Access入门教程15.2为什么要用宏
先看个例子 有这样一个窗体 上面有一个数据表 现在在这个数据表中添加一个功能 用一个文本框输入要查询的内容 而用一个 查询 按钮来完成查询的工作 并将查询后的数据打印在报表上 在窗体那一课里讲的命令按钮向导就能实现这个功能 但对于每个控件来说 要实现
先看个例子
在窗体那一课里讲的命令按钮向导就能实现这个功能
要让这些控件实现一定的功用
使用宏非常方便
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
What is the priority of C language !x?
Apr 03, 2025 pm 02:06 PM
The logical non-operator (!) has the priority next to parentheses, which means that in expressions, it will precede most other operators. Understanding priority not only requires rote memorization, but more importantly, understanding the logic and potential pitfalls behind it to avoid undetectable errors in complex expressions. Adding brackets can clarify expression intent, improve code clarity and maintainability, and prevent unexpected behavior.
Best practices for C language default
Apr 03, 2025 pm 03:48 PM
The best practices of default in C language: place it at the end of the switch statement as the default processing for unmatched values; it is used to handle unknown or invalid values to improve program robustness; avoid duplication with case branches to maintain conciseness; comment clearly on the purpose of the default branch to improve readability; avoid using multiple defaults in one case to maintain clarity; keep the default branch concise and avoid complex operations; consider using enumeration values as case conditions to improve maintainability; in large switch statements, use multiple default branches to handle different situations.
Tutorial on how to represent the greatest common divisor in C language functions
Apr 03, 2025 pm 11:21 PM
Methods to efficiently and elegantly find the greatest common divisor in C language: use phase division to solve by constantly dividing the remainder until the remainder is 0. Two implementation methods are provided: recursion and iteration are concise and clear, and the iterative implementation is higher and more stable. Pay attention to handling negative numbers and 0s, and consider performance optimization, but the phase division itself is efficient enough.
Front-end FileReader file reading: Why do you need to instantiate first and then read?
Apr 04, 2025 pm 01:48 PM
Regarding FileReader instantiation and file reading In front-end development, we often need to process files uploaded by users. use
What are the benefits of multithreading in c#?
Apr 03, 2025 pm 02:51 PM
The advantage of multithreading is that it can improve performance and resource utilization, especially for processing large amounts of data or performing time-consuming operations. It allows multiple tasks to be performed simultaneously, improving efficiency. However, too many threads can lead to performance degradation, so you need to carefully select the number of threads based on the number of CPU cores and task characteristics. In addition, multi-threaded programming involves challenges such as deadlock and race conditions, which need to be solved using synchronization mechanisms, and requires solid knowledge of concurrent programming, weighing the pros and cons and using them with caution.
Unused variables in C/C: Why and how?
Apr 03, 2025 pm 10:48 PM
In C/C code review, there are often cases where variables are not used. This article will explore common reasons for unused variables and explain how to get the compiler to issue warnings and how to suppress specific warnings. Causes of unused variables There are many reasons for unused variables in the code: code flaws or errors: The most direct reason is that there are problems with the code itself, and the variables may not be needed at all, or they are needed but not used correctly. Code refactoring: During the software development process, the code will be continuously modified and refactored, and some once important variables may be left behind and unused. Reserved variables: Developers may predeclare some variables for future use, but they will not be used in the end. Conditional compilation: Some variables may only be under specific conditions (such as debug mode)
Why does my RxJS code not take effect when operating on streams?
Apr 04, 2025 pm 06:27 PM
Why doesn't my code take effect when using RxJS to operate on streams? Learning RxJS...
Why is there no output when using RxJS to process stream elements? How to use of and from operators correctly?
Apr 04, 2025 pm 06:36 PM
Discussion on problems when using RxJS to operate on elements in streams in learning and using RxJS...
