com event system

event handling in native C + + when handling native C + + events, you set the event source and event sink separately using the event_source and event_receiver attributes, and specify Type=native. These attributes allow classes that apply them to fire and handle events in a native non-COM context. declaring an

32-bit COM components developed by. NET and C ++ are often included in a large application.ProgramGroup. However, after being deployed to a Windows 64-bit system, the error "retrieving CLSID 80040154 of com-class factory components" may occur. The solution is as follows: In the. NET project, right-click the project and choose Properties to open the project pr

When we use com to implement some function, we may use event to sink to other COM object to process the event happen. if we use VB or VC to receive the event, it has no problem to get the event. but when we use

Problem: Application-specific permission settings do not grant user NT a local boot permission for COM server application (CLSID {dcbca92e-7dbe-4eda-8b7b-3aaea4dd412b }) Uthority\system SID (s-1-5-18). You can use the Component Services Administration tool to modify this security permission. Solve: 1, run regedit. Then search dcbca92e-7dbe-4eda-8b7b-3aaea4dd412b, search to the right side of the bo

, addref, and release. HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void **ppvObject) { if (iid == IID__IAddEvents) { m_dwRefCount++; *ppvObject = (void *)this; return S_OK; } if (iid == IID_IUnknown) { m_dwRefCount++; *ppvObject = (void *)this; return S_OK; } return E_NOINTERFACE; }ULONG STDMETHODCALLTYPE AddRef() { m_dwRefCount++; return m_dwRefCount; }ULONG STDMETHODCALLTYPE Release()

ApplicationProgramAccidental stop of storing contact information (process com. Motorola. Contacts) When using systemapp, you can delete blurcontactssync.apk in the system software. Method 2: Use the re manager to enter system/appand Delete blurcontactssync.apk. In addition, the Application Event reminder (process:

Problem: ApplicationProgram-The specified permission settings did not grant the user nt authority \ System Sid (DCBCA92E-7DBE-4EDA-8B7B-3AAEA4DD412B) the local boot permission for the COM server application (CLSID is {S-1-5-18 ). You can use the component service management tool to modify this security permission. Solution: 1. Run regedit. Then search for the DCBCA92E-7DBE-4EDA-8B7B-3AAEA4DD412B, sea

Error: the COM Object of the type "system. _ comobject" cannot be forcibly converted to the class type "system. Data. sqlclient. sqlconnection ". Indicates that the type instance of the COM component cannot be forcibly converted to the type of the COM component; This is

Using WMI to obtain system information procedures As an example of obtaining a native system, the process of obtaining system information is as follows: 1 initialization of the COM library Since the WMI application was written in C + + based on COM technology, the

We are in the operation of the computer will inevitably encounter failure prompts the window, especially in the Win7 operating system, after all, Win7 security requirements are also high, although often pop-up error window so that we are disgusted, but we can use the wrong hint window to find out the problem, in order to better solve the fault problem. Recently, a user in the Win7 flagship version of the only inexplicable automatic pop-up "

This.speecher.SpeakAsync (Texttospeak); ErrorCOM objects of type ' system.__comobject cannot be cast to interface type ' System.Speech.Internal.SapiInterop.ISpDataKey '. This operation failed because the COM component call to the interface with IID ' {14056581-e16c-11d2-bb90-00c04f8ee6c0} ' QueryInterface failed with the following error: This interface is not supported (exception is from hresult:0 x80004002

We are in the operation of the computer will inevitably encounter the fault prompt window, especially in the Win7 operating system, often pop-up error window so that we are disgusted, but we can use the wrong hint window to find out the problem, in order to better solve the fault problem. Recently, there is a user in the Win7 system just inexplicably automatic pop-up "C