Thanks for the most precise answer. There is one last problem i.e my list box also contains integer values which doesn't gets droped on the list box. The "DataFormat" has nothing which can check that the data is integer. What should i do.

Ah, I see it clearly now, you will have to trap some events for the scrolling. Looking through the documentation it might be easier to create a composite control which has a listbox, and a couple of buttons for going up and down a page. This would also be more intuitive if there is a delay in the loading. Ed

hi Ravi, plz tell me which method or event of the listbox will going to help me in checking the top index periodically. Hoping to get the reply soon. I will also look at the link you have mentioned. if in case it did provide me the desired result i will post the message for confirmation. Thanks.

Can you send me soure code of this programing ?( Visual c++ 6.0) I'm doing a project about"capturing video from webcam" Thanks aloha

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