How to get a int value(number) as a Input from TextBox(Edit Control).

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I want to give numerical Input from Edit Box and Inside the code I want to read the value which I have given.

If I use getwindowText It's getting as a CString , but I want as a int.

Does anybody know ??

Posted 28-Oct-14 0:54am

Baaki

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Jochen Arndt · Accepted Answer · 2014-10-28T01:17:00

Solution 1

The C standard library provides two functions to convert strings to integers: atoi[^] and strtol[^].

Example:

C++

CString str = control.GetWindowText();
int n = _tstoi(str.GetString());

Posted 28-Oct-14 1:17am

Jochen Arndt

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Baaki 29-Oct-14 5:58am

Thanks a lot.

Aescleal · Accepted Answer · 2014-10-28T08:21:00

In addition to what Jochen said you might like to consider using std::stringstream or std::strstream to do the conversion. Despite being deprecated in 1998 [1] strstream is quite good at this sort of thing as you don't need to copy the data. Something like:

C++

int number = 0;
std::strstream( number_string.GetString() ) >> number;

where number_string is a CString works quite well.

[1] But it still hasn't been removed from the standard, probably 'cause people like me like it around for extracting data from fixed size buffers.