Query informationOne of the main functions of WMI is to query the WMI repository for information about classes and instances, we can call a synchronous query, or we can call an asynchronous query.
A synchronous query is a query that executes at the current execution, and an asynchronous query needs to start another thread to query, and after the query has finished, call the defined interface (similar to a callback function) to handle the query results.
Synchronous query is suitable for querying
the artifact--step-one.
Startup Failure Reason
Once the Window service program is started, a run method is called in the WinMain method
Collapsehresult Run (_in_ int nshowcmd = sw_hide) throw ()
{
HRESULT hr = S_OK;
t* PT = static_cast
The Run method calls the Pt->runmessageloop () method for a while loop, which prevents the WinMain method from returning, causing the program to end.
After debugging, found that execution, the Pt->premessageloop method returned S_FALSE, because
small example of context conversion in the program. If you test this code, it will run, but please
Do not do this within your own application.
Private Sub Dostuff ()
% >
This is End Sub
% >
Programmatic code has some other benefits as well. First you'll find it easier to reuse the parts of the code that are included in the program. Secondly, to
Fewer lines of code are required to achieve the same purpose. Third, you will begin to develop a large reusable code base. At first it's
The form is.
Summary
This article describes the use of VC + + ATL (Active Template Library), using the IDTExtensibility2 interface to add a simple COM plug-in (addin) to Microsoft Word, Adding visual parts, such as toolbar buttons and menus, and adding a way to respond to events, and at the end of the paper, provides a simple way to implement a hybrid programming with Office macros.
When it comes to office-related programming, it's possible that VBA (Visual Basi
Microsoft c#™ or Visual Basic. NET and inherit from ServicedComponent. The following are examples of managed code for a simple managed component:
Using System;
Using System.Reflection;
Using System.Runtime.InteropServices;
Using System.EnterpriseServices;
[Assembly:applicationname ("Cssoap")]
[Assembly:applicationactivation (Activationoption.server,
soapvroot= "Cssoap")]
[Assembly:assemblykeyfile ("Cssoap.snk")]
Namespace Cssoap
{
public interface Icalc
{
Double Add (double Value1, double Val
Tags: retrieving file log window CDATA LDA component Get StrRetrieving a component of the CLSID {00024500-0000-0000-c000-000000000046} in a COM class factory failed because of the following error: 80070005 access denied. (Exceptions are from hresult:0x80070005 (e_accessdenied)).In Batchimportentrytable.getexceldata (String FileName)Retrieving a component of the CLSID {00024500-0000-0000-c000-000000000046} in a COM
Label:Retrieving a component of the CLSID {820280E0-8ADA-4582-A1D9-960A83CE8BB5} in a COM class factory failed because of the following error: 80040154 There is no registered class (Exception from hresult:0x80040154 (Regd B_e_classnotreg)).IIS program pools, advanced settings: Enabling 32-bit applicationsRetrieving a component of the CLSID {820280E0-8ADA-4582-A1D9-960A83CE8BB5} in a COM class factory failed
Resvr32 the name of the control referenced in. NetIf the registration is successful, the problem does not occur but if the control is registered successfully in a x64-bit system, the error is prompted because most third-party written COM controls only support 32-bit systems, find the project with the reference control in VS--〉 property--〉 generate--〉 general---) Target platform---) Select X86 to solve. The problem of the control is the Opcdaauto.dll f
Tags: style version throwable use height manage Ima ESS nbsp
Ylbtech-java-java-com-util-common-service:serviceexception.java
1. back to top
1. PackageCom.shineyoo.manager.util.common.service;/*** Service Layer Common exception, which triggers a transaction rollback when thrown from a function in a spring managed transaction. *@author */ Public classServiceexceptionextendsRuntimeException {Private
The database used by the customer is older, SQL Server 2008, and two SQL files are exported.With the help of OPS, SQL Server 2008 is installed and configured in the WIN10 system.Open the first file, no problem, build the appropriate database, run the script, you can import.The second file encountered a problem, always error "the call to COM components returned a false HRESULT E_fail"The solution that the search engine gives is to start and configure t
Tags: Microsoft Access cat Information Strong Support access services 32-bitException information is: System.UnauthorizedAccessException: Failed to retrieve component of CLSID {000209ff-0000-0000-c000-000000000046} in COM class factoryFind a solution on the Internet
1. In Start, run, enter Dcomcnfg.exe to start the Component Services
2: Double-click "Computer", "Component Services", "My Computer", "DCOM Configuration"
3: Find "Microso
Use Visual C #. Net to generate an office com external program
For the Microsoft Visual Basic. Net version in this article, see 302896. For Microsoft Visual Basic 6.0 in this article, see 238228. For Microsoft Visual C ++ 6.0 in this article, see section 230689.
Content of this task
Summary
Idtexensibility2 Interface
Onconnection
Ondisconnection
Onaddinsupdate
Onstartupcomplete and onbeginshutdown
COM programming
In-process COM servers (in-process COM server)
In-process COM server (in-process COM server) has been introduced briefly before, here, only some need to understand, understand the knowledge points, and then programming may be better; in-process servers are
COM (Component Object Model, Component Object Model) is a binary and network standard created by Microsoft. It is also a component standard that Microsoft has vigorously promoted and widely recognized. In the com standard, the COM object is well encapsulated, and the customer cannot access the implementation details of the object. The only access channel provided
Go to http://support.microsoft.com/kb/302901/zh-cnoverview
Both Microsoft Office XP and Microsoft Office 2003 support a new unified design structure used to generate applicationsProgramAdd-on programs to enhance and Control Office applications. These external programs are called com external programs. This article gradually discusses the Office com external program and describes how to use Microsoft Visual
COM object createdAnd then how to call the COM component. Here is the method for calling the COM Object in C ++.
There are generally three methods to create a COM object. You can create an object normally and use the cocreateinstance function. If you create an object in a remote system, use the cocreateinstanceex funct
What kind of software products do users need? This is a multiple-choice, but efficient, robust is sure to be selected. What does a software developer do to satisfy a user's needs? You must ensure that the upgrade application does not break backward compatibility with previous versions. You must extend the system service without relying on a specific operating system. Object-oriented programming is clearly a revolutionary change. Using object-oriented design method, we can easily abstract the pro
Software methods and COM Support Based on Component Reuse
Zhang YuComputer College, Huazhong University of Science and Technology
SummaryAs a hot topic of research, component models have emerged in an endless stream in recent years. For the interoperability between them, a public component must be available.The underlying framework analyzes various practical factors. com is a feasible choice. This article d
InitializationPlugin.DL_Speak.ini ("yxme64uttbjhv0r620180302005400")Get the pronunciation clerk that exists in the systemSS = Plugin.DL_Speak.GetLanguageMessageBox SSSet the pronunciation of the system voice library 0 1 2 3Plugin.DL_Speak.SetLanguage 0Set pronunciation speed +50Plugin.DL_Speak.Rate 50Read the custom textPlugin.DL_Speak.Speak ("But Tretfdgfd of Guangdong Province, a wide range of widely-held Guangdong province Guangdong province")Convert text to WAV audio files and save them in a
Recently made an ATL-based control, designed an interface, want to return multiple parameters, but through JavaScript but can not get the return value, originally thought is the problem of their own interface, and later found on the Internet a lot to find that the original MSDN has a clear saying:JavaScript does not support passing parameters by reference. JavaScript would make copies of these variables and pass them by value when calling methods then take By-reference parameteRs. Thus, you cann
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