My answer was largely about the COM reference count handling and my code fragment was based on a sample from MSDN I think. you'll then need to release manually since we detached the referenceīut it may be easier just to use the helper wrappers in any case. (this would be handled automatically by the ComPtr destructor)Īlternatively you can use the helper wrapper but then take the pointer from it ID3D11Device1* pDevice1 = device.As().Detach() Hr = device->QueryInterface(IID_ID3D11Device1, (void**)&device1) Not all versions of Windows can run the latest versions of DirectX.I think you do need to convert it from a DirectX11 object, yes, but you can do this without using the ComObj helper wrapper using the normal COM QueryInterface e.g.: ID3D11Device* device = NULL If you have Windows 10, then you already have the latest version of DirectX installed. To get the latest version of DirectX for your version of Windows, use Windows Update. We recommend that you select Yes to help ensure that your drivers have been signed by a publisher that has verified their authenticity. The first time you use the DirectX Diagnostic Tool, you might be asked whether you want to check if your drivers are digitally signed.

In the DirectX Diagnostic Tool, select the System tab, then check the DirectX version number under System Information. To check which version of DirectX is on your PC using the DirectX Diagnostic Tool, select the Start button and type dxdiag in the search box, then press Enter.

If your PC doesn't have the right version of DirectX installed (the product box should tell you which one you need), your game might not work properly. DirectX is a suite of multimedia technologies required by many Windows games.

Direct x 11.1 download