ShowWindow vs SWP_SHOWWINDOW vs WS_VISIBLE [英] ShowWindow vs SWP_SHOWWINDOW vs WS_VISIBLE

问题描述

以下显示窗口的方法有什么区别:

What is the difference between the following methods of showing a window:

• ShowWindow 函数.
• 带有 SWP_SHOWWINDOW 标志的 SetWindowPos 函数.
• SetWindowLong 函数和 WS_VISIBLE 添加到 GWL_STYLE.

还有其他方法吗?

推荐答案

我认为它们大致相同，但每个都有额外的功能:

I think that they are mostly the same, but with additional capabilities for each one:

1. SetWindowLong 将 WS_VISIBLE 添加到 GWL_STYLE 可能是最不有趣的:如果有一个函数可以完全执行什么操作，为什么还要搞乱样式位你需要.
2. SetWindowPos 和 SWP_SHOWWINDOW 可以让你在显示窗口的同时设置它的位置和大小，用一个原子操作，让没人-程序或用户 - 可能会看到可见-未移动或移动-不可见的窗口.
3. ShowWindow 函数涉及很多魔法，尤其是在程序中第一次调用时.此外，它具有 SW_SHOWDEFAULT 标志，该标志很少使用，但不适用于任何其他方法，AFAIK.

1. SetWindowLong with WS_VISIBLE added to GWL_STYLE is proably the least interesting: why mess with style bits if there is a function that does exactly what you need.
2. SetWindowPos with SWP_SHOWWINDOW allows you to show the window and set its location and size at the same time, with a single atomic operation, so that no-one - program or user - may see the visible-unmoved or moved-invisible window.
3. The ShowWindow function has a lot of magic involved, particularly the very first time it is called in a program. Additionaly, it has the SW_SHOWDEFAULT flag that is little used but not available to any other method, AFAIK.

还有其他方法可以使窗口可见.在我的脑海中:

There are other ways to make a window visible. From the top of my mind:

1. 使用 WS_VISIBLE 标志集创建它.
2. DeferWindowPos 与 SetWindowPos 具有相同的标志.

1. Create it with the WS_VISIBLE flag set.
2. DeferWindowPos has the same flags than SetWindowPos.

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