We haven't seen this problem before. We have a Macintosh IIcx running
Macintosh OS 6.0.7 and MacX 1.1. For us, Command-B for copying selected
area works properly. We don't see any processing speed slowdowns on
Command-B Copy on our Macintosh IIcx either. There is, however, a release
note on MacX 1.1 that states:
MacX requires the presence of 32-bit QuickDraw to support one feature:
the conversion of color PICTs to X11 selections. If you do install
32-bit QuickDraw on your machine (or have a machine at least as new as
a Macintosh IIci), you will have this capability--MacX will offer to
convert clipboard contents to color PIXMAP and COLORMAP style. If MacX
can't find the 32-bit QuickDraw features, MacX will only offer to
convert to BITMAP.
Note that 32-bit QuickDraw also adds some performance enhancement and
bug fixes on machines older than Macintosh IIci. Also note that 32-bit
QuickDraw is built into System 7.0 and later for all machines that
support Color QuickDraw.
Is 32-bit QuickDraw installed on your Macintosh IIcx or Macintosh IIx?
Since Command-B was not described very clearly, here are steps to follow:
1) In MacX, do "Command-B" or select "Copy Screen to Clipboard" from
the Window menu. The mouse pointer becomes '+' sign.
2) Select whatever area of screen you want. The selected area (graph or
text) will be copied to the Clipboard.