#include <CtrlLib/CtrlLib.h>

class NumbersOnRed : public Display
{
public:
  static bool numberString(String s);
	void PaintBackground(Draw& w, const Rect& r, const Value& q,
	                     Color ink, Color paper, dword style) const;
	
};

bool NumbersOnRed::numberString(String s)
{
  if(s.GetCount() == 0)
    return false;
  
  int i = 0; 
  if(s[0] == '+' || s[0] == '-')
    i++;  
  
  while(i < s.GetCount() && s[i] >= '0' && s[i] <= '9')
    i++;
  
  return i == s.GetCount();
}

void NumbersOnRed::PaintBackground(Draw& w, const Rect& r, const Value& q,
	                               Color ink, Color paper, dword style) const
{
	if(IsNumber(q) || (IsString(q) && numberString(AsString(q))))
	  paper = Color(255, 150, 150);
	
	Display::PaintBackground(w, r, q, ink, paper, style);
}


GUI_APP_MAIN
{
  ArrayCtrl array;
  array.AddColumn("value").SetDisplay(Single<NumbersOnRed>());
  array.Add("test1");
  array.Add("2test");
  array.Add("3 test");
  array.Add("4");
  array.Add("test");
  array.Add("-99");
  TopWindow win;
	win.Zoomable().Sizeable();
	win.Add(array.SizePos());
	win.Run();
}