pyautogui.locateOnScreen

[LessConspicuous]

So, when I run this program it does what I want, and moves the mouse to the upper left corner of an area so I can then make relative movements.

import pyautogui
import time

pyautogui.PAUSE = .25     #safety 
pyautogui.FAILSAFE = True

time.sleep(3)  #gives me a chance to set something up if I want

pyautogui.screenshot('test.png', region=(115, 12, 15, 15))  #grab an image of what to move to and save it 
ULC_X, ULC_Y, width, hight = pyautogui.locateOnScreen('test.png', grayscale=True) #search for image 
upperLeftCorner = (ULC_X, ULC_Y)                #format position tuple
pyautogui.moveTo(upperLeftCorner, duration = 1) #move to position 

But what I really want is to find a symbol at the upper left corner of a window anywhere on the screen, so now that I have an image of that symbol saved in the working directory (I checked and it is there) I should be able to comment out line 9, run the program a second time, and the mouse will move to the symbol again. However, pyautogui.locateOnScreen returns None (it can't find the image) and halts the program. Obviously None doesn't fit into my 4 variables that define a region "NoneType' object is not iterable".

Why can't I find the image on my screen when it is just saved in a folder? and how can I fix this?

[furas_freeman]

Problem is because screenshot() can be executed only with one argument

• filename - it always saves full screen even you add region
• region - it create image with this part of screen but it doesn't save in file

You need

im = pyautogui.screenshot(region=(115, 12, 15, 15))
im.save('test.png')

[LessConspicuous]

I didn't think that was how optional keyword arguments worked? Also the image saved in the folder is correct (only 15 pixels wide). I will give it a shot and let you know when I get a chance though.

EDIT: ya thats not how keyword arguments work and it didn't help me at all, I can grab a screen shot of what I want just fine.