When my window with ribbon starts, the ribbon tabs are good to scroll by mouse wheel.
But, after a few operations in the window, the tabs cannot be scrolled by mouse any more, even if I cancel all the focuses on the controls in my window, even if I click the tabs again and again.
How can I keep the tabs always scrolled by mouse? Did I miss something to set the tabs?
thanks!
Now I can be pretty sure that it happens when an UltraPrintPreviewDialog.ShowDialog is called.
Please help me with this issue. Thanks!