{
Das akzeptierte Format von StrToDate und StrToTime wird in den globalen Variablen
DateSeparator und ShortDateFormat definiert.
The accepted format of StrToDate and StrToTime is defined in the global
variables DateSeparator and ShortDateFormat
}
function IsDate(str: string): Boolean;
var
dt: TDateTime;
begin
Result := True;
try
dt := StrToDate(str);
except
Result := False;
end;
end;
function IsTime(str: string): Boolean;
var
dt: TDateTime;
begin
Result := True;
try
dt := StrToTime(str);
except
Result := False;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
if IsDate('24.07.2001') then
begin
ShowMessage('Yes, it is a date.');
end;
if IsTime('16:23') then
begin
ShowMessage('Yes, it is a time.');
end;
end;