how fill color in rect ?

hi in iOS SDK when draw a rectangle its without with any color
how i can draw rectangle with color ?


i know i can use Page_setAnnotFillColor();
but it fill with alpha =1
where i can change alpha ?
iven.comuv.com/up/3992e9a68c5a.png


Update :
i add these Line in end of -(void)draw:(CGContextRef)context
method

CGContextStrokeRect(context, rect1);
CGContextSetFillColorWithColor(context, [[UIColor colorWithRed:0.0/255.0 green:0.0/255.0 blue:255.0/255 alpha:0.3]CGColor]);
CGContextFillRect(context, rect1);
CGContextAddRect(context, rect1);


after plus these code result Like :
neci.freeiz.com/up/3c59e5f8b3e9.png

but after press done button [for apply draw ] ---> -(void)vRectEnd method
all of thing going to back without any fill color

for 50% black color:
Page_setAnnotFillColor( ..., 0x80000000 );//black with 50% alpha value.

it's not work for rect

only for highlight work

please help us

anyyy sulotion ?

thank you but i want to my rect fill with a color with a little change in my code!
how i can implement fill rect color ? [where use this method ] ?

please modify codes in PDFView: to: