python后台读取图像与PIL+pywin32

 首先安装pillow /pywin32 库

通过api读取后台窗口图像，再用pillow对游戏图像进行分析处理判断

    def window_capture(self,hwnd):
        # 获取句柄窗口的大小
        rctA = win32gui.GetWindowRect(hwnd)
        w = rctA[2] - rctA[0]
        h = rctA[3] - rctA[1]
        hwndDC = win32gui.GetWindowDC(hwnd)
        mfcDC = win32ui.CreateDCFromHandle(hwndDC)
        saveDC = mfcDC.CreateCompatibleDC()
        saveBitMap = win32ui.CreateBitmap()
        saveBitMap.CreateCompatibleBitmap(mfcDC, w, h)
        saveDC.SelectObject(saveBitMap)
        saveDC.BitBlt((0, 0), (w, h), mfcDC, (0, 0), win32con.SRCCOPY)
        # saveBitMap.SaveBitmapFile(saveDC, "img_Winapi.bmp")
        ###获取位图信息
        bmpinfo = saveBitMap.GetInfo()
        bmpstr = saveBitMap.GetBitmapBits(True)
        ###生成图像
        im_PIL_TEMP = Image.frombuffer('RGB', (bmpinfo['bmWidth'], bmpinfo['bmHeight']), bmpstr, 'raw', 'BGRX', 0, 1)
        #