Delphi DLL

Get a Substring by Char Index and Length

Demonstrates how to use the GetRange method to get a substring by index and length.

Note: This example demonstrates the GetRange method which was added in Chilkat v9.5.0.87.

Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, StringBuilder;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
sb: HCkStringBuilder;
removeFlag: Boolean;
result: PWideChar;

begin
success := False;

sb := CkStringBuilder_Create();

// Load a file that contains this string:  0123456789ABCDEF
success := CkStringBuilder_LoadFile(sb,'qa_data/txt/remove_chars.txt','utf-8');

// Return "56789A" from the string.
// if removeFlag is True, the returned string is also removed from the sb.
removeFlag := True;
result := CkStringBuilder__getRange(sb,5,6,removeFlag);

Memo1.Lines.Add(result);
Memo1.Lines.Add(CkStringBuilder__getAsString(sb));

// Output is: 
// 
// 56789A
// 01234BCDE

CkStringBuilder_Dispose(sb);

end;