumEntries,@NetRes[0],BufferSize);
476end;
477a:=0;
478while (string(netres[a].lpprovider)<>'') and (errcode=NO_ERROR) do
479begin
480mylistitem :=mylistitems.Add ;
481mylistitem.ImageIndex :=0;
482mylistitem.Caption :=uppercase(stringreplace(string(NetRes[a].lpremotename),'\\\','',[rfReplaceAll]));
483a:=a+1;
484end;
485wnetcloseenum(enumhandle);
486end;
487end;
488
489◇[DELPHI]获取某一计算机上的共享目录
490procedure getsharefolder(const computername:string);
491var
492errcode,a:integer;
493netres:array[0..1023] of netresource;
494enumhandle:thandle;
495enumentries,buffersize:dword;
496s:string;
497mylistitems:tlistitems;
498mylistitem:tlistitem;
499mystrings:tstringlist;
500begin
501with netres[0] do begin
502dwscope :=RESOURCE_GLOBALNET;
503dwtype :=RESOURCETYPE_DISK;
504dwdisplaytype :=RESOURCEDISPLAYTYPE_SHARE;
505dwusage :=RESOURCEUSAGE_CONTAINER;
506lplocalname :=nil;
507lpremotename :=pchar(computername);
508lpcomment :=nil;
509lpprovider :=nil;
510end; // 获取根结点
511errcode:=wnetopenenum(RESOURCE_GLOBALNET,RESOURCETYPE_DISK,RESOURCEUSAGE_CONTAINER,@netres[0],enumhandle);
512if errcode=NO_ERROR then
513begin
514EnumEntries:=1024;
515BufferSize:=SizeOf(NetRes);
516ErrCode:=WNetEnumResource(EnumHandle,EnumEntries,@NetRes[0],BufferSize);
517end;
518wnetcloseenum(enumhandle);
519a:=0;
520mylistitems:=controlcenter.lstfile.Items ;
521mylistitems.Clear ;
522while (string(netres[a].lpprovider)<>'') and (errcode=NO_ERROR) do
523begin
524with mylistitems do
525begin
526mylistitem:=add;
527mylistitem.ImageIndex :=4;
528mylistitem.Caption :=extractfilename(netres[a].lpremotename);
529end;
530a:=a+1;
531end;
532end;
533
534◇[DELPHI]得到硬盘序列号
535var SerialNum : pdword; a, b : dword; Buffer : array [0..255] of char;
536begin
537if GetVolumeInformation('c:\', Buffer, SizeOf(Buffer), SerialNum, a, b, nil, 0) then Label1.Caption := IntToStr(SerialNum^);
538end;
539
540
5411.关于MDI主窗体背景新解
542在Form中添加Image控件
543设BMP图象
544name为 IMG_BK
545在Foem的Create事件中写入
546Self.brush.bitmap:=img_bk.picture.bitmap;
547
5482.在标题栏处画VCL控件(一行解决问题!!!)
549在 form 的onpaint 事件中
550控件.pointto(getdc(0),left,top);
551
5523 Edit 中只输入数字
553SetWindowLong(Edit1.Handle, GWL_STYLE,
554GetWindowLong(Edit1.Handle, GWL_STYLE) or
555ES_NUMBER);
5564.类似MDI方式新解
557在要设置child的oncreate方式下写入:
558self.parent:='要设置为mainform的Form';
559
5605\. 屏幕的Refresh(只需一行!)
561RedrawWindow(0,nil,0,RDW_ERASE or RDW_INVALIDATE or RDW_ALLCHILDREN);
562| |
563\--- ----
564handle RGN(可刷新局部屏幕)
5656.类似DOS下的CLS指令的WINDOWS指令!
566paintdesktop(getdc(0));
567
5687.扩展控件新功能
569在编程中 ,我们经常要控制控件的动作,但该控件又没有提供该方法
570
571这时 ,可通过发消息给该控件 ,以达到我们的目的!
572
573如:
574button1.perform(wm_keydown,13,0);
575
576listbox1.perform(wm_vscroll,sb_linedown,0);
577
578等等 可少去 重载之苦!!!!!
579
5808.闪烁标题如打印机超时(一行)
581form 放一timer 控件
582
583time 事件 中 写入 ;
584
585flashwindow(application.handle,true);
586
587
5889.在桌面上加个VCL控件!(不是画的,不可refresh)
589windows.setparent(控件.handle,0);
590
591注: 想放哪都行 (如'开始处状态栏')
592
593
59410.关于 '类似MDI方式新解(一行就行!!!!)'的修正
595windows.setparent(self.handle,'要设置为mainform的Form');
596
59711 普通Form象MDI中mainform始终在最底层
598SetActiveWindow(0);
599或 SetwindowPos(...);
60012 执行下列语句开始Windows屏幕保护程序
601SendMessage(HWND_BROADCAST,WM_SYSCOMMAND,SC_SCREENSAVE,0);
60213 button 的 caption 多行显示:
603SetWindowLong(Button1.handle, GWL_STYLE,
604GetWindowlong(Button1.Handle, GWL_STYLE) or
605BS_MULTILINE);
606必要时加上 Button1.Invalidate;
607
60814.整死windows98 :)
609asm int $19 end
610
611Q: 怎么来改变ListBox的字体呢?就修改其中的一行。
612
613A: 先把ListBox1.Style 设成lbOwnerDrawFixed
614然后在 OnDrawItem 事件下写下如下代码
615
616procedure TForm1.ListBox1DrawItem(Control: TWinControl; Index: Integer;
617Rect: TRect; State: TOwnerDrawState);
618var
619Offset: Integer;
620begin
621Offset := 2;
622with (Control as TListBox).Canvas do begin
623FillRect(Rect);
624if Index = 2 then begin
625Font.Name := 'Fixedsys';
626Font.Color := clRed;
627Font.Size := 12;
628end else begin
629Font.Name := 'Arial';
630Font.Color := clBlack;
631Font.Size := 8;
632end;
633if odSelected in State then begin
634Font.Color := clWhite;
635end;
636TextOut(Rect.Left + Offset, Rect.Top, (Control as TListBox).Items[Index]);
637end;
638end;
639
640
641Q:怎么在RichEdit里面插入图片?
642
643A: 请到这里来看看会找到答案
644
645http://www.undu.com/Articles/991107c.html
646
647
648Q:怎么才能目录呢?
649
650A:我来。
651
652uses ShellAPI;
653
654procedure DeleteFiles(Source: string);
655var
656FO: TShFileOpStruct;
657begin
658FillChar(FO,SizeOf(FO),#0);
659FO.Wnd := Form1.Handle;
660FO.wFunc := FO_DELETE;
661FO.pFrom := PChar(Source);
662ShFileOperation(FO);
663end;
664
665procedure EmptyDirectory(Path: String);
666begin
667if DirectoryExists(Path) then
668begin
669DeleteFiles(Path+'\\*');
670end
671else
672ForceDirectories(Path);
673end;
674
675Q:如何映射网络驱动器?
676
677比如我要把 \\\Server\sys 映射为F盘。我需要一个函数比如
678
679给出输入参数为 \\\server\sys\home\bruno 给我的返回值是F:\home\bruno
680
681A:
682
683Function UNCToDrive(UNCPath: STring): STring;
684var
685DriveNum: Integer;
686DriveChar: Char;
687DriveBits: set of 0..25;
688StartSTr,TestStr: STring;
689begin
690result := UNCPath;
691StartSTr := UNCPath;
692Integer(DriveBits) := GetLogicalDrives;
693for DriveNum := 0 to 25 do
694begin
695if (DriveNum in DriveBits) then begin
696DriveChar := Char(DriveNum + Ord('A'));
697TestSTr := ExpandUNCFileName(DriveChar+':\');
698If TEstStr <> '' then
699If Pos(Uppercase(TestSTr),Uppercase(STartSTr)) > 0 then
700begin
701Delete(StartSTr,1,Length(TestSTr));
702result := DriveChar+':\'+StartSTr;
703break;
704end;
705end;
706end;
707end;
708
709
710Q:我有一些特殊语言的字体来用,它们存储在我的EXE文件里,但是两点。
711
712* 我不想放到font文件夹里
713* 我不想从EXE文件里面提取出来
714
715如果可能,请告诉我。
716
717因为,我的字体是自己做的不是windows自带的,我想保护自己的东西。
718
719A:不太可能,必须提取出来。你可以使用这个保护过程来保护你的文件不被修改和删除。
720
721在EXE执行的时候把字体放到临时文件夹里,结束的时候删除它。
722
723function ProtectFile(sFilename : string) : hFile;
724var
725hf: hFile;
726lwHFileSize, lwFilesize: longword;
727ofs : TOFStruct;
728begin
729if FileExists(sFilename) then
730begin
731hf := OpenFile(pchar(sFilename), ofs, OF_READ or OF_WRITE or OF_SHARE_EXCLUSIVE);
732if hf <> 0 then
733begin
734lwFilesize := GetFileSize(hf, @lwHFileSize);
735if LockFile(hf, 0, 0, lwFilesize, lwHFilesize) then
736Result := hf else Result := 0;
737end
738else Result := 0;
739end
740else Result := 0;
741end;
742
743//..
744var
745ResS: TResourceStream;
746TempPath: array [0..MAX_PATH] of Char;
747TempDir: string;
748begin
749GetTempPath(Sizeof(TempPath), TempPath);
750TempDir := StrPas(Path);
751ResS := TResourceStream.Create(hInstance, 'SOME_FONT', 'RT_FONT');
752ResS.SavetoFile(TempDir+'some_font.ttf');
753ResS.Free;
754AddFontResource(TempDir+'some_font.ttf');
755SendMessage(HWND_BROADCAST, WM_FONTCHANGE, 0, 0);
756ProtectFile(TempDir+'some_font.ttf');
757end;
758
759
760Q:如何得到当前的ProgramFiles得路径?
761
762A:用读写注册表的方法就可以做到。
763
764代码如下:
765
766uses registry;
767
768procedure TForm1.Button1Click(Sender: TObject);
769var
770reg:TRegistry;
771begin
772reg:=TRegistry.Create;
773reg.RootKey:=HKEY_LOCAL_MACHINE;
774if reg.OpenKey('SOFTWARE\Microsoft\Windows\CurrentVersion',false) then
775begin
776edit1.Text:=reg.ReadString('ProgramFilesDir');
777reg.CloseKey;
778reg.Free;
779end;
780end;
781
782
783Q:如何在Jpg图像上写上字?
784
785A:这里有个代码。
786
787hmm, here's a sample with help of Bitmap, you can chance the brush style of canvas to bsClear to make the text transparent
788
789
790uses
791Jpeg;
792
793procedure TForm1.Button1Click(Sender: TObject);
794var
795Bmp : TBitmap;
796Jpg : TJpegImage;
797begin
798try
799Bmp := TBitmap.Create;
800Jpg := TjpegImage.Create;
801Jpg.LoadFromFile('c:\img.jpg');
802Bmp.Assign(Jpg);
803Bmp.Canvas.Brush.Style := bsClear;
804Bmp.Canvas.Font.Color := clYellow;
805Bmp.Canvas.TextOut(10,10,'Hello World');
806Jpg.Assign(Bmp);
807Jpg.SaveToFile('c:\img2.jpg');
808finally
809bmp.Free;
810jpg.Free;
811end;
812end;
813
814Q:怎么用delphi修改文件的时间呢?
815
816在windows下,属性里面有三个日起,创建,修改,存储。我怎么来修改啊?
817
818A:Here is the excerpt from the Jedi Code Library. If it is not complete then get the JCL.
819
820type
821// indicates the file time to set, used by SetFileTimesHelper and SetDirTimesHelper
822TFileTimes = (ftLastAccess, ftLastWrite, ftCreation);
823
824function SetFileTimesHelper(const FileName: string; const DateTime: TDateTime; Times: TFileTimes): Boolean;
825var
826Handle: THandle;
827FileTime: TFileTime;
828SystemTime: TSystemTime;
829begin
830Result := False;
831Handle := CreateFile(PChar(FileName), GENERIC_WRITE, FILE_SHARE_READ, nil,
832OPEN_EXISTING, 0, 0);
833if Handle <> INVALID_HANDLE_VALUE then
834try
835//SysUtils.DateTimeToSystemTime(DateTimeToLocalDateTime(DateTime), SystemTime);
836SysUtils.DateTimeToSystemTime(DateTime, SystemTime);
837if Windows.SystemTimeToFileTime(SystemTime, FileTime) then
838begin
839case Times of
840ftLastAccess:
841Result := SetFileTime(Handle, nil, @FileTime, nil);
842ftLastWrite:
843Result := SetFileTime(Handle, nil, nil, @FileTime);
844ftCreation:
845Result := SetFileTime(Handle, @FileTime, nil, nil);
846end;
847end;
848finally
849CloseHandle(Handle);
850end;
851end;
852
853//--------------------------------------------------------------------------------------------------
854
855function SetFileLastAccess(const FileName: string; const DateTime: TDateTime): Boolean;
856begin
857Result := SetFileTimesHelper(FileName, DateTime, ftLastAccess);
858end;
859
860//--------------------------------------------------------------------------------------------------
861
862function SetFileLastWrite(const FileName: string; const DateTime: TDateTime): Boolean;
863begin
864Result := SetFileTimesHelper(FileName, DateTime, ftLastWrite);
865end;
866
867//--------------------------------------------------------------------------------------------------
868
869function SetFileCreation(const FileName: string; const DateTime: TDateTime): Boolean;
870begin
871Result := SetFileTimesHelper(FileName, DateTime, ftCreation);
872end;
873
874
875google上的有关delphi得网址:
876
877http://directory.google.com/Top/Computers/Programming/Languages/Delphi/?tc=1
878
879yahoo上有关delphi得网址
880
881http://dir.yahoo.com/Computers_and_Internet/Programming_and_Development/Languages/Delphi/
882
883
884删掉程序自己的exe文件
885procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
886var
887F:TextFile;
888begin
889AssignFile(F,'delself.bat');
890Rewrite(F);{F为TextFile类型}
891WriteLn(F,'del '+ExtractFileName(Application.ExeName));
892WriteLn(F,'del %0'); //删除自己delself.bat
893CloseFile(F);
894WinExec('delself.bat',SW_HIDE);
895end;
896
897
898if ord(s[9])>128 then
899ShowMessage('该位置字符是汉字');
900汉字是双字节的
901更改系统时间格式:
902
903var
904str: string;
905begin
906str := 'yyyy-mm-dd';
907if SetLocaleInfoa(LOCALE_SYSTEM_DEFAULT, LOCALE_SLONGDATE, PChar(str)) then
908begin
909showmessage('更改日期格式成功');
910end;
911end;
912
913休息一分钟:
914var
915I:integer;
916begin
917i:=gettickcount;
918while (Gettickcount-i)<=10000 do
919application.ProcessMessages;//保证消息循环
920end;
921
922
923取主文件名:
924function retuFileName(const FileName: string): string;
925var
926I: Integer;
927begin
928I := LastDelimiter('.', FileName);
929Result := Copy(FileName, 1, i-1);
930
931end;
932
933(1).按下ctrl和其它键之后发生一事件。
934procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word;
935Shift: TShiftState);
936begin
937if (ssCtrl in Shift) and (key =67) then
938showmessage('keydown Ctrl+C');
939end;
940(2).Dbgrid中用Enter键代替Tab键.
941procedure TForm1.DBGrid1KeyPress(Sender: TObject; var Key: Char);
942begin
943if Key = #13 then
944if ActiveControl = DBGrid1 then
945begin
946TDBGrid(ActiveControl).SelectedIndex := TDBGrid(ActiveControl).SelectedIndex + 1;
947Key := #0;
948end;
949end;
950(3).Dbgrid中选择多行发生一事件。
951procedure TForm1.Button1Click(Sender: TObject);
952var
953i:integer;
954bookmarklist:Tbookmarklist;
955bookmark:tbookmarkstr;
956begin
957bookmark:=adoquery1.Bookmark;
958bookmarklist:=dbgrid1.SelectedRows;
959try
960begin
961for i:=0 to bookmarklist.Count-1 do
962begin
963adoquery1.Bookmark:=bookmarklist[i];
964with adoquery1 do
965begin
966edit;
967fieldbyname('mdg').AsString:=edit2.Text;
968post;
969end;
970end;
971end;
972finally
973adoquery1.Bookmark:=bookmark;
974end;
975end;
976(4).Form的一个出现效果。
977procedure TForm1.Button1Click(Sender: TObject);
978var
979r:thandle;
980i:integer;
981begin
982for i:=1 to trunc(width/1.414) do
983begin
984r:=CreateEllipticRgn(trunc(width/2)-i,trunc(height/2)-i,trunc(width/2)+i,trunc(height/2)+i);
985SetWindowRgn(handle,r,true);
986Application.ProcessMessages;
987sleep(1);
988end;
989end;
990(5).用Enter代替Tab在编辑框中移动隹点。
991procedure TForm1.FormKeyPress(Sender: TObject; var Key: Char);
992begin
993if key=#13 then
994begin
995if not (Activecontrol is Tmemo) then
996begin
997key:=#0;
998keybd_event(vk_tab,mapvirtualkey(vk_tab,0),0,0);
999end;
1000end;
1001end;
1002(6).Progressbar加上色彩。
1003const
1004{$EXTERNALSYM PBS_MARQUEE}
1005PBS_MARQUEE = 08;
1006var
1007Form1: TForm1;
1008implementation
1009{$R *.dfm}
1010uses
1011CommCtrl;
1012procedure TForm1.Button1Click(Sender: TObject);
1013begin
1014// Set the Background color to teal
1015Progressbar1.Brush.Color := clTeal;
1016// Set bar color to yellow
1017SendMessage(ProgressBar1.Handle, PBM_SETBARCOLOR, 0, clYellow);
1018end;
1019(7).住点移动时编辑框色彩不同。
1020procedure TForm1.Edit1Enter(Sender: TObject);
1021begin
1022(sender as tedit).Color:=clred;
1023end;
1024procedure TForm1.Edit1Exit(Sender: TObject);
1025begin
1026(sender as tedit).Color:=clwhite;
1027end;
1028(8).备份和恢复
1029procedure TForm1.Button1Click(Sender: TObject);
1030begin
1031if OpenDialog1.Execute then
1032begin
1033try
1034adoconnection1.Connected:=False;
1035adoconnection1.ConnectionString:='Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=master;Data Source=FRIEND-YOFZKSCO;'+
1036'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';
1037adoconnection1.Connected:=True;
1038with adoQuery1 do
1039begin
1040Close;
1041SQL.Clear;
1042SQL.Add('Backup DataBase sfa to disk ='''+opendialog1.FileName+'''');
1043ExecSQL;
1044end;
1045except
1046ShowMessage('±?·Yê§°ü');
1047Exit;
1048end;
1049end;
1050Application.MessageBox('1§?2?ú£?êy?Y±?·Y3é1|','ìáê?',MB_OK + MB_ICONINFORMATION);
1051end;
1052procedure TForm1.Button2Click(Sender: TObject);
1053begin
1054if OpenDialog1.Execute then
1055begin
1056try
1057adoconnection1.Connected:=false;
1058adoconnection1.ConnectionString:='Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=master;Data Source=FRIEND-YOFZKSCO;'+
1059'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';
1060adoconnection1.Connected:=true;
1061with adoQuery1 do
1062begin
1063Close;
1064SQL.Clear;
1065SQL.Add('Restore DataBase sfa from disk ='''+opendialog1.FileName+'''');
1066ExecSQL;
1067end;
1068except
1069ShowMessage('???′ê§°ü');
1070Exit;
1071end;
1072end;
1073Application.MessageBox('1§?2?ú£?êy?Y???′3é1|','ìáê?',MB_OK + MB_ICONINFORMATION);
1074end;
1075
1076
1077(9).查找局域网上的sqlserver报务器。
1078uses Comobj;
1079procedure TForm1.Button1Click(Sender: TObject);
1080var
1081SQLServer:Variant;
1082ServerList:Variant;
1083i,nServers:integer;
1084sRetValue:String;
1085begin
1086SQLServer := CreateOleObject('SQLDMO.Application');
1087ServerList:= SQLServer.ListAvailableSQLServers;
1088nServers:=ServerList.Count;
1089for i := 1 to nservers do
1090ListBox1.Items.Add(ServerList.Item(i));
1091SQLServer:=NULL;
1092serverList:=NULL;
1093end;
1094(10).窗体打开时的淡入效果。
1095procedure TForm1.FormCreate(Sender: TObject);
1096begin
1097AnimateWindow (Handle, 400, AW_CENTER);
1098end;
1099(11).动态创建窗体。
1100procedure TForm1.Button1Click(Sender: TObject);
1101begin
1102try
1103form2:=Tform2.Create(self);
1104form2.ShowModal;
1105finally
1106form2.Free;
1107end;
1108end;
1109procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
1110begin
1111action:=cafree;
1112end;
1113procedure TForm1.FormDestroy(Sender: TObject);
1114begin
1115form1:=nil;
1116end;
1117(12).复制文件。
1118procedure TForm1.Button1Click(Sender: TObject);
1119begin
1120try
1121copyfileA(pchar('C:\AAA.txt'),pchar('D:\AAA.txt'),false);
1122except
1123showmessage('sfdsdf');
1124end;
1125end;
1126(13).复制文件夹。
1127uses shellAPI;
1128procedure TForm1.Button1Click(Sender: TObject);
1129var
1130lpFileOp: TSHFileOpStruct;
1131begin
1132with lpFileOp do
1133begin
1134Wnd:=Self.Handle;
1135wfunc:=FO_COPY;
1136pFrom:=pchar('C:\AAA');
1137pTo:=pchar('D:\AAA');
1138fFlags:=FOF_ALLOWUNDO;
1139hNameMappings:=nil;
1140lpszProgressTitle:=nil;
1141fAnyOperationsAborted:=True;
1142end;
1143if SHFileOperation(lpFileOp)<>0 then
1144ShowMessage('删除失败');
1145end;
1146(14).改变Dbgrid的选定色。
1147procedure TForm1.DBGrid1DrawDataCell(Sender: TObject; const Rect: TRect;
1148Field: TField; State: TGridDrawState);
1149begin
1150if gdSelected in state then
1151SetBkColor(dbgrid1.canvas.handle,clgreen)
1152else
1153setbkcolor(dbgrid1.canvas.handle,clwhite);
1154dbgrid1.Canvas.TextRect(rect,0,0,field.AsString);
1155dbgrid1.Canvas.Textout(rect.Left,rect.Top,field.AsString);
1156end;
1157(15).检测系统是否已安装了ADO。
1158uses registry;
1159function Tform1.ADOInstalled:Boolean;
1160var
1161r:TRegistry;
1162s:string;
1163begin
1164r := TRegistry.create;
1165try
1166with r do
1167begin
1168RootKey := HKEY_CLASSES_ROOT;
1169OpenKey( '\ADODB.Connection\CurVer', false );
1170s := ReadString('');
1171if s <> '' then Result := True
1172else Result := False;
1173CloseKey;
1174end;
1175finally
1176r.free;
1177end;
1178end;
1179procedure TForm1.Button1Click(Sender: TObject);
1180begin
1181if ADOInstalled then showmessage('this computer has installed ADO');
1182end;
1183(16).取利主机的ip地址。
1184uses winsock;
1185procedure TForm1.Button1Click(Sender: TObject);
1186var
1187IP:string;
1188IPstr:String;
1189buffer:array[1..32] of char;
1190i:integer;
1191WSData:TWSAdata;
1192Host:PHostEnt;
1193begin
1194if WSAstartup(2,WSData)<>0 then
1195begin
1196showmessage('WS2_32.DLL3?ê??ˉê§°ü.');
1197exit;
1198end;
1199try
1200if GetHostname(@buffer[1],32)<>0 then
1201begin
1202showmessage('??óDμ?μ??÷?ú??.');
1203exit;
1204end;
1205except
1206showmessage('??óD3é1|·μ???÷?ú??');
1207exit;
1208end;
1209Host:=GetHostbyname(@buffer[1]);
1210if Host=nil then
1211begin
1212showmessage('IPμ??·?a??.');
1213exit;
1214end
1215else
1216begin
1217edit2.Text:=Host.h_name;
1218edit3.Text:=chr(host.h_addrtype+64);
1219for i:=1 to 4 do
1220begin
1221IP:=inttostr(ord(host.h_addr^[i-1]));
1222if i<4 then
1223ipstr:=ipstr+IP+'.'
1224else
1225edit1.Text:=ipstr+ip;
1226end;
1227end;
1228WSACleanup;
1229end;
1230(17).取得计算机名。
1231function tform1.get_name:string;
1232var ComputerName: PChar; size: DWord;
1233begin
1234GetMem(ComputerName,255);
1235size:=255;
1236if GetComputerName(ComputerName,size)=False then
1237result:=''
1238else
1239result:=ComputerName;
1240FreeMem(ComputerName);
1241end;
1242procedure TForm1.Button1Click(Sender: TObject);
1243begin
1244label1.Caption:=get_name;
1245end;
1246
1247
1248(18).取得硬盘序列号。
1249function tform1.GetHDSerialNumber: LongInt;
1250{$IFDEF WIN32}
1251var
1252pdw : pDWord;
1253mc, fl : dword;
1254{$ENDIF}
1255begin
1256{$IfDef WIN32}
1257New(pdw);
1258GetVolumeInformation('c:\',nil,0,pdw,mc,fl,nil,0);
1259Result := pdw^;
1260dispose(pdw);
1261{$ELSE}
1262Result := GetWinFlags;
1263{$ENDIF}
1264end;
1265procedure TForm1.Button1Click(Sender: TObject);
1266begin
1267edit1.Text:=inttostr(gethdserialnumber);
1268end;
1269(19).限定光标移动范围。
1270procedure TForm1.Button1Click(Sender: TObject);
1271var
1272rect1:trect;
1273begin
1274rect1:=button2.BoundsRect;
1275mapwindowpoints(handle,0,rect1,2);
1276clipcursor(@rect1);
1277end;
1278procedure TForm1.Button2Click(Sender: TObject);
1279var
1280screenrect:trect;
1281begin
1282screenrect:=rect(0,0,screen.Width,screen.Height);
1283clipcursor(@screenrect);
1284end;
1285(20).限制edit框只能输入数字。
1286procedure TForm1.Edit1KeyPress(Sender: TObject; var Key: Char);
1287begin
1288if not (key in ['0'..'9','.',#8]) then
1289begin
1290key:=#0;
1291Messagebeep(0);
1292end;
1293end;
1294(21).dbgrid中根据任一条件某一格变色。
1295procedure TForm_main.DBGridEh1DrawColumnCell(Sender: TObject;
1296const Rect: TRect; DataCol: Integer; Column: TColumnEh;
1297State: TGridDrawState);
1298begin
1299if (trim(DataModule1.ADOQuery1.FieldByName('dczt').AsString)='OK') then
1300begin
1301if datacol=6 then
1302begin
1303DbGrideh1.Canvas.Brush.Color:=clGradientActiveCaption;
1304DbGrideh1.DefaultDrawColumnCell(Rect,datacol,column,state);
1305end;
1306end;
1307end;
1308(22).打开word文件。
1309procedure TfjfsglForm.SpeedButton4Click(Sender: TObject);
1310var
1311MSWord: Variant;
1312str:string;
1313begin
1314if trim(DataModule1.adoquery27.fieldbyname('fjmc').asstring)<>'' then</e|e>