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procedure TfrmAbout.btnVersionClick(Sender: TObject);
var
  SqliteDB:TSQLiteDatabase;
begin
  SqliteDB:=TSQLiteDatabase.Create('');
  showmessage('Sqlite dll version:'+SqliteDb.version);
  SqliteDB.Free;
end;
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function isNumeric(strText: WideString): Boolean;
var
  s: string;
  i, l, p: Integer;
begin
  Result := False;
  l := Length(strText);
  if l = 0 then Exit;
  s := '';
  for i:=1 to l do
  ......

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var
  s:string;
  p:pchar;
  a:array[1..20] of char;
ÄÇôÈýÕßÖ®¼äµÄת»»ÈçÏ£º
1¡¢×Ö·û´®µ½PChar
    p:=PChar(s);
2¡¢PCharµ½×Ö·û´®
    s:=p;
3¡¢PCharµ½×Ö·ûÊý×é
    StrCopy(@a,p);
4¡¢×Ö·ûÊý×éµ½PChar
   ......

DelphiÖе÷ÓÃWindows×Ô´øµÄͼƬºÍ´«Õæä¯ÀÀÆ÷

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unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls,ShellAPI;
type
TForm1 = class(TFo ......
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