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
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
Http://www.allaboutprogram.com opened a new layout: Class Library discussion, hope to be able to explore the popular class library, not only can get the use of experience, but also for their future design class library to specify the direction. ATL (Active Template Library) is also one of the objects discussed on this page. It is a set of support libraries developed by Microsoft for com (Component Object Model, Component Object Model. Generally, it is
Http://china.udotnet.com/cnudotnet_num_416.aspx
One of the new transactions: transactions in DOTNET and COM + (1)One of the new transactions: transactions in DOTNET and COM +
--------------------------------------------------------------------------------
Stingy god
2002-4-16
Article type: In-Depth
Difficulty level: 6/9
Version: 2.32
COM + appeared earlier tha
COM component program: module, which can be a dynamic connection library (DLL) executable program (exe), called in-process component) External process component (out-of-process component ).
COM Object: it is based on binary executable code. Therefore, COM objects are language-independent. This feature makes it possible to interact with Component Objects develop
PHP can operate COM and DCOM objects on Win32 platforms. 1. I have created a DLL to calculate something. Is there any way to run this DLL in PHP? 2. What does 'unsupported variant type: xxxx (0 XXXXX) 'mean? 3. Is it possible to operate on visual objects in PHP? 4. Can I store COM objects in the session? 5. How can I capture com errors? 6. How can I generate DLL
The previous article said how to design a pseudo-com, now let's see how the real COM library is modular.First of all, the previous section of our implementation of pseudo-com there is nothing to make you uncomfortable place? Yes, I believe a lot of people are very uncomfortable with the need to load DLLs and export interfaces themselves , Microsoft is also very u
Differences:
(1) Static Connection Library as the targetCodeIs linked
(2) the dynamic Connection Library and the target code are two parts.
(3) The COM component is called by registering the location and interface of the dynamic library in the registry.
Advantages and disadvantages:
(1) Static disadvantage: Make the targetProgramIncreased volume, not flexible(2) Advantages of Dynamic Link Library: to modularize the program, as long as the in
What is a COM component?What kind of software products do users need? This is a multi-choice question, but it is highly efficient and robust. How can a software developer meet users' needs? Ensure that the backward compatibility with previous versions is not damaged during application upgrade. System services must be extended without a specific operating system. Object-Oriented Programming is obviously a revolutionary change. Using an object-oriented
Computer" security settings here, by modifying the registry to open this option, you can give us more choices when dealing with ActiveX controls, and have a greater impact on local computer security.Here's how to do this: open "Run" from the Start menu, enter Regedit.exe in the "Run" dialog box, open the Registry Editor, and click the "" "number in the previous page to expand to: Hkey_curre-nt_user\software\microsoft \windows\currentversion\internetsettings\zones\0, find the DWORD value "flags"
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.