switch class : IsAttached getter
Description
Returns a value that indicates whether the handler is attached to the event handling system.
Syntax
instance.IsAttached
Arguments
None
Return value
| Class | Description |
| bool | Whether the handler is attached to the event handling system. |
Sample code
Suppose you have the following class definition.
| 1: | class handle |
| 2: | open method void LCHandler(dictionary dic) |
| 3: | ... // event handler code. |
| 4: | endmethod |
| 5: | endclass |
Usage of the IsAttached getter is as follows.
| 1: | browser b = new browser(); |
| 2: | handle h = new handle(); |
| 3: | switch sw = b.LoadCompleted(h,"LCHandler(dictionary)"); // The handler is automatically attached. |
| 4: | bool att = sw.IsAttached; // "true" |
| 5: | sw.Detach(); // Detach the handler. |
| 6: | att = sw.IsAttach; // false; |
| 7: | sw.Attach(); // Re-attach the handler. |
| 8: | att = sw.IsAttach; // true; |
Notes
The return value is as follows.
If the instance is acquired via the handler allocation method, true is returned because the handler is automatically attached to the event handling system.
Returns false after calling the Detach() method.
Returns true after calling the Attach() method.
The implementation of event handling has been changed in Cooker ver 3.0.3. This getter was added as a result of that change.
Links for reference
None.