I am using a Treeview control on a Form.
The treeview allows users to choose different reports to be exported.
There is a root treenode, and children treenodes under it.
I need to make the root treenode's checkbox appear checked AND grayed if
there are some but not all of the children treenodes checked. It appears
that the Treenode class has a Checked property that I can set when I want
but I do not see how I can gray out the checkbox.
If anyone has an idea about how to achieve this, please let me know.