http://bugs.winehq.org/show_bug.cgi?id=7280
------- Additional Comments From fpga@pacbell.net 2007-30-01 13:03 ------- And the reason this happens is something like: SetFocus on the edit window triggers a KILLFOCUS message to the treeview. KillFocus triggers an update window on the treeview, which calls TREEVIEW_Refresh. TREEVIEW_Refresh calls UpdateScrollBars, which is the function I modified. With my mod, if there is a horizontal scrollbar, then TREEVIEW_HScroll is called. Very near the top of TREEVIEW_HScroll() is: if (infoPtr->hwndEdit) SetFocus(infoPtr->hwnd); So that removes the focus from the edit window, and returns it to the treeview. The simple fix is to comment out those two lines.
I guess if the user moves the scrollbars, maybe the focus should be changed. But probably only on a click on the scrollbars (I guess some testing on Windows is needed).