Also fix a minor zoom page issue in Libedit.
wxMSW, version 2.8.x must be patched.
Some zoom values smaller than 3 to 5 create artifacts on screen, mainly values < 1.
(corresponding to draw scale factor > 1 )
* see http://trac.wxwidgets.org/ticket/9554
This is fixed in version 2.9.x
Workaround: ( that is not a full fix, but remaining artifacts are acceptable )
edit file edit file <wxWidgets>/src/msw/dc.cpp
>> search for line
static const int VIEWPORT_EXTENT = 1000;
>> and replace by
static const int VIEWPORT_EXTENT = 10000;