内存泄漏/ Python Windows 7屏幕截图

Question

我已经在双显示器系统（Windows7）上尝试以下Python代码来重复保存屏幕截图。它生成33张14.6MB（总共482MB）的照片，然后崩溃。使用Process Explorer进行检查，我可以看到已用内存量增加到约500MB。我的问题是如何阻止内存泄漏？import win32gui, win32ui, win32con, win32apiimport timeimport osdef my_capture(file_name):    hwin = win32gui.GetDesktopWindow()    width = win32api.GetSystemMetrics(win32con.SM_CXVIRTUALSCREEN)    height = win32api.GetSystemMetrics(win32con.SM_CYVIRTUALSCREEN)    left = win32api.GetSystemMetrics(win32con.SM_XVIRTUALSCREEN)    top = win32api.GetSystemMetrics(win32con.SM_YVIRTUALSCREEN)    hwindc = win32gui.GetWindowDC(hwin)    srcdc = win32ui.CreateDCFromHandle(hwindc)    memdc = srcdc.CreateCompatibleDC()    bmp = win32ui.CreateBitmap()        bmp.CreateCompatibleBitmap(srcdc, width, height)    memdc.SelectObject(bmp)    memdc.BitBlt((0, 0), (width, height), srcdc, (left, top), win32con.SRCCOPY)    bmp.SaveBitmapFile(memdc, file_name) # 'screenshot.bmp'def captureAndSave(i):    if i < 10:        tmpStr = "00000" + str(i)    elif i < 100:        tmpStr = "0000" + str(i)    elif i < 1000:        tmpStr = "000" + str(i)    elif i < 10000:        tmpStr = "00" + str(i)    elif i < 100000:        tmpStr = "0" + str(i)    else:        tmpStr = str(i)    my_capture(tmpStr + '.bmp')def myMainLoop():    i = 0    while 1:        i = i + 1        captureAndSave(i)        time.sleep(0.2)#-----------------------------------------------------------------------------if __name__ == '__main__':    try:        myMainLoop()        # capure all monitor windows    except KeyboardInterrupt:        pass 

Answer 1

您将需要清理位图和DC，在位图保存后添加类似的内容。

win32gui.DeleteObject(bmp.GetHandle())

memdc.DeleteDC()

srcdc.DeleteDC()

win32gui.ReleaseDC(hwin, hwindc)