UIControl的API
@property(nonatomic,readonly)UIControlStatestate;控件的状态，指定为位掩码值。 @property(nonatomic,getter=isEnabled)BOOLenabled;一个布尔值，指示控件是否已启用。 @property(nonatomic,...
UIView的Touch事件UIControlEvents详解
首先，UIControlEvents有这个几种：UIControlEventTouchDown =1<< 0, //onalltouchdownsUIControlEventTouchDownRepeat&...