iphone - Add drawing objects to UIWebView -

basic question - have uiwebview pdf document loaded.

how can add drawing objects (eg. symbol) uiwebview's scrollview layer.

cheers

try this.

- (bool)application:(uiapplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions {          [self.window makekeyandvisible];     [web loadrequest:[nsurlrequest requestwithurl:[nsurl urlwithstring:@"http://tiny4.org"]]];     uiscrollview* scrollview =  [[web subviews] objectatindex:0];     web.backgroundcolor = [uicolor clearcolor];     scrollview.backgroundcolor = [uicolor clearcolor];     uilabel* label = [[uilabel alloc] initwithframe:cgrectmake(0, 40, 100, 20)];     label.text = @"testasdasdasda";     [window addsubview:label];     [window bringsubviewtofront:web]; }