| Description |
The GetLastError function returns the value of the last failed Windows API call.
It is useful for many SysUtils routines, such as illustrated in the example.
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| Related commands |
| IOResult |
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Holds the return code of the last I/O operation |
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| Example code : Try to delete a non-existant file and report the error code |
// 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
SysUtils,
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);
begin
if DeleteFile('CanDeletMe.txt')
then ShowMessage('File deleted OK')
else ShowMessage('File not deleted, error code = '+
IntToStr(GetLastError));
end;
end.
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| Hide full unit code |
File not deleted, error code = 2
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