Autoclick Attatched to Window

import pyautogui
import win32api, win32con, win32gui, win32ui, win32service, os, time
import wmi
import ctypes, sys
import time

#Check for admin privileges
def is_admin():
    try:
        return ctypes.windll.shell32.IsUserAnAdmin()
    except:
        return False

def f_click(pycwnd):
    x=300
    y=300
    lParam = y <<15 | x
    pycwnd.SendMessage(win32api.mouse_event(win32con.MOUSEEVENTF_LEFTDOWN,x,y,0,0), lParam);
    pycwnd.SendMessage(win32api.mouse_event(win32con.MOUSEEVENTF_LEFTUP,x,y,0,0), lParam);



def get_whndl():
    #whndl = win32gui.FindWindowEx(0, 0, None, 'ModernWarfare.exe')
    whndl = win32gui.FindWindowEx(0, 0, None, 'mspaint.exe')
    print("ModernWarfare.exe found\n")
    print (whndl)
    return whndl

def make_pycwnd(hwnd):
    PyCWnd = win32ui.CreateWindowFromHandle(hwnd)
    print(PyCWnd, hwnd)
    return PyCWnd

def send_input_hax(pycwnd, msg):
    f_click(pycwnd)
    for c in msg:
        if c == "\n":
            pycwnd.SendMessage(win32con.WM_KEYDOWN, win32con.VK_RETURN, 0)
            pycwnd.SendMessage(win32con.WM_KEYUP, win32con.VK_RETURN, 0)
            print("Enter Pressed")
        else:
            pycwnd.SendMessage(win32con.WM_CHAR, ord(c), 0)
    pycwnd.UpdateWindow()

whndl = get_whndl()

def callback(hwnd, hwnds):
    if win32gui.IsWindowVisible(hwnd) and win32gui.IsWindowEnabled(hwnd):
        hwnds[win32gui.GetClassName(hwnd)] = hwnd
    return True

if is_admin():
    pass
else:
    ctypes.windll.shell32.ShellExecuteW(None, "runas", sys.executable, " ".join(sys.argv), None, 1)
print("Wating")
time.sleep(5)
print("Wait done!")

hwnds = {}
win32gui.EnumChildWindows(whndl, callback, hwnds)
#whndl = hwnds['IW8']
whndl = hwnds['MSPaintApp']

pycwnd = make_pycwnd(whndl)
msg = "It works !\n"
send_input_hax(pycwnd,msg)

############################
#Show current active windows
############################
#print(hwnds)

##############################
#Show current active processes
##############################
#c = wmi.WMI ()
#for process in c.Win32_Process ():
#    print (process.ProcessId, process.Name)

print("\nDone")