Hello Alvin,
Thank you for your question.
There is no way to specify the width or height of the tooltip. However, you can modify its displaying location and also limit the length of its text on the
ToolTipTextNeeded event as it is shown in the following code snippet:
I hope you find this helpful. If you have any additional questions, do not hesitate to write back.
Greetings,
Ivan Todorov
the Telerik team