Enhancing standard WD ABAP Component!!!

Hi Experts,
I am enhancing some WD ABAP components by creating enhancement implementation. But in the enhancement implementation I am able to create new UI Elements, Views, Methods etc. But it do not allows me to change the Properties of preexisting standard UI elements and Methods like wdinit, wdmodifyview etc. But if I open the WD ABAP component and start working on the application in change mode out of the enhancement implementation it only warns me to make changes in the standard component if necessary and after that I can modify the standard UI Elements and methods. It only asks me for a transport request when I activate it.
Now what I want to know is:
Suppose I make changes out of the enhancement component as explained the way above would these changes remain intact even when we apply any enhancement pack to the system or not. If not then what is the way to make enhancements (not changes) in the Existing UI elements and methods like wdinit, wdexit etc. Please suggest.
Thanks and Regards,
Vaibhav Tiwari.

>you can enhance by getting in the enhancement mode ,in the method tab you will find two new columns called preexit and postexit for the method in that u can write ur own code.
Actually there is a third option as well called Overwrite Exit. This completely replaces the implementation of the standard with with your custom one. This can allow you greater control. Although it surrvives an upgrade as well, be careful as you will be bypassing any of the logic that SAP places into the method you are overriding.
In enhancement mode you can't change the property of UI elements, but you can remove them. Just right mouse click on the UI element in the UI element tree and choose Remove Element. It won't actually be deleted completely - just marked with a red X. You can then easily undo the deletion at any later point.

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