[amibroker] Problem with Low-level graphics functions

[aajurg]

Hello I meet several problems with the low-level graphics functions

1/ First   Gfxrectangle(x1,y1,x2,y2)  y2 has not the good type ?So how to spy 
the variable's type ?
2/ second matter I wish to see all my sector's indicators on the screen .But 
the list has been cut to the right .
3/Probably I must use the status("pxwidth") function but I don't really 
understand what is a pixel and where are my coordinates x =0 and y = 0 on the 
screen ? What is the logic ?


b= Foreign("^FCHI","Close");  
//           ----------------------------------------------  2 nd step

GfxSelectFont( "Tahoma", 8 ); 

function drawbarre( textindicesectoriel,x1,y1,x2,y2)

{
bar =0 ;
GfxTextOut(textindicesectoriel,x1,y1);
GfxRectangle(x1,y1,x2,y2);
}

//           ----------------------------------------------  1 st step


  stockname = Name();
  sectorname = MarketID();   
  listdestocks = CategoryGetSymbols( categoryMarket, sectorname ) ;   
  
  nbstock = 0 ;
 
  x1= 10;
  y1 = 90;

for( i = 0; ( sym = StrExtract( listdestocks, i ) ) != ""; i++ )  
  {
   nbstock = i ;
   action = Foreign( sym, "Close");    
   Rapport = action/b;  
   basepricedetest = MA(Rapport,13);  
   Courbemansfield = ((Rapport/basepricedetest));

   x1 = x1 + 60 ;
   x2 = x1 + 10 ;
   y2 = Courbemansfield;
   drawbarre(sym,x1,y1,x2,y2);

  }
  nbstock++ ;  
 
GfxTextOut("To select the sector ", 0, 0 );