C# button style minesweeper

I am currently doing on classic minesweeper in c#. I want to support middle click like in basic minesweeper, which count mines around and if this number is equal to count of fields marked as mine, reveal rest of the field which are not marked as mine.

Since this I do not want button which is already revealed to be disabled, because it is still possible to click on this button to support that middle click functionality.

But I do want to set some property which almost looks like button is disabled, something like when you click on a button and hold.

Any ideas ? TY Peter