overlay.py 文件源码

def MakeTransparent(self, amount):
        if os.name == 'nt':  # could substitute: sys.platform == 'win32'
            hwnd = self.GetHandle()
            _winlib = win32api.LoadLibrary("user32")
            pSetLayeredWindowAttributes = win32api.GetProcAddress(
                _winlib, "SetLayeredWindowAttributes")
            if pSetLayeredWindowAttributes is None:
                return
            exstyle = win32api.GetWindowLong(hwnd, win32con.GWL_EXSTYLE)
            if 0 == (exstyle & 0x80000):
                exstyle |= win32con.WS_EX_LAYERED | win32con.WS_EX_TOOLWINDOW | win32con.WS_EX_TRANSPARENT
                win32api.SetWindowLong(hwnd, win32con.GWL_EXSTYLE, exstyle)
            win32gui.SetLayeredWindowAttributes(hwnd, 0, amount, 2)
        else:
            print('####  OS Platform must be MS Windows')
            self.Destroy()