正如问题所示，我正在尝试提取描述性监视器名称以匹配显示适配器名称。下面的代码给了我一个设备ID，如\。\ DISPLAY1，这是可以理解的，但不是我正在寻找的。
// Get name.
D3DADAPTER_IDENTIFIER9 d3dID;
d3d9.Get().GetAdapterIdentifier(iAdapter, 0, &d3dID);
dispAd.name = d3dID.Description;
// Add monitor ID to display adapter name.
FIX_ME // Not happy with this yet!
HMONITOR hMonitor = d3d9.Get().GetAdapterMonitor(iAdapter);
MONITORINFOEXA monInfoEx;
monInfoEx.cbSize = sizeof(MONITORINFOEXA);
if (GetMonitorInfoA(hMonitor, &monInfoEx))
{
dispAd.name = dispAd.name + " on: " + monInfoEx.szDevice;
}
else TPB_ASSERT(0); // Mute?
我查看了文档，了解从哪里提取实际名称，但直到现在我还没有找到它。有时候我有点愚蠢（如果你愿意，我会失明），所以我会在午休期间再给它一次 - 但也许有人可以指出我正确的方向？非常感谢。
（实际名称是指图形配置面板中显示的名称）
答案 0 :(得分：2)
UINT iOutput = 0;
IDXGIOutput *pOutput = nullptr;
while (DXGI_ERROR_NOT_FOUND != pAdapter->EnumOutputs(iOutput++, &pOutput))
{
DXGI_OUTPUT_DESC desc;
VERIFY(S_OK == pOutput->GetDesc(&desc));
MONITORINFOEXW monInfoEx;
monInfoEx.cbSize = sizeof(MONITORINFOEXW);
GetMonitorInfoW(desc.Monitor, &monInfoEx);
DISPLAY_DEVICEW dispDev;
dispDev.cb = sizeof(DISPLAY_DEVICEW);
EnumDisplayDevicesW(monInfoEx.szDevice, 0, &dispDev, 0);
// FIXME: far from perfect, but should do the job if a vendor driver is installed.
// Otherwise it just displays something along the lines of "Plug & Play monitor".
SendDlgItemMessageW(hDialog, IDC_COMBO_OUTPUT, CB_ADDSTRING, 0, (LPARAM) dispDev.DeviceString);
pOutput->Release();
}
答案 1 :(得分：1)
这很有效。它应该只需要Windows + stl来编译和吃HMONITOR。我不满意的一些事情：
WMI代码可能没有使用最佳名称字段，但是我现在所拥有的上网本所有人都说“即插即用”blabla所以我将不得不在另一个系统上测试它我很快就有机会。但是，只需在WMI函数中调整此行：
pClassObj->Get(L"Description", 0, &varProp, NULL, NULL);
代码：
// tpbds -- Windows monitor description
// Disable warnings about non-unwindable objects in case C++ exceptions are disabled.
#pragma warning(disable:4530)
// Force Unicode.
#ifndef _UNICODE
#define _UNICODE
#endif
#define _WIN32_DCOM
#pragma comment(lib, "wbemuuid.lib")
#include <windows.h>
#include <comdef.h>
#include <wbemidl.h>
#include <string>
#include <sstream>
#include "monitordescription.h"
#define FIX_ME
#define SAFE_RELEASE(pX) if (pX) pX->Release(); pX = NULL;
// serialize constant value T to std::wstring
template<typename T> inline std::wstring ToWideString(const T &X)
{
std::wstringstream stream;
stream << X;
return stream.str();
}
static const std::wstring GetMonitorDescriptonFromWMI(DWORD iMonitor)
{
// If anything fails down the line I just return an empty string and apply a fallback mechanism.
// This type of function should never fail unless you're probing a non-existent piece of harwdare.
// Initialize COM.
if (FAILED(CoInitializeEx(NULL, COINIT_MULTITHREADED)))
{
return L"";
}
// Set COM security levels.
// Note: if you are using Windows 200, you need to specify the default authentication
// credentials for a user by using a SOLE_AUTHENTICATION_LIST structure in the pAuthList parameter.
if (FAILED(CoInitializeSecurity(
NULL,
-1,
NULL,
NULL,
RPC_C_AUTHN_LEVEL_DEFAULT,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL, // pAuthList
EOAC_NONE,
NULL)))
{
CoUninitialize();
return L"";
}
// Obtain initial locator to WMI.
IWbemLocator *pLocator = NULL;
if (FAILED(CoCreateInstance(CLSID_WbemLocator, NULL, CLSCTX_INPROC_SERVER, IID_IWbemLocator, reinterpret_cast<LPVOID *>(&pLocator))))
{
CoUninitialize();
return L"";
}
// Connect to WMI.
IWbemServices *pServices = NULL;
if (FAILED(pLocator->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL, NULL, NULL, NULL, NULL, &pServices)))
{
pLocator->Release();
CoUninitialize();
return NULL;
}
// Set security levels on the proxy.
if (FAILED(CoSetProxyBlanket(
pServices,
RPC_C_AUTHN_WINNT,
RPC_C_AUTHZ_NONE,
NULL,
RPC_C_AUTHN_LEVEL_CALL,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
EOAC_NONE)))
{
pServices->Release();
pLocator->Release();
CoUninitialize();
return L"";
}
// Request WMI data.
IEnumWbemClassObject* pEnumerator = NULL;
if (FAILED(pServices->ExecQuery(
bstr_t("WQL"),
bstr_t("SELECT * FROM Win32_DesktopMonitor"),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator)))
{
pServices->Release();
pLocator->Release();
CoUninitialize();
return L"";
}
// Try to compile a correct description.
std::wstring description;
DWORD iLoop = 1; // Monitor index is 1-based.
IWbemClassObject *pClassObj = NULL;
while (pEnumerator != NULL)
{
ULONG uReturn = 0;
const HRESULT hRes = pEnumerator->Next(WBEM_INFINITE, 1, &pClassObj, &uReturn);
if (uReturn == 0)
{
// Done (pClassObj remains NULL).
break;
}
// Is this the one we're looking for?
FIX_ME // Untested shortcut (assumes order is identical to that of EnumDisplayDevices).
if (iMonitor == iLoop)
{
FIX_ME // This needs to be tested, I only had a Netbook without proper driver!
VARIANT varProp;
pClassObj->Get(L"Description", 0, &varProp, NULL, NULL); // Check the MSDN for Win32_DesktopMonitor to see what your options are!
description = varProp.bstrVal;
description += L" #" + ToWideString(iMonitor);
VariantClear(&varProp);
SAFE_RELEASE(pClassObj);
// Done.
break;
}
else
SAFE_RELEASE(pClassObj);
}
pServices->Release();
pLocator->Release();
CoUninitialize();
// With a bit of luck this string was just built.
return description;
}
const std::wstring GetMonitorDescription(HMONITOR hMonitor)
{
MONITORINFOEX monInfoEx;
monInfoEx.cbSize = sizeof(MONITORINFOEX);
if (GetMonitorInfo(hMonitor, &monInfoEx))
{
// Get monitor index by matching ID.
DWORD iDevNum = 0;
DISPLAY_DEVICE dispDev;
do
{
dispDev.cb = sizeof(DISPLAY_DEVICE);
EnumDisplayDevices(NULL, iDevNum, &dispDev, 0);
++iDevNum; // Incrementing here is right since we want a 1-based display.
}
while (0 != wcscmp(dispDev.DeviceName, monInfoEx.szDevice));
// Attempt to get the description from WMI.
// If it's empty, carry on.
const std::wstring descriptionFromWMI = GetMonitorDescriptonFromWMI(iDevNum);
if (!descriptionFromWMI.empty())
return descriptionFromWMI;
// Enumerate again, since doing it by string instead of index yields a different (more usable) DeviceString.
dispDev.cb = sizeof(DISPLAY_DEVICE);
EnumDisplayDevices(monInfoEx.szDevice, 0, &dispDev, 0);
// WMI approach failed so we rely on EnumDisplayDevices() for an acceptable result.
std::wstring description(dispDev.DeviceString);
return description + L" #" + ToWideString(iDevNum);
}
else return L"Unknown monitor";
}