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copied!<p>You can make use of the custom states in a subclass of UIControl. </p> <ul> <li>Create a variable called <code>customState</code> in which you will manage your custom states. </li> <li>If you need to set a state, do your flag operations against this variable, and call <code>[self stateWasUpdated]</code>. </li> <li>Override the <code>state</code> property to return <code>[super state]</code> bitwise OR'd against your <code>customState</code></li> <li>Override the <code>enabled</code>, <code>selected</code> and <code>highlighted</code> setters so that they call <code>[self stateWasUpdated]</code>. This will allow you to respond to any changes in state, not just changes to <code>customState</code> </li> <li>Implement <code>stateWasUpdated</code> with logic to respond to changes in state</li> </ul> <p>In the header:</p> <pre><code>#define kUIControlStateCustomState (1 << 16) @interface MyControl : UIControl { UIControlState customState; } </code></pre> <p>In the implementation:</p> <pre><code>@implementation MyControl -(void)setCustomState { customState |= kUIControlStateCustomState; [self stateWasUpdated]; } -(void)unsetCustomState { customState &= ~kUIControlStateCustomState; [self stateWasUpdated]; } - (UIControlState)state { return [super state] | customState; } - (void)setSelected:(BOOL)newSelected { [super setSelected:newSelected]; [self stateWasUpdated]; } - (void)setHighlighted:(BOOL)newHighlighted { [super setHighlighted:newHighlighted]; [self stateWasUpdated]; } - (void)setEnabled:(BOOL)newEnabled { [super setEnabled:newEnabled]; [self stateWasUpdated]; } - (void)stateWasUpdated { // Add your custom code here to respond to the change in state } @end </code></pre>

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