Delphi ¹Ø¼ü×ÖÏê½â
absolute
//ËüʹµÃÄãÄܹ»´´½¨Ò»¸öбäÁ¿, ²¢ÇҸñäÁ¿µÄÆðʼµØÖ·ÓëÁíÒ»¸ö±äÁ¿Ïàͬ.
var
Str: string[32];
StrLen: Byte absolute Str;
//Õâ¸öÉùÃ÷Ö¸¶¨Á˱äÁ¿StrLenÆðʼµØÖ·ÓëStrÏàͬ.
//ÓÉÓÚ×Ö·û´®µÄµÚ0¸öλÖñ£´æÁË×Ö·û´®µÄ³¤¶È, ËùÒÔStrLenµÄÖµ¼´×Ö·û´®³¤¶È.
begin
Str := 'abc';
Edit1.Text := IntToStr(StrLen);
end;
abstract
//ËüÔÊÐíÄã´´½¨³éÏóµÄ·½·¨, °üÀ¨ÓгéÏó·½·¨µÄÀà³ÆΪ³éÏóÀà.
//Abstract¹Ø¼ü×Ö±ØÐëÓëVirtual»òDynamic¹Ø¼ü×ÖͬʱʹÓÃ, ÒòΪ³éÏó·½·¨±ØÐë±»¸²¸ÇʽʵÏÖ.
//³éÏóÀ಻ÄÜʵÀý»¯, ³éÏó·½·¨²»ÄÜ°üº¬·½·¨Ìå.
type
TDemo = class
private
protected
procedure X; virtual; abstract;
public
constructor Create;
destructor Destroy; override;
published
end;
and
//Ò»¡¢±íʾÂß¼Óë
if (a>0) and (b>0) then
//¶þ¡¢±íʾλÔËËã
var
a,b,c: Integer;
begin
c := (a and b);
end;
//ʹÓÃAnd±íʾÂ߼ʱ, And×óÓҵıí´ïʽ±ØÐëÓÃСÀ¨ºÅÀ¨Æð, ÒÔ±ÜÃâÒÔÉúÌõ¼þµÄ³åÍ».
//ÀýÈç:
if a>0 and b>0 then
//±àÒëÆ÷¿ÉÄÜ»áÀí½âΪ:
if a>(0 and b)>0 then
//»ò:
if (a>0) and (b>0) then
//µ«ÊÇʵ¼Ê±àÒëʱ, ±àÒëÆ÷»á²úÉúÒ»¸ö³åÍ», ±¨¸æ´íÎó.
//²¢ÇÒµÚÒ»ÖÖ¿ÉÄÜ°üº¬ÁËa>b>cµÄÐÎʽ, ÕâÔÚDelphiÖв»±»Ö§³Ö.
//ËùÒÔʹÓÃAndÔËËã·ûʱ±ØÐëʹÓÃÀ¨ºÅ, ÒÔÇø·Ö×óÓÒµÄÌõ¼þ.
//±íʾλÔËËãʱҲ±ØÐë¼ÓÉÏÀ¨ºÅ, ½«AndÒÔ¼°×óÓÒ²ÎÊýÀ¨Æð.
array
//ArrayÓÃÓÚ±íʾÊý×é, ÈκεĶÔÏó¶¼Äܱ»ÉùÃ÷³ÉÊý×é.Êý×é·ÖΪ¾²Ì¬ºÍ¶¯Ì¬µÄ£²ÖÖ.
//¾²Ì¬Êý×é
var
Arr1: array [1..10] of Integer;
//¶¯Ì¬Êý×é, ÓÉÓÚÉùÃ÷ʱ²»ÖªÆäÔªËظöÊý, ËùÒÔ±ØÐëÔÚºóÆÚÓÃSetLength·½·¨ÉèÖÃÊý×éµÄ´óС
var
Arr2: array of Integer;
//Êý×é×÷Ϊ²ÎÊýʱ, ²»ÄÜ´«ÈëÊý×éµÄ´óС, Ö»ÄÜ´«ÈëÊý×éÃû, È»ºóÓÃLength·½·¨»ñÈ¡Êý×éµÄÔªËظöÊý
function X(A: array of Integer): Integer;
var
i: Integer;
begin
Result := 0;
for i := 0 to Length(A)-1 do
Result := Result + A[i];
end;
as
//AsÓÃÓÚ½«Ò»¸ö¶ÔÏóת»»ÎªÁíÒ»¸ö¶ÔÏó
procedure BtnClick(Sender:TObject);
begin
(Sender as TButton).Caption := 'Clicked';
end;
//¶ÔÓÚ¶ÔÏóÌî³ä½Ó¿ÚµÄת»», ±ØÐëÓÃAs½øÐÐ
(HTTPRIO as IExp).GetConnection;
//As²»ÄÜÓÃÓÚÊý¾ÝÀàÐ͵Äת»», ÏÂÃæµÄ´úÂë
Ïà¹ØÎĵµ£º
ÀûÓÃWindows APIº¯ÊýWritePrivateProfileString ºÍGetPrivateProfileString¿É¶Ô.INIÎļþ½øÐжÁд²Ù×÷¡£Æäʵ£¬¶Ô.INIÎļþµÄ¶ÁдÍêÈ«¿ÉÒÔÀûÓÃDelphiµÄÄÚÖú¯ÊýÀ´ÊµÏÖ¡£ÏÂÃæ¾Í½éÉÜһЩ¶Ô.INIÎļþ¶ÁдʱÏà¹ØµÄÀ༰ÆäÊôÐÔ·½·¨¡£
1¡¢TIniFile¶ÔÏó
ÒÔDelphiÖУ¬¶¨ÒåÁËÒ»¸öTIniFile¶ÔÏ󣬽«.INIÎļþ·â×°ÔÚÆäÖУ¬²¢ÌṩһЩ·½·¨£ ......
ÓÐʱÐèҪʹÓÃ͸Ã÷¿Ø¼þÓÃÓÚ²¶»ñÊó±êÏûÏ¢
1.µ÷ÓÃWindows2000,xpеÄAPIº¯ÊýʵÏÖÕâÒ»¹¦ÄܵĹý³Ì¡£Ê¹ÓÃSetLayeredWindowAttributes
2.Ö±½ÓÉèÖÿؼþµÄalphablend,alphablendvalue£¬¼ä½Óµ÷ÓÃÉÏÊöapi.
3.ʹÓÃTStaticText¿Ø¼þ
procedure WMCtrlColor(var Message: TWMCtlColor); message WM_CTLCOLOR;
procedure TForm3.WMCtr ......
Ãû³Æ ÀàÐÍ ËµÃ÷
abort º¯Êý ÒýÆð·ÅÆúµÄÒâÍâ´¦Àí
abs º¯Êý ¾ø¶ÔÖµº¯Êý
addexitproc º¯Êý ½«Ò»¹ý³ÌÌí¼Óµ½ÔËÐÐʱ¿âµÄ½áÊø¹ý³Ì±íÖÐ
addr º¯Êý ·µ»ØÖ¸¶¨¶ÔÏóµÄµØÖ·
adjustlinebreaks º¯Êý ½«¸ø¶¨×Ö·û´®µÄÐзָô·ûµ÷ÕûΪcr/lfÐòÁÐ
align Êô ......
Ò»¡¢ÀàºÍ¶ÔÏó
ÀàÊǶÔÏóµÄÀàÐÍ£¬ÊÇ´´½¨¶ÔÏóµÄÄ£°å¡£Ò»¸öÀà¿ÉÒÔ´´½¨¶à¸ö¶ÔÏ󣬶øÒ»¸ö¶ÔÏó×ÜÊÇÊôÓÚij¸öÀà¡£Àà¾ßÓÐÄÚ²¿µÄÊôÐÔ£¨×´Ì¬£©ºÍÐÐΪ£¨²Ù×÷£©¡£
¶ÔÏóÊÇÀàµÄʵÀý£¬¾ßÓÐÇø±ðÓÚͬÀàÆäËû¶ÔÏóµÄÊôÐÔ¼¯ºÏ¡£
¶ÔÏóµÄÉùÃ÷´æ·ÅÓÚ¶ÑÕ»£¬¶ÔÏóµÄÒýÓôæ·ÅÓڶѡ£
¶þ¡¢ÀàµÄ·½·¨·ÖÀà
1¡¢ ÆÕͨ·½·¨
²»¼ÓÈκÎÐÞÊε ......
·þÎñ¶Ë£ºÌí¼ÓADOConnection£¬ADOQuery1£¬ADOQuery2¡£ÉèÖÃADOQuery1ΪÖ÷±í£¬ADOQuery2Ϊ´Ó±í¡£(ͨ¹ý ADOQuery2.SQL.Text:= 'select * from ´Ó±í where FKID=:Ö÷±íPKID'ÉèÖÃ)¡£Ìí¼ÓDataSetProvider1ºÍDataSetProvider2·Ö±ðÁ¬½Óµ½ADOQuery1ºÍADOQuery2¡£
¿Í»§¶Ë£ºÌí¼ÓClientDataSet1£¬ClientDataSet2¡£ClientDataS ......