Negate mouse events.

Hello all,

is there a way to negate all mouse events for a control without setting
Enable to false. I want to make a derived comboBox that I can set Read-Only
so that the user can't change anything but the progam has to hold control of
it; changing backgroundcolor or what so ever.
For the keyboard input I can set KeyEventArgs.Handled=true but for the mouse
events I do not find such thing.
I want to prevent the DropDown part to open so that a user can't change the
Value of my combobox.

Greets,

Jean Paul