>I have tried it but it does not work properly.
>The reference to the dropdown form is in the combobox itself.
>when i place it on a dataentry form and run the form is created.
>but when i release the form it is not not release.
>where should i place the code to release the dropdown window.
>Rajesh

It should be referenced as a property of the caller form. Then in the caller form's release (or .destroy), release this little form first, before the caller form exits.