autocad ole

The distinction between components (Component) and objects (object) is defined first:A component is a reusable module that is a business object (Rules object) that consists of a set of processes, data encapsulation, and user interfaces. The component looks like an object, but does not conform to the academic definition of the object.The main differences are:1) A component can be used in another application called a container (sometimes referred to as a bearer or host) or as an independent proces

between ODBC and a specific database based on information such as the database location, database type, and ODBC driver provided by the data source. This allows the application to establish a connection to the corresponding database as long as the data source name is supplied to the ODBC,ODBC.Second, OLE DB The origin of Ole-db As data sources become increasingly complex, it is likely that to

Original:ODBC, OLE DB, ADO, ADO. A brief history of the evolution of net1. Evolution HistoryThey are gradually appearing in the order of this time, prehistoric->odbc->oledb->ado->ado.net.Look at the MDAC definition on the wiki: "Microsoft Data Access Components (MDAC) is the application development interface that Microsoft has developed specifically for the data access function, as a unified data access for Microsoft (Universal. UDA) solution, the ori

AutoCAD for two-dimensional drawing, detailed drawing, design documents and basic three-dimensional design, has become a widely circulated international drawing tools. Here are the questions I found during my use:1, three-dimensional modeling operation is not convenientThree-Dimensional Entity Object Properties dialog box has less information. For the two-dimensional graphics, some of his graphical elements of the object characteristics of the record,

Using VC build hook to target multiple AutoCAD versions [Update: Visual Studio 2010 now using des a built in feature called Native multi-targeting that replaces the need for VC build hook. ReadThis blog postTo learn how to use vs 2010 to target older versions of Visual Studio.] I createdVC build hookUtility in order to make it possible to use the current Visual Studio IDE for building ObjectARX applications that target any version of

getcaddrawingdataset (string directorypath, string filename){// Create a workspacename objectIworkspacename pworkspacename = new workspacenameclass ();Pworkspacename. workspacefactoryprogid = "esristmcesfile. cadworkspacefactory ";Pworkspacename. pathname = directorypath; // Create a caddrawingname objectIdatasetname pdatasetname = new caddrawingnameclass ();Pdatasetname. Name = filename;Pdatasetname. workspacename = pworkspacename; // Open the CAD DrawingINAME pname = (INAME) pdatasetname;Retu

operations of translation and scaling. Related commands Create annotation Association -- dimreassociate "Annotation" menu: Re-associate annotation (N) Command:Dimreassociate Select the tag to be reassociated... Select object: (select the dimension object to be associated) Select object: Note: The prompt "select the annotation to be re-associated... it does not mean to simply process the "already associated" annotation, but also the non-associated annotation. Therefore, it i

Http://download.autodesk.com/media/adn/ACAD_DotNET_API_Chinese_2.zip Autodesk released the English version of the latest 2012 tutorial series video tutorials for AutoCAD. net api in the Developer Center. Jun Qilian also made a serialization recommendation here. To make it easier for Chinese friends to watch, I will record the Chinese version and release it soon. This is the 2nd lecture on AutoCAD. NET use

Common Methods for clearing AutoCAD viruses (Acad. FAS, Acad. LSP) Acad. FAS and ACAD. LSP are the most common CAD viruses. Because it is not harmful to the system itself, but it is not a prank program, so most anti-virus software does not work for them, the following describes the manual deletion method. Step 1: Search for the hard disk and the Acad in the USB flash drive. FAS, LCM. FAS, Acad. LSP, acadapp. LSP, acadappp. five LSP files are deleted a

Brief introduction of 6.1.1 points Sometimes the user asks for an isometric division of an object and needs to be labeled at the points. For example, road lights, boundary symbols, and so on. AutoCAD provides two ways of dividing objects (figure 6-1). (1) DIVIDE: the "DIVIDE" command divides the specified objects evenly into segments and identifies them with a point or block object. This command requires the user to provide the number of segments, a

Database Connection Technology-ole db, database connection oledbThe previous blog introduced ODBC and JDBC. This is a brief introduction to ole db. The ODBC summary does not know whether it is not posted on the blog or not on this blog. I will try again. If not, I will try again later. Okay. Let's get started.Before that, we have introduced that the basic structure of ODBC and JDBC is the same, that is, the

Thinking about OLE DB and. NET You and I are not acquainted. But in the face of a real problem, "What is software?" "I don't have the right answer," he said. Imagine a scene where you're concentrating on buying useless things (mainly souvenirs) in a souvenir shop, so you can be happy to meet your friends and relatives at the airport. At this time, often someone will ask you: "The first time?" A business trip or a vacation? ” So if you're doing soft

Shortcut Keys are indispensable for any software application. Shortcut Keys can greatly improve your work efficiency and make your technology more refined! (Related3D design tutorial) You can use Alt + letters to quickly select commands. This method can be used to quickly operate most software.Alt + tk Quick SelectionAlt + NL linear AnnotationAlt + VV4 quick creation of four ViewsAlt + MUP extract ContourCTRL + B: Grid Capture Mode Control (F9)CTRL + C: copy the selected object to the clipboard

How to save a high version of AutoCAD files to a low version format in your computer Method One: 1, open the file and click on the upper left corner of the "file"-"Save as"; 2, in the pop-up "graphics Save as" dialog box, set the filename, and then click the "File Type" Drop-down box, from which to select a lower version of the CAD file save format, click Save. Method Two: 1, open the CAD, click on the menu bar "Tools"-"op

2.6.1 Create a new graphic After the AutoCAD system is started, the user can invoke the "new" command to create a new graphic, which is called by: Toolbar: "Standard (Standard)" Menu: "File" → "New ... (new) " Command line: New When this command is invoked, the system displays the Today window, where users create new graphics using templates, wizards, and more, as described in 3.1. 2.6.2 Open an existing graphic Users can use the "open" command

/undo]: The specific roles are as follows: (1) "Close": a closed, open, multiple-segment line. Note that even if the start and end points of a multi-line line are at the same point, AutoCAD still considers it open and must use this option to close it. For closed multi-line lines, the entry is replaced by Open, which works the opposite way. (2) Join (merge): Merges a line, arc, or multi-segment line object with other segments of the line that coinci

Features and use of 8.5.1 list display The list in AutoCAD displays commands for displaying database information about objects, such as layers (Layer), handles (Handle), and so on. In addition, depending on the selected object, the command also gives the additional information associated with it. The call method for the list command is: Toolbar: "Inquiry (query)" → Menu: "Tool (tool)" → "Inquiry (query)" → "list (listing display)" Command line: L

Iv. com, Ole, ActiveX, and COM + Many of Microsoft's technologies, such as Ole, ActiveX, and DirectX, are built based on the COM technology. Microsoft also uses a large number of COM components to customize their applications.ProgramAnd the operating system. So what is com? The so-called COM (Component Object Model) is a specification that describes how to establish dynamically changeable componen

and a specific database. In this way, as long as the application provides the data source name to ODBC, ODBC can establish a connection with the corresponding database. Ii. OLE DB The origin of OLE-DB As data sources become increasingly complex, today's applications may need to obtain and process data from different data sources, and then output the processed data to another data source. What's more tro

RichEdit is an OLE container that uses RichEdit to display IM chat content, typically using an OLE object to implement an emoticon animation in RichEdit.There are two ways to draw a trigger expression:1. Refresh message from RichEdit.2. Refresh message from the expression animation timer.To refresh the display of an emoticon, you first need to know where the expression appears.During the first refresh proce