361Transparent Background of Custom Drawing Class

Usually common problems already have simple solution. Like that one: Problem You subclassed UIView, you want to do some custom drawing in drawRect, but no matter what you do or where you draw, the background of the view remains black.
- (void)drawRect:(CGRect)rect {
 // Drawing code
 CGContextRef context = UIGraphicsGetCurrentContext();
 CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1.0);
 CGContextFillEllipseInRect(context, rect);
Solution In the ViewController, which call the drawing class, add
myDrawingClass.opaque = NO;
– or even nicer. In the drawing class’ init function:
self.opaque = NO;
And not like that – adding “self.opaque = NO;” in the drawRect: function – CGContextClearRect(context, rect); – CGContextSetAlpha(context, 0.5f);

442Transparent Background in Safari 4.0 Enable Debug Menu in Safari 4.0: defaults write com.apple.Safari IncludeInternalDebugMenu 1 via http://trac.webkit.org/wiki/WebDevelopers Also, an interesing option is to modify the .nib file of Safari and insert a new menu: http://pointum.com/safari-tweaks.html