Keypress event in python,Plz?

[tingting]

hey guys, i just wonder whether there is a way to do keypress event when the python script is runing? for instance, while the script is runing, i am able to get a single frame output by pressing 'R' on the keyboard, rather than looping through every frame as output , any thought or ideas? thanks in advance

ting

[Steve Baer]

Hi Ting,
I don't quite understand what you are trying to do. Maybe you want to try the GetString function to pause Rhino for user input?
Thanks,
-Steve

[tingting]

Hi Ting,
I don't quite understand what you are trying to do. Maybe you want to try the GetString function to pause Rhino for user input?
Thanks,
-Steve

Hi Steve,
thank you so much for the quick reply, am afraid GetString() is not exactly what am looking for, the function am looking for is that when the script is running, by pressing any key on the keyboard, am able to call a function( functions like rs.CreatePreviewImage(),so i can output a single image), once the function is done, the script will resume runing where it leftover until the end, for instance, i have a animation script in python which is a ball bouncing around, rather than setting up where to record in advance, i prefer to record any moment i feel interested interactivly while the script is running, i think it is very similar to the function scriptcontext.escape_test(), the difference is i would like to trigger my customized function rather than breaking the script. thank you so much again
cheers
ting

[bar]

Remark i am pretty sure there is a possibility for doing this in a pure .NET way but anyhow on windows this will work:

import ctypes
from ctypes.wintypes import WORD
user32 = ctypes.windll.user32
user32.GetAsyncKeyState.restype = WORD
    
while True:
    user32.GetAsyncKeyState.argtypes = [ ctypes.c_char ]
    if user32.GetAsyncKeyState('Q'): break
    if user32.GetAsyncKeyState('A'): print "you"*100

[tingting]

Thank you so much for your help ,i got it.

[jonny]

HI All .Thanks for this code.I tried it but it happened to me something strange:when i write "A" on the keyboard the script breaks ,but in the editor i find "A" written in the position of the curson where it was when i ran the script

[bar]

yep I can reproduce this nasty behaviour. The RhinoPython Editor still handles all Keyboard events when the script is started from within.
You could create a toolbar button starting the Command -RunPythonScript "yourkeyboradscript.py" and than start your script execution from that button.
More proper but more coding: You have to create a dialog eating up the keyboard events in a more conventional way.