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(Delphi ActiveX) Generating Random ASCII StringsDemonstrates how to generate random us-ascii strings.
uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB; ... procedure TForm1.Button1Click(Sender: TObject); var chilkatGlob: TChilkatGlobal; success: Integer; fortuna: TChilkatPrng; bDigits: Integer; bLowercase: Integer; bUppercase: Integer; i: Integer; begin // All Chilkat classes can be unlocked at once at the beginning of a program // by calling UnlockBundle. It requires a Bundle unlock code. chilkatGlob := TChilkatGlobal.Create(Self); success := chilkatGlob.UnlockBundle('Anything for 30-day trial.'); if (success <> 1) then begin Memo1.Lines.Add(chilkatGlob.LastErrorText); Exit; end; fortuna := TChilkatPrng.Create(Self); // Generate random strings having only lowercase chars (a-z) // Disallow digits and uppercase and only allow lowercase bDigits := 0; bUppercase := 0; bLowercase := 1; Memo1.Lines.Add('-- only lowercase alpha (a-z)'); for i := 1 to 10 do begin // Generate 20-character strings. Memo1.Lines.Add(fortuna.RandomString(20,bDigits,bLowercase,bUppercase)); end; // Allow both lowercase and uppercase alpha chars bUppercase := 1; Memo1.Lines.Add('-- lower and uppercase alpha (a-zA-Z)'); for i := 1 to 10 do begin // Generate 20-character strings. Memo1.Lines.Add(fortuna.RandomString(20,bDigits,bLowercase,bUppercase)); end; // Allow digits (0-9) bDigits := 1; Memo1.Lines.Add('-- digits and lower/uppercase alpha (0-9a-zA-Z)'); for i := 1 to 10 do begin // Generate 20-character strings. Memo1.Lines.Add(fortuna.RandomString(20,bDigits,bLowercase,bUppercase)); end; // Allow only digits (0-9) bUppercase := 0; bLowercase := 0; Memo1.Lines.Add('-- only digits (0-9)'); for i := 1 to 10 do begin // Generate 20-character strings. Memo1.Lines.Add(fortuna.RandomString(20,bDigits,bLowercase,bUppercase)); end; end; |
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