True disable of a check box in a DataGridView using DataGridViewCheckboxCell

Does anyone know of a way to disable a checkbox in a DataGridView using a DataGridViewCheckboxCell?

I can make it read only, and set the background color, but I can’t get the checkbox itself to appear disabled. Any thoughts开发者_如何学编程?

---

Guess you have to paint by yourself. Here is Microsoft's code sample for disabling buttons using the same technology.