Thread: Double type

Hi

Do you know about a way how to work with (double) types in text controls...

iTotal is type (double), imagine it carries a value of 3.14159.

Code:

wsprintf(chTotal, "%d", (double)iTotal);
SetDlgItemText(hwndDlg, nControl, chTotal);

Using this code returns me "1413551940" even if i try

Code:

wsprintf(chTotal, "%d", (float)iTotal);
SetDlgItemText(hwndDlg, nControl, chTotal);

the same error ocures...

Only works if I request (int) value but that is not with decimal place. I am quite confused why does the programme return this?

Can you plase help with that somehow? THX

Originally Posted by Salem

Try %f instead of %d.
Reading the manual to check on the relationship between conversion formats and parameter types also works.

Yes I did check, but didnt find any sollution. The %f returns only character "f"

Originally Posted by Salem

What can I say, it looks like wsprintf() is another broken thing.

Use sprintf() to format your double as a string, then use wsprintf("%s") with that result.

Sorry I dont really understand. I tried a few ways how might it work but with no success. Can you write a little piece of code to show how does the sprintf() really work with further cooperation with wsprintf()?

You could use a stringstream to convert the double into a string; I had a program that required getting and displaying doubles, and I used stringstreams to convert between strings and the doubles. Here's the link, just use a double instead of int.

If you're not using C++ strings, you could try this, but I haven't tried it so I don't know if it would work with doubles.

Originally Posted by matsp

Code:

...
char buf[100];
wchar wbuf[100];
...
sprintf(buf, "%f", someDouble);
wsprintf(wbuf, "%s", buf);
...

I haven't tried it, so it may not work...

--
Mats

Ok thx now it works