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
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
like multi-inheritance. Class Name = Class (Interface Class 1, Interface Class 2... ), And then the declared interface class will overload the virtual method of the inherited class to implement the interface function.
The following are the declarations of iinterface, iunknown, and idispatch. Do you know the connection between these important interfaces? The interfaces of any COM object are ultimately inherited from iunknown, while the Automation Object also includes idispatch. We will see its r
looking for. It is a class factory object, and a class factory object knows how to instantiate any other class. The indirect access at the first layer allows the details of component creation to be specified. If it simply and directly returns an object pointer we are looking for, it indicates that the object already exists, we will not be able to set and control any parameters about the constructed object.
Dllgetclassobject returns an iclassfactory interface, which is derived from iunknown and
work properly in the protection mode, and describes some APIs in the sample code. Each topic corresponds to one (or one) button.
Solution under protection modeSeveral new APIs are added in IE 7, which are located in ieframe. in DLL, plug-ins can use them to execute functions restricted in the protection mode, either directly through iepmapi. lib links to these Apis. You can also use loadlibrary ()/getprocaddress () to obtain the function pointer at runtime. If you want the plug-in to load norm
D3dxmatrix * winapi d3dxmatrixlookatlh (d3dxmatrix * pout,Const d3dxvector3 * peye,Const d3dxvector3 * Pat,Const d3dxvector3 * pup);This function is used to control the camera and view matrix.Peye's eye position and observation direction.Pat is the forward and backward direction of the camera, left or right. Up or down.Pup is the upward direction.Matrixanimation class simplifies the processing of direction observation.// Matrix AnimationNamespace matrixa {# Include Class matrixanimation {
Public
data type, dimension, and lower bound and length of each dimension in the array. Com provides functions to obtain these array parameters.
Obtain the type and return the enumerated values of the type starting with "VT:
Hresult safearraygetvartype (
Safearray * PSA,
Vartype * pvartype );
Returns the dimension of the array:
Uint safearraygetdim (
Safearray * PSA );
Obtain the attributes of each dimension and return the upper and lower bounds of the
function to create an empty id3dxbuffer object.Hresult d3dxcreatebuffer (DWORD numbytes, lpd3dxbuffer * ppbuffer );
Create a cache that can hold 4 data recordsId3dxbuffer * buffer = 0;D3dxcreatebuffer (4 * sizeof (INT), buffer );
The. x format is the DirectX-defined format, which is strongly supported by the d3dx library. The d3dx Library provides functions for loading and saving XFile files.
This method creates an id3dxmesh object and loads the geometric data in XFile to this object.
The following describes the process in 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: G
real power of an interface is that all classes inheriting this interface can be processed by the customer in the same way.
//////////////////////////////////////// ////////////////////
Chapter 2 QueryInterface Functions
1. Interface query:The customer interacts with the component through an interface. Other interfaces of the customer query component are also completed through interfaces.
. This interface is iunknown.The iunknown interface definition is included in the unknown. h header file of
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
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