Hi,
As your testing result shows, it is a member function which can mask what users can enter on Dialog control. The syntax is
BOOL Edit::SetContentFilter(int nFilter)
The Parameter nFilter could be
CF_DOUBLE, //allow unsigned numeric only
CF_INTEGER, //allow unsigned integer only
CF_SIGNED_DOUBLE, //allow signed numeric only
CF_SIGNED_INTEGER, //allow signed integer only
Cecilia
OriginLab Corp.