When the sane.ds TWAIN data source displays it's user interface, it auto-generates a proprties dialog from the sane options for the current scanner.
Oftenly this dialog contains windows ComboBox controls to choose between scan modes (gray / color) or resolutions.
The ComboBox controls created are too flat to properly drop down, they only open about half a line height. This is difficult to use.
This patch makes the control about 10 times the height of a string. The combox will not occupy more height than the elements that are filled in anyway.
Behaviour before the patch:
{width=305 height=244}
Behaviour after the patch:
{width=308 height=246}