koobas.hobune.stream
Allow specific characters on GUI textField?
Hello,
I am looking on a way to prevent user from typing letters or any other special character (%^&@!$) to a GUI text field. Only numbers.
I tried a lot of ways I read on forums but NONE of them work. Any help?
function OnGUI () {
value1_string = GUI.TextField (Rect (10, 10, 200, 20), value1_string, 25);
value1 = int.Parse(value1_string);
value2_string = GUI.TextField (Rect (10, 30, 200, 20), value2_string, 25);
value2 = int.Parse(value2_string);
}
Best Answer
Here is a way to do it. I'm not sure if it is the best way:
#pragma strict
var value1_string : String;
var value1 : int;
function OnGUI () {
var e = Event.current;
if ((e.type == EventType.KeyDown) && !char.IsDigit(e.character))
e.type = EventType.Used;
value1_string = GUI.TextField (Rect (10, 10, 200, 20), value1_string, 25);
int.TryParse(value1_string, value1);
}
I've gone to int.TryParse() which does not generate an exception when it fails. Currently this code is generating multiple calls to TryParse() each frame...even when the string is empty. I don't know what your conditions are for processing the number.
Toss if(e.type==EventType.$$anonymous$$eyDown) in front of the TryParse?
$$anonymous$$y brute force general-purpose method is to allow them to type whatever, then run something to remove unwanted chars.
