I am not quite sure what exactly you want to achieve but I suggest to test the following setups:
- Set the header pane's Locked property to true and also set its Scrolling=None - this will prevent the pane from changing its size and it also will not generate scrollbars.
- You can use an external element for header, e.g a TABLE or DIV element - if your splitter should occupy 100% of the available area except for this external header, you can easily force it automatically calculate its size by setting its Width and Height to 100% and the HeightOffset property to the fixed height of the header.
In case none of the above meets your requirements, please provide more detailed explanations
the Telerik team
Check out Telerik Trainer
, the state of the art learning tool for Telerik products.