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delphiÆô¶¯·þÎñÍ£Ö¹·þÎñн¨·þÎñµÄ·½·¨

 
unit Servicescontrol;
   
interface  
uses Windows,Messages,SysUtils,Winsvc,Dialogs;
   
function StartServices(Const SvrName:String):Boolean;
function StopServices(Const SvrName:String):Boolean;
function QueryServiceStatu(Const SvrName:   String):String;
function CreateServices(Const SvrName,FilePath:String):Boolean;  
function DeleteServices(Const SvrName: String):Boolean;  
   
implementation  
   
//¿ªÆô·þÎñ  
function StartServices(Const   SvrName:   String):   Boolean;
var  
      a,b:SC_HANDLE;  
        c:PChar;  
begin  
        Result:=False;  
   
        a:=OpenSCManager(nil,nil,SC_MANAGER_ALL_ACCESS);  
   
        if a <=0 then Exit;  
   
        b:=OpenService(a,PChar(SvrName),SERVICE_ALL_ACCESS);  
   
        if b <=0 then Exit;  
            try  
              Result:=StartService(b,0,c);  
              CloseServiceHandle(b);  
              CloseServiceHandle(a);  
        except  
              CloseServiceHandle(b);  
    


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Delphi Éè¼ÆÄ£Ê½£º¡¶HeadFirstÉè¼ÆÄ£Ê½¡·Delphi7´úÂë

1. ÃüÁîµÄ½ÓÊÜÕß
unit uReceiveObject;
interface
type
TLight = class(TObject)
public
procedure Open;
procedure Off;
end;
TGarageDoor = class(TObject)
public
procedure Up;
procedure Down;
procedure Stop;
procedure LightOn;
procedure LightOff;
end; ......

DelphiÖУ¢Á÷£¢µÄÀûÓÃ

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µÄ¹¤¾ß¡£ÔÚÁ÷ÖУ¬¶¨ÒåÁËһЩ´¦ÀíÊý¾ÝµÄ»ù±¾²Ù×÷£¬Èç¶ÁÈ¡Êý¾Ý£¬Ð´ÈëÊý¾ÝµÈ£¬
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Á÷µÄ²Ù×÷·Ç³£ÊìÁ·£¬ÔÚ³ ......

Delphi ShlÓëShr ÒÆÎ»²Ù×÷½éÉÜ

 ¸ñʽ£º²Ù×÷Êý Shl/Shr ÒÆ¶¯Î»Êý
˵Ã÷£º²Ù×÷ÊýÓë·µ»ØÖµ¶¼ÊÇÕûÊý
Àý×Ó£º16(10) = 10000(2)
     16(10) Shr 1 = 10000(2) Shr 1 = 1000(2) = 8(10)
     16(10) Shr 2 = 10000(2) Shr 2 = 100(2) = 4(10)
˵Ã÷£ºÒ»¸öÕûÊý(I)°´Î»×óÒÆÒ»Î»£¬Ï൱ÓÚ°ÑËü³ËÒÔ2£¬¼´ I * 2
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DelphiÏÂÉú³ÉMapÎļþ·½·¨£¬Ãâɱ»òµ÷ÊÔÓõÄ

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×òÍí¸ÕºÃÓÖ¿´µ½ÁË ËùÒÔ¾ÍÊÔÁËÒ»ÏÂDELPHIµÄ£¬Óë´ó¼Ò¹²Ïí ^_^
ʲôÊÇ MAP Îļþ£¿¼òµ¥µØ½²£¬ MAP ÎļþÊdzÌÐòµÄÈ«¾Ö·ûºÅ¡¢Ô´ÎļþºÍ´úÂëÐкÅÐÅÏ¢µÄΨһµÄÎı¾±íʾ·½·¨£¬Ëü¿ÉÒÔÔÚÈκεط½¡¢ÈκÎʱºòʹÓ㬲»ÐèÒªÓжîÍâµÄ³ÌÐò½øÐÐÖ§³Ö¡£¶øÇÒ£¬ÕâÊÇΨһÄÜÕÒ³ö³Ì ......

Using COM+ object pooling with Delphi 6

 URL: http://edn.embarcadero.com/article/27568
Abstract: Delphi 6 introduces support for COM+ object pooling, which can provide significant performance improvements under some circumstances. We take a look at Delphi 6s object pooling support. By Vincent Parrett.
Typically, when a client appl ......
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