Borderless opencv window

make_window_borderless.py

def make_window_borderless(self):
        """
            Requires: pywin32
            https://www.lfd.uci.edu/~gohlke/pythonlibs/#pywin32
            import win32gui as wg
            import win32api as wa
            import win32con as wc
            
            Based on: https://github.com/howardjohn/pyty/blob/master/src/window_api.py
        """
        def restore(hwnd):
            """
            Restores (unmaximizes) the window.
            Args:
                hwnd (int): The window handler.
            """
            wg.ShowWindow(hwnd, wc.SW_RESTORE)
    
    
        def maximize(hwnd):
            """
            Maximizes the window.
            Args:
                hwnd (int): The window handler.
            """
            wg.ShowWindow(hwnd, wc.SW_MAXIMIZE)

        def hwnd_for_title(title):
            def cb(hwnd, param):
                title = ''.join(char for char in wg.GetWindowText(hwnd) if ord(char) <= 126)
                d[title] = hwnd
            d = {}
            wg.EnumWindows(cb, title)
            if title in d:
                return d[title]
            else:
                return None
        
        hwnd = hwnd_for_title(self.window_name)
        style = wg.GetWindowLong(hwnd, wc.GWL_STYLE)
        style &= ~wc.WS_OVERLAPPEDWINDOW
        style |= wc.WS_POPUP
        wg.SetWindowLong(hwnd, wc.GWL_STYLE, style)
        
        rgb = wg.CreateSolidBrush(wa.RGB(0, 0, 0))
        GCLP_HBRBACKGROUND = -10
        wa.SetClassLong(hwnd, GCLP_HBRBACKGROUND, rgb)
        
        maximize(hwnd)
        restore(hwnd)