如何使用 wxFloatingPointValidator 过滤 wxTextCtrl？

Question

I have found a possible solution at Formatting wx.TextCtrl with numeric values only - float precision

But I am not able to use it in my program.

I used the header #include <wx/valnum.h>

and added the following code to my main.h

 wxFloatingPointValidator<double> _val(2,&_myValue,wxNUM_VAL_ZERO_AS_BLANK);

 _val.SetRange(0.,100.);     // set allowable range

But it is showing errors:

expected identifier before numeric constant

_val does not name a type

Answer 1

It's often a good idea to grep for the class you're trying to use in the samples subdirectory of wxWidgets. In this particular case you can find a working example of using it in samples/validate/validate.cpp , please have a look at it.

As for the error you're getting, it's really impossible to say what goes wrong as you don't show the complete code nor even say on which line does it happen.