hresult 0x800ac472

The idispatch interface is the core of COM automation. In fact, the idispatch interface is also very simple, there are only four methods: IDispatch : public IUnknown { public: virtual HRESULT STDMETHODCALLTYPE GetTypeInfoCount( /* [out] */ __RPC__out UINT *pctinfo) = 0; virtual HRESULT STDMETHODCALLTYPE GetTypeInfo( /* [in] */ UINT iTInfo,

maintain the customer status on the server.5Appendix: interfaces and methods of WebGIS WebServicesMaybe they accidentally become standards? In fact, it is intended for readers to have a reference and a negative model when doing this design. I removed the data modification API, which is too dangerous. // WebGIS interface method description // August 2006 // ATL server WebGIS services created by cheungmine@gmail.com ////////////////////// /// // about mtkwebgisservice //// ///////////////////////

: # Import "Account. tlb" rename_namespace ("AccountDriver ") Using namespace AccountDriver; In this way, you only need to define the Smart interface pointer IAccountPtr: IAccountPtr m_account; The call to functions and attributes in the Code component is the same as that in the first two methods, and the access is completed through m_account. Because of the introduction of the _ com_ptr_t template class and smart pointer, the # import command method is the simplest method to use the COM compone

. Imodalwindow:Ifiledialog. The show method is provided. Ifiledialogcustomize:FileopendialogAndFilesavedialogCom class implementation provides support for adding new controls in the dialog box. Ifiledialogevents: Implemented by the application to listen for events in the dialog box. Ifiledialogcontrolevents: Implemented by the application to implement the event function of the control added in the listener dialog box. We may also use some APIs that are not brand new, suchIshell

) PutBodyindex The position of the color coordinate to intercept，tiny parts like fingers can be clearlyHumanthe body is preserved. (Note: The conversion of the coordinate space is required because the camera location of color and depth is different)Sample ProcedureUse the Kinect SDK v2 preview to get Bodyindex, and show the sample programs that each body is color-coded and displayed. The 2nd section has an introduction to the stage of obtaining dataexcerpts from the commentary. The full contents

In the previous article, "COM Component Development Practice" (V)---from C + + to COM:P Art 2, we are going to use the COM library to load C + + objects, and in this article we will actually turn the C + + object into a COM object, and in the next article we will add multiple interface support to it. C + + objects become COM objects To turn a C + + object into a real COM object, you only need to do the following: 1 Implement the reference count of the interface. Therefore, each COM object req

Article 5: Learn about the historical reasons behind the _ com_ptr_t Design_ Com_ptr_t is a proprietary template class of Microsoft in VC. It encapsulates the QueryInterface (), AddRef (), and Release () operations of IUnknown, and provides some member functions to operate COM interface pointers. At the same time, _ com_ptr_t also simplifies the operations of the COM interface on reference count and query operations between different interfaces. To use the smart pointer _ com_ptr_t, you must fir

type. Sometimes, we usually consider the portability and compatibility of a class when considering its design. This leads us to exercise caution when using compiler-related features. Or more often, we can avoid some of the features that the compiler brings to us to pursue portability and compatibility with different platforms. However, before considering these problems, we should first consider the proper execution of the program. A program that allows errors, even if it can be transplanted at

Grid (1) Geometric Information The ID3DXBaseMesh Interface contains a vertex cache (used to store grid vertices) and an index cache (used to determine how a vertex forms a mesh of triangle units ). HRESULT ID3DXMesh: GetVertexBuffer (LPDIRECT3DVERTEXBUFFER9 * ppVB ); HRESULT ID3DXMesh: GetIndexBuffer (LPDIRECT3DINDEXBUFFER9 * ppIB ); Example: Code highlighting produced by Actipro CodeHighlighter (freeware)h

* cshtmlreport: gettabledispatch (){Assert (m_phtmldoc2 );Ihtmlelementcollection * All;M_phtmldoc2-> get_all ( all );Idispatch * distable;All-> item (colevariant (m_strtablename), colevariant (short (0), distable );Ihtmltable * pitable = NULL;Hresult hR = distable-> QueryInterface (iid_ihtmltable, (void **) pitable); // get table dispatchAssert (hR = s_ OK );Return pitable;} //************************************** *****************// Insert a row

) implements both these interfaces. Both the interfaces are shown below. interface IConnectionPointContainer : IUnknown { HRESULT EnumConnectionPoints( IEnumConnectionPoints **ppEnum) = 0; HRESULT FindConnectionPoint(REFIID riid, IConnectionPoint **ppCP) = 0;};interface IConnectionPoint : IUnknown { HRESULT GetConnectionInterface(IID *pIID) = 0;

following GitHub. Https://github.com/UnaNancyOwen/Kinect2SampleFigure 2 Data acquisition process for Kinect SDK v2 Preview (re-send ) "sensor"Get "sensor"//Sensorikinectsensor* Psensor; ......1HRESULT HRESULT=S_ok;hresult= Getdefaultkinectsensor (psensor); ......2if(FAILED (HResult)) {Std::cerr"Error:getdefaultkinectsensor"Std::endl; return-1;}

each data stream to wait for the event and then process the data. In the previous V1, the frame is independent, after the data is dropped, so want to read in the depth color, such as the operation, must use the memory copy, and multi-threaded read and write data will require mutual exclusion lock, very affect efficiency;Nuisetframeendevent, the Allframeready event in the C # interface, but waiting for all the data is not only too restrictive but inefficient.)Sample ProgramThe Kinect SDK v2 prev

detail. 1. Initialization1) Create an idirectsound8 interface object You can use the directsoundcreate8 () method to create a device object. This object usually represents the default playing device. The directsoundcreate8 () function is defined as follows. HRESULT DirectSoundCreate8( LPCGUID lpcGuidDevice, LPDIRECTSOUND8 * ppDS8, LPUNKNOWN pUnkOuter) The parameters are described as follows: Lpcguiddevice: guid of the device object to be created.

the index of the pointer of the function in vtbl so that it can call them? When a macro language calls a function in the COM component, three types of information can be used: the proid, function name, and parameters passed to the function. The macro runtime system must provide a simple method to execute functions with the old name of the function. This method is the idispatch interface. 1.2idispatch Interface In short, idispatch will receive a function name and execute it. IDL description of

Compile a transform filter to flip the image. In msdn, the "Writing transform filters" section lists the six basic steps for writing a transform filter. Follow these six steps one by one. 1. Select base class Derived from cbasefilter, three classes are used to compile the transform filter: ctransformfilter, ctransinplacefilter, and cvideotransformfilter. For the differences between the three base classes, see the description of msdn. We select the ctransformfilter class. After selecting the bas

, the constructor simply calls AddRef of the pointer. However, if the type is different, it first calls the QueryInterface of the pointer to obtain the same type of interface pointer. When the QueryInterface fails, the internal pointer is set to NULL. All the following code can be used to check whether the conversion is successful: Void func (iunknown * punk) (2) Assignment When assigning values, the following three events occur: 111. If the current pointer is not null, release the current po

After work, in the reading of the code written by foreigners, found a very interesting thing, we often say goto statement is harmful, mainly it jumps to jump, upset logic. But Goto also has benefits, such as single-exit, unified freeing of memory aspects, the next look at a function of MAPI initializationintMapiinit () {intResult =Dt_error; HRESULT HRESULT=S_FALSE; HANDLE Hlock=NULL; BOOL bLocked=FALSE; DWO

The method of the COM component is declared in IDL: [ID (1), helpstring ("Method Inputarray")] HRESULT Inputarray ([in] VARIANT vdata); Methods to establish an array in a script and invoke a COM component: When the array is large, like 100k, JavaScript is very inefficient when assigning values to arrays! Completion time, CPU occupancy rate, memory consumption is terrible. Instead, VBScript did a good job. Code for COM components: You can see from