New MIAME.INI command (OPTIONS=NOWHEEL) disables the otherwise automatic conversion of the mouse wheel events into Up/DownArrow key presses when the focus is not on a control that captures the mouse wheel directly (such as XTREE, multi-line INFLD, etc.).
The default behavior allows you to use the mouse wheel to scroll within certain environments that are otherwise text-only (like VUE). But in some cases the default behavior is undesirable, for example:
| • | On laptops with sensitive mouse pads, you may get spurious cursor motion just from brushing your palm against it (very annoying in VUE). |
| • | In screen contexts where there may be a mixture of controls that scroll (like XTREE) and those that don't (like a single line INFLD), users may attempt to use the mouse wheel with the intent to scroll an object like XTREE, when in fact the focus is on a control like INFLD where the conversion of the mouse wheel to an Up/DownArrow may trigger unwanted exitcodes (3 & 5), leading to further confusion. |
Note that VUE supports its own version of this switch (in the INI.VUE and command mode): MOUSEPOS <boolean>. Previously it defaulted to ON (mouse wheel enabled), and was always re-enabled on exit. With this update, it defaults to OFF if OPTIONS=NOWHEEL is set in the miame.ini, and in any case, VUE always restores the original global setting on exit.
Also, the mouse wheel is now disabled in INFLD self-combo fields (which exit on the first down arrow key); otherwise it is too easy to end up with several additional down arrow key events which would then be interpreted according to logic impossible for the user to predict. Self-combos within XTREE continue to operate as before.
