我怎么知道插入哪个HDMI端口？

Question

我有一台带双HDMI输出的计算机。当我将显示器连接到任一显示器时，我想检测出插入了哪个显示器。

它可以借助注册表，powershell或C＃代码或任何其他东西。只要不是C ++。

我尝试了各种wmi方法。在注册表中搜索可以指定hdmi端口的任何内容。但是到目前为止什么也没发现。

这个stackoverflow答案（Detect/identify the port (HDMI, other) the monitor is connected to in Windows 7/8/10 Win32 C++）是我发现的唯一关于我的需要的答案，但是我无法处理c ++，所以从现在开始我就被卡住了。

谢谢大家

Answer 1

在powershell中尝试。

$objWMi = get-wmiobject -namespace root\WMI -computername localhost -Query "Select * from WmiMonitorConnectionParams"

foreach ($obj in $objWmi)
{
    write-host "Active:" $obj.Active
    write-host "InstanceName:" $obj.InstanceName
    write-host "VideoOutputTechnology:" $obj.VideoOutputTechnology
    write-host
    write-host "########"
    write-host
}

WmiMonitorConnectionParams类具有VideoOutputTechnology属性，该属性返回以下内容：

    typedef enum _D3DKMDT_VIDEO_OUTPUT_TECHNOLOGY { 
  D3DKMDT_VOT_UNINITIALIZED         = -2,
  D3DKMDT_VOT_OTHER                 = -1,
  D3DKMDT_VOT_HD15                  = 0,
  D3DKMDT_VOT_SVIDEO                = 1,
  D3DKMDT_VOT_COMPOSITE_VIDEO       = 2,
  D3DKMDT_VOT_COMPONENT_VIDEO       = 3,
  D3DKMDT_VOT_DVI                   = 4,
  D3DKMDT_VOT_HDMI                  = 5,
  D3DKMDT_VOT_LVDS                  = 6,
  D3DKMDT_VOT_D_JPN                 = 8,
  D3DKMDT_VOT_SDI                   = 9,
  D3DKMDT_VOT_DISPLAYPORT_EXTERNAL  = 10,
  D3DKMDT_VOT_DISPLAYPORT_EMBEDDED  = 11,
  D3DKMDT_VOT_UDI_EXTERNAL          = 12,
  D3DKMDT_VOT_UDI_EMBEDDED          = 13,
  D3DKMDT_VOT_SDTVDONGLE            = 14,
#if (DXGKDDI_INTERFACE_VERSION >= DXGKDDI_INTERFACE_VERSION_WDDM1_3_M1)
  D3DKMDT_VOT_MIRACAST              = 15,
#endif 
  D3DKMDT_VOT_INTERNAL              = 0x80000000,
  D3DKMDT_VOT_SVIDEO_4PIN           = D3DKMDT_VOT_SVIDEO,
  D3DKMDT_VOT_SVIDEO_7PIN           = D3DKMDT_VOT_SVIDEO,
  D3DKMDT_VOT_RF                    = D3DKMDT_VOT_COMPOSITE_VIDEO,
  D3DKMDT_VOT_RCA_3COMPONENT        = D3DKMDT_VOT_COMPONENT_VIDEO,
  D3DKMDT_VOT_BNC                   = D3DKMDT_VOT_COMPONENT_VIDEO
} D3DKMDT_VIDEO_OUTPUT_TECHNOLOGY;