vb6.0 software introduction
Visual Basic 6.0|VB is an event-driven programming language developed by Microsoft that includes an assisted development environment. By any measure, VB is the most spoken language in the world—not just in terms of the number of developers who praise VB but also the number of developers who complain about VB. It is derived from the BASIC programming language. VB has a graphical user interface (GUI) and a rapid application development (RAD) system. You can easily use DAO, RDO, and ADO to connect to the database, or easily create ActiveX controls. Programmers can easily use the components provided by VB to quickly build an application.
vb6.0 software features
[Visual Basic language features]
The central idea of VB is to be easy to use for programmers, whether they are novices or experts. VB uses a GUI system that can easily create applications, but can also develop fairly complex programs. A VB program is a form-based arrangement of visual components, and code is added to specify the properties and methods of the components. Because some of the default properties and methods are already defined in the component, programmers can complete a simple program without writing much code. In past versions, the performance issue of VB programs has always been put on the table, but with the rapid increase in computer speed, there are fewer and fewer debates about performance.
The addition and change of form controls can be achieved using drag-and-drop technology. A toolbox filled with controls displays available controls (such as text boxes or buttons). Each control has its own properties and events. Default property values are provided when the control is created, but can be changed by the programmer. Many attribute values can be changed with user actions and modifications during runtime, thus forming a dynamic program. For example: Code that can change the position of the control is added to the form's size change event. Whenever the user changes the window size during runtime, the control will also change its position. By adding the corresponding code to the text change event in the text box, the program can automatically translate or prevent the input of certain characters when text is entered.
A VB program can contain one or more forms, or a main form and multiple subforms, similar to an operating system. Dialog windows with little functionality (such as forms without maximize or minimize buttons) can be used to provide pop-up functionality.
VB components can have user interfaces or not. This way the server-side program can handle the added modules.
VB uses the reference counting method to perform garbage collection. This method contains a large number of objects and provides basic object-oriented support. As more and more components appear, programmers can choose the extension libraries they need. Unlike some languages, VB is not case-sensitive, but it can automatically convert keywords to standard case, and force the variable names of entities in symbol table entries to follow writing rules. String comparisons are case-sensitive by default, but this feature can be turned off.
VB allows a large number of external controls to have their own living space. A large number of third-party controls are provided for VB. VB also provides methods to create, use and reuse these controls, but due to language issues, it is not simple to create another from one application.
vb6.0 terminology explanation
Controls: Simply put, controls constitute or build Visual Basic Graphical tools for applications, including forms, buttons, check boxes, list boxes, data controls, table controls, picture controls, etc...
Events: Actions triggered by the user or the operating system, such as keystrokes, mouse clicks (Click), double mouse clicks (DblClick), time limits, or receiving data from a port.
Method: Program code embedded in the object definition that defines how the object processes information and responds to an event. For example, a database object has the basic elements of a program with methods for opening a recordset and moving from one record to another. It contains properties that define its characteristics, methods that define its tasks, and methods that identify the events to which it can respond. Controls and forms are Visual Examples of all objects in Basic.
Object: A control, form, etc. can be regarded as an object.
Process: A code segment written to complete certain specific tasks. A process is usually used to respond to specific events, and can also be used as a user-defined function in an application.
Attributes: Attributes are specific descriptions of the properties of each object that make up the user interface. For example, the size, position, color, width, height, etc. mentioned in the above "object" are all called properties of the control. Properties determine an object's appearance and sometimes its behavior. Most of the properties of objects are pre-defined in VB, but some properties need to be defined during the application process. Properties can provide data to objects and retrieve information from objects.
vb6.0 update log
Working day and night just so you can be happier
are all gone!
Huajun editor recommends:
The vb6.0 software takes up little memory, has stable performance, is free of any bundles, is green and safe, and is truly a conscientious software! This site also hasAlphaEbot action editing software,He Xiaoxiang programming client,Automated testing tool AutoRunner,Easy GUI,Little turtle LOGO language, available for you to download!
Your comment needs to be reviewed before it can be displayed