mouse.c: protocol error in Windows for bind

[Petr M. <mi...@ph...>]

Can somebody else on Windows reproduce the bug below? I would like this gets 
fixed before 4.2.5 is released.

In Windows, there is only one open and active graph window. 
I think this could be the reason while mouse.c:event_keypress() reports 
"protocol error" if you try e.g.:

bind 's' 'print "Hello";'
bind 'd' 'set grid;'
bind 'f' 'set time'
bind 'g' 'plot x;'
bind 'x' 'test;'
plot x*x

and then press "s" hotkey (or the others) several times. 

The code in mouse.c after
   if (ptr->allwindows && ptr->command) {

is testing "allwindows" and "active" windows but it could somehow miss the 
case of a single-window graph. I'm not sure what should be the correct fix 
among these several if .. else if ... This well handles case of multiple 
windows (x11, wxt), but what should it do for single-window cases such as 
windows or pm terminals?

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PM