怎么样查电脑的显卡驱动(二种获取显卡驱动存储路径方法)

上篇讲到英伟达在github上提供其显卡DLSS功能的SDK，因分析问题，就对其提供的库大概看了下，发现它内置了两种查询显卡驱动存储路径的方法，第一种是在Windows101803以上使用gdi32.dll中提供的函数来查询，第二种是在Windows101607到vista之间用常见的setupAPI来查询，由此可见有些知识需要更新了，用这么多年setupAPI，也许在未来真的不管用了呢。

我们来看下gdi32.dll方式，它主要是使用gdi32.dll中的导出函数D3DKMTEnumAdapters2和D3DKMTQueryAdapterInfo实现的，它需要d3dkmthk.h头文件(19041SDK)，如果没有可能就要自行声明许多用的到结构了：

std::wstringGetDriverStorePathFromQAI(intdevice_id){std::wstringdriver_store_path;HMODULEgdi_h=NULL;PFN_D3DKMTENUMADAPTERS2pfnD3DKMTEnumAdapters2;PFN_D3DKMTQUERYADAPTERINFOpfnD3DKMTQueryAdapterInfo;gdi_h=LoadLibrary(_T("gdi32.dll"));if(gdi_h){pfnD3DKMTEnumAdapters2=(PFN_D3DKMTENUMADAPTERS2)GetProcAddress(gdi_h,"D3DKMTEnumAdapters2");pfnD3DKMTQueryAdapterInfo=(PFN_D3DKMTQUERYADAPTERINFO)GetProcAddress(gdi_h,"D3DKMTQueryAdapterInfo");if(!pfnD3DKMTEnumAdapters2||!pfnD3DKMTQueryAdapterInfo)returndriver_store_path;D3DKMT_ENUMADAPTERS2enum_adapters={0};enum_adapters.NumAdapters=0;enum_adapters.pAdapters=NULL;if(pfnD3DKMTEnumAdapters2(&enum_adapters)!=0)returndriver_store_path;enum_adapters.pAdapters=newD3DKMT_ADAPTERINFO[enum_adapters.NumAdapters];if(!enum_adapters.pAdapters)returndriver_store_path;memset(enum_adapters.pAdapters,0,sizeof(D3DKMT_ADAPTERINFO)*enum_adapters.NumAdapters);if(pfnD3DKMTEnumAdapters2(&enum_adapters)==0){for(ULONGi=0;i< enum_adapters.NumAdapters; i++) { D3DKMT_ADAPTERINFO* adapter_info_ptr = (D3DKMT_ADAPTERINFO*)&enum_adapters.pAdapters[i]; D3DKMT_QUERYADAPTERINFO query_info = { 0 }; char private_data[28] = { 0 }; query_info.hAdapter = adapter_info_ptr->hAdapter;query_info.Type=KMTQAITYPE_PHYSICALADAPTERDEVICEIDS;query_info.PrivateDriverDataSize=28;query_info.pPrivateDriverData=private_data;if(pfnD3DKMTQueryAdapterInfo(&query_info)==0){//nvidia=0x10de,amd=0x1002if(*((DWORD*)private_data+1)==device_id){D3DDDI_QUERYREGISTRY_INFO*reg_info_ptr;//thesize0x432isfromnvidia'sdllreg_info_ptr=(D3DDDI_QUERYREGISTRY_INFO*)newchar[0x432];memset(reg_info_ptr,0,0x432);reg_info_ptr->QueryType=D3DDDI_QUERYREGISTRY_DRIVERSTOREPATH;query_info.hAdapter=adapter_info_ptr->hAdapter;query_info.Type=KMTQAITYPE_QUERYREGISTRY;query_info.pPrivateDriverData=reg_info_ptr;query_info.PrivateDriverDataSize=0x432;NTSTATUSstatus=pfnD3DKMTQueryAdapterInfo(&query_info);if(status==0){driver_store_path=ReplaceSystemroot(reg_info_ptr->OutputString);delete[]reg_info_ptr;break;}delete[]reg_info_ptr;}}}}if(enum_adapters.pAdapters)delete[]enum_adapters.pAdapters;}returndriver_store_path;}

再有就是setupAPI的方式，这个大家应该相当熟悉了：

std::wstringGetDriverStorePath(conststd::wstring&device_id){std::wstringinfPath;HDEVINFOdeviceInfoSet=SetupDiGetClassDevs(&GUID_DEVCLASS_DISPLAY,NULL,NULL,DIGCF_PRESENT);if(deviceInfoSet==INVALID_HANDLE_VALUE)returninfPath;SP_DEVINFO_DATAdeviceInfoData;deviceInfoData.cbSize=sizeof(SP_DEVINFO_DATA);for(DWORDindex=0;SetupDiEnumDeviceInfo(deviceInfoSet,index,&deviceInfoData);++index){DWORDpropertyType;WCHARbuffer[1024];deviceInfoData.cbSize=sizeof(SP_DEVINFO_DATA);if(SetupDiGetDeviceRegistryProperty(deviceInfoSet,&deviceInfoData,SPDRP_HARDWAREID,&propertyType,reinterpret_cast(buffer),sizeof(buffer),NULL)){if(wcsstr(buffer,device_id.c_str())!=NULL)//NVIDIAvendorID{DWORDreq_size=0;if(SetupDiGetDeviceProperty(deviceInfoSet,&deviceInfoData,&DEVPKEY_Device_DriverInfPath,&propertyType,reinterpret_cast(buffer),sizeof(buffer),&req_size,0)){infPath=buffer;if(SetupGetInfDriverStoreLocation(infPath.c_str(),NULL,NULL,buffer,sizeof(buffer),&req_size)){PathRemoveFileSpecW(buffer);infPath=buffer;}else{infPath.clear();}}}}}SetupDiDestroyDeviceInfoList(deviceInfoSet);returninfPath;}