Convert
Using Convert to alter EditField for editing binary numbers
main.cpp
#include <CtrlLib/CtrlLib.h>
using namespace Upp;
struct ConvertBin : Convert {
virtual Value Format(const Value& q) const
{
return FormatIntBase(q, 2, 0, 0, 0);
}
virtual Value Scan(const Value& text) const
{
String txt = text;
int r = 0;
for(const char *s = txt; *s; s++)
if(*s == '1')
r = (r << 1) | 1;
else
if(*s == '0')
r <<= 1;
return r;
}
virtual int Filter(int chr) const
{
return chr == '0' || chr == '1' ? chr : 0;
}
};
struct App : TopWindow {
EditField bin;
EditInt dec;
void BinChanged() { dec <<= ~bin; }
void DecChanged() { bin <<= ~dec; }
typedef App CLASSNAME;
App()
{
SetRect(0, 0, 200, 50);
bin.SetConvert(Single<ConvertBin>());
Add(bin.HSizePos().TopPos(0, Ctrl::STDSIZE));
Add(dec.HSizePos().BottomPos(0, Ctrl::STDSIZE));
bin <<= THISBACK(BinChanged);
dec <<= THISBACK(DecChanged);
}
};
GUI_APP_MAIN
{
App().Run();
}
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