C / C++ / MFC

Johann Gerell wrote:

It fails with a 0 return value if a numerical conversion is not possible.

Nemanja Trifunovic wrote:

I can't understand why people still use atof

long strtol( const char *nptr, char **endptr, int base );
long wcstol( const wchar_t *nptr, wchar_t **endptr, int base );

Johann Gerell wrote:

I personally use
long strtol( const char *nptr, char **endptr, int base );long wcstol( const wchar_t *nptr, wchar_t **endptr, int base );
with which a 0 return value can be checked against the endptr parameter to see if a conversion occurred or not.

mrby123 wrote:

how to detect (code)that s2 representing a numeber

mrby123 wrote:

whereas s1 a character string ?

long strtol( const char *nptr, char **endptr, int base );
long wcstol( const wchar_t *nptr, wchar_t **endptr, int base );

Joy Anne wrote:

How can I enable it after I click a event handler during the program executing? If I want to disable it again, how can I do it?

ON_UPDATE_COMMAND_UI(IDC_YOURCHECKBOX_ID, OnUpdateYourCheckbox)

jhwurmbach wrote:

Calling GetDlgItem is extremly bad style!

jhwurmbach wrote:

Well, my statement may have come across a bit too strong.

jhwurmbach wrote:

But I believe that, in an object oriented environment, ou should use the object oriented way to do something.

jhwurmbach wrote:

By using the ID_SOMETHING resource constants directly, you are breaching confidentiality of the inner workings of the control-class.

jhwurmbach wrote:

You are working 'across' the MFC mechanisms, which I view as a bad thing when you have decided to use MFC.