Question

我想开发一个守护进程，它将在登录前的会话中捕获我的OSX的屏幕

我尝试使用Quazt显示服务（流）和核心图形框架，但它仍然不可用

我的代码使用Quartz服务

 m_isExit = FALSE;
m_display = kCGDirectMainDisplay; // 1
m_displayMode = CGDisplayCopyDisplayMode(m_display);
if (m_display == NULL)
{
    throw Exception("OSX-Quart service Can not get Display mode ",VF_ERR_SCREEN_MONITOR_OSX_QUART_CREATE);
}

m_height = CGDisplayModeGetHeight(m_displayMode);
m_width = CGDisplayModeGetWidth(m_displayMode);


m_stream = CGDisplayStreamCreate(m_display,m_width,m_height,'BGRA',NULL,VncStreamFrameAvailableHandler);
if (m_stream == NULL)
{
    throw Exception("OSX-Quart service  Can not create Stream",VF_ERR_SCREEN_MONITOR_OSX_QUART_CREATE);
}

m_screenMonitorThread.start(*this);

它总是通过例外。另一个使用Core Graphic框架的代码

    m_mainDisplay = kCGDirectMainDisplay;
    m_oriImage = CGDisplayCreateImage(m_mainDisplay);
    if (m_oriImage == NULL)
    {
        throw Exception ("Core Graphic Can not Create original Image from display",VF_ERR_SCREEN_MONITOR_OSX_CG_CREATE);
    }
    ScreenGetConfigure(m_oriImage);
    screenData.m_oriImage = m_oriImage;
    m_oriPixelDataRef = CGDataProviderCopyData(CGImageGetDataProvider(m_oriImage));

    if (m_oriPixelDataRef == NULL)
    {
        throw Exception ("Core Graphic Can not get pixel data ref",VF_ERR_SCREEN_MONITOR_OSX_CG_CREATE);
    }

两个代码都没有在登录前会话中工作。希望有人可以帮我解决问题

MacBook，OS X El Capitan（10.11）

在登录前会话中的OSX捕获屏幕

0 个答案: