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String and Integer

Posted on 2000-03-20
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Last Modified: 2010-04-04
I am very new to delphi, and I am kinda confused abotu this...below is my code.

procedure TForm1.Button1Click(Sender: TObject);
var
i: integer;
s: string;
begin
button2.Enabled := true;
for i := 0 to 999999 do
begin
s := edit1.text;
s := s + 1;
edit1.text := s;
sleep(500);
end;
end;

end.


and I get an error about converting strings and crap like that, can some one fix this code to get it to work. Thanks
0
Comment
Question by:BrianG14
  • 4
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10 Comments
 
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Accepted Solution

by:
Indefrei earned 20 total points
ID: 2637738
Try to change to this

s: Integer; // see here
begin
                   button2.Enabled := true;
                   for i := 0 to 999999 do
                   begin
                   s := StrToInt(edit1.text); // Hopefully Text is an Integer !
                   s := s + 1;
                   edit1.text := IntToStr(s);
Regards
Indi
0
 
LVL 1

Expert Comment

by:Indefrei
ID: 2637750
Ps.
Sleep(500)
Sounds, as if you should use a Timer instead
0
 

Author Comment

by:BrianG14
ID: 2637752
what happens if the text is not a int...and it tries to convert a string to a int and its really a string...?
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LVL 1

Expert Comment

by:Indefrei
ID: 2637769
Well,
I think then you get an unpredictable Number
so, you better take care, that the input is a number
0
 

Expert Comment

by:jan_yt
ID: 2637780
You can try this. Think you want a "counter"? Not '1111.....'?

procedure TForm1.click(Sender: TObject);
var
{Changed this to longint }
 i : longint;
 s: string;

begin
 { Just to be sure it don't have a default text like "edit1.text" }
 edit1.text := '0';

for i := 0 to 999999 do
begin
 s := edit1.text;
{ Convert the text to an integer, add 1 and convert back to string }
 s := inttostr(strtoint (s) + 1);
 edit1.text := s;
{ If you want to see your counter you should use a refresh }
 form1.Refresh;
 sleep(500);
end;
0
 

Author Comment

by:BrianG14
ID: 2638364
is there any way to get the current x, y of the mouse and is there any way to change the x, y of the mouse. Thanks!
0
 

Expert Comment

by:frangers99
ID: 2638645
What indi said is correct, but i'll try and make this clearer for you.

Edit box fields only accept strings. As you probably know strings are words etc. If you want to work with integers you need to convert them into a integer ie.

var
number:integer;

number:=strtoint(edit1.text);

then to convert the number back to an editbox after you have played around with it. do...

edit1.text:= inttostr (number);

hope this will help you.

Andrew
0
 
LVL 1

Expert Comment

by:Indefrei
ID: 2642166
Yes, BrianG14
there are ways to get the current x, y of the mouse and there is a way to change the x,y of the mouse
but what do you expect for just poor 5 pts
Indi
0
 

Author Comment

by:BrianG14
ID: 2647743
well, I have 200 points...could those change your mind...if I get a good anwser maybe you could get them :D
0
 

Expert Comment

by:frangers99
ID: 2647950
why don't you give your five points to somebody and then open the xy as a new question.
0

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