is_numeric control number

[sk.Silvia]

hi there
is there a simple way to control if input-string is a real number (like in php is_numeric) (so i dont have to go by each char, count the dots and ask if char is in 0-9...)

smt like

Delphi-Quellcode:

if ReturnedError(strtofloat(input)) then ShowMessage('you dont entered a valid real number');

[Thorben77]

Hi Silvia,
you may have a look at the TryStrToFloat function :wink: .

[DGL-luke]

Delphi-Quellcode:

if not trystrtofloat(somestring,somefloat) then
  Showmessage('Doh!');

:)

// I knew i couldn't be the first one...