How do I set the appropriate DISPLAY environment variable?
I try to launch idle in cygwin using the following command:
idle
...and I get a display error:
_tkinter.TclError: no display name and no $DISPLAY environment variable
Then I try the following:
export DISPLAY=:0.0
...And of course it says it `couldn't connect to display ":0.0"
How do I find which display variable is appropriate to launch a certain application?
You most likely haven't started the cygwin/X server, or maybe not even installed it, you should do that first, so that there is an actual X Display to connect to. cygwin normally only handles commandline programs and the idle development invorment for Python is X based
Alternatively you can use the Windows idle environment for development and run the programs under cygwin.
I got "idle3" to run. It is NOT a stand-alone and needs an X-Window already running and present on your Windows environment.
I ran "xwin" first. xwin creates the display that "export DISPLAY=:0.0" resolves to.
