Give us more details, it seems to be a problem with an external compilation and not a C# problem.

If the dialog is modal, it will get destroyed when you click OK or Cancel. "Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Sure. Do a search and find some code that implements a custom list control. Look through the source until you find code that alters the height of each item. Copy this code and apply appropriately. Something else you may consider: LPNMCUSTOMDRAW & WM_NOTIFY