Draw underlined / strikethrough text ( MULTILINE STRING )?

I have to draw underlined-multiline text with all types of text alignment. I have searched on forums and got some results like:

http://davidjhinson.wordpress.com/2009/11/26/underline-text-on-the-iphone/

http://forums.macrumors.com/showthread.php?t=561572

But all draw text for single line only. while i have multi-line text. The situation even become worse when the text alignment is centered. I searched and found that in iphone-sdk-3.2 there are some core-text attributes for underlining a text but no idea how to use that. Besides if I use these my problem would not be solved fully.

As I have to draw strikethrough text also.

Anybody having idea about this please help.

What about this. This works good for me what you all think, if this needs some optimisation?

CGContextSetFillColorWithColor(c, [[UIColor blackColor] CGColor]);          //THE TEXT COLOR OF THE STRING TO BE DRAWN.

            UIFont *fontName = [UIFont fontWithStyle:@"Arial-BoldMT" andFontSize:13];

            if(FontOverLayUnderLine || FontOverLayStrikeThrough){

                NSArray *stringsArray = [textString componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];
                CGContextSetStrokeColorWithColor(c, [appDel.textDisplayStyle.fillColor CGColor]);
                CGContextSetLineWidth(c, 1.0);
                CGSize stringSize;
                NSString *stringToDraw;
                for (int i = 0 ; i < [stringsArray count]; i++) {

                    stringToDraw = [stringsArray objectAtIndex:i];

                    if(![[stringToDraw stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] isEqualToString:@""]){

                        stringSize = [stringToDraw sizeWithFont:fontName forWidth:rect.size.width lineBreakMode:UILineBreakModeCharacterWrap];

                        float x = rect.origin.x + (rect.size.width-stringSize.width)/2 + 7;
                        float y = 4 + stringSize.height*i;

                        [stringToDraw drawAtPoint:CGPointMake(x, y) forWidth:stringSize.width withFont:fontName lineBreakMode:UILineBreakModeCharacterWrap];

                        if(FontOverLayUnderLine)
                            y += (1.05) * stringSize.height*i +1;
                        else
                            y += (stringSize.height/2)+1;

                        CGContextMoveToPoint(c, x, y);
                        CGContextAddLineToPoint(c, x+stringSize.width, y);
                        CGContextStrokePath(c);
                    }
                }

            }

Hope this works good for all.

Thanks,

Madhup

Use Core Text.