| Description |
The ShortString type holds sequences of characters up to 255 in length.
Strings can be assigned from other strings, from functions that return a string, and with concatenations as in the sample code.
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| Notes |
ShortStrings are indexed with 1 for the first character (arrays start with 0 for the first element).
A String type is treated as a ShortString when the $LongStrings compiler directive is set to Off
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| Related commands |
| $LongStrings |
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Treat string types as AnsiString or ShortString |
| AnsiCompareStr |
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Compare two strings for equality |
| AnsiLowerCase |
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Change upper case characters in a string to lower case |
| AnsiPos |
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Find the position of one string in another |
| AnsiString |
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A data type that holds a string of AnsiChars |
| AnsiUpperCase |
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Change lower case characters in a string to upper case |
| Concat |
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Concatenates one or more strings into one string |
| Copy |
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Create a copy of part of a string or an array |
| Delete |
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Delete a section of characters from a string |
| Length |
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Return the number of elements in an array or string |
| Move |
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Copy bytes of data from a source to a destination |
| PShortString |
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A pointer to an ShortString value |
| SetLength |
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Changes the size of a string, or the size(s) of an array |
| String |
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A data type that holds a string of characters |
| WideString |
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A data type that holds a string of WideChars |
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| Example code : Assigning to a ShortString and a fixed length string |
// Full Unit code.
// -----------------------------------------------------------
// You must store this code in a unit called Unit1 with a form
// called Form1 that has an OnCreate event called FormCreate.
unit Unit1;
interface
uses
// The System unit does not need to be defined
Forms, Dialogs;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm} // Include form definitions
procedure TForm1.FormCreate(Sender: TObject);
var
smallString : string[2];
smallishString : ShortString;
begin
// Assign to our small string
smallString := 'ABCD';
ShowMessageFmt('smallString size = %d',[SizeOf(smallString)]);
ShowMessageFmt('smallString = %s',[smallString]);
// Assign to our slightly bigger string
smallishString := 'ABCD';
ShowMessageFmt('smallishString size = %d',[SizeOf(smallishString)]);
ShowMessageFmt('smallishString = %s',[smallishString]);
end;
end.
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| Hide full unit code |
smallString size = 3
smallString = AB
smallishString size = 256
smallishString = ABCD
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