如何使用winapi实现类似Steam的窗口? [英] How to achieve Steam-like window using winapi?

问题描述

这是正在调整 Steam 客户端窗口大小的屏幕截图.

This is a screenshot of Steam's client window being resized.

Steam 的客户端窗口有两个很酷的功能.

Steam's client window has two cool features.

1. 响应迅速的自定义窗口.
2. 酷玻璃调整大小效果，与标准窗口不同(认为可能是与 1 密切相关的副作用)

假设我想使用 winapi 创建类似的窗口.我该怎么做?

Let's say I wanna create similar window using winapi. How can I do it?

我问的不是小部件管理相关的东西，而是技术 winapi 技巧.

I don't ask about widget-management related stuff, but about technical winapi tricks.

推荐答案

基本上，您几乎可以对窗口执行任何操作.但大部分技巧都需要手动实现.

Basically, you can do almost anything with your window. But most of the tricks are to be implemented manually.

1. 我不知道什么是非常敏感".如果您的意思是窗口没有标准边框，那么实现起来很容易:创建WS_POPUP 窗口时不要指定WS_BORDER 和WS_CAPTION.之后，您必须自己绘制边框和标题.处理 WM_ERASEBKGND 和 WM_PAINT 消息，绘制背景，菜单，一切照常.
2. 在我看来，这种效果更像是一个错误.它是这样发生的:窗口被调整大小，它得到一个 WM_SIZE 消息，处理它，Windows 发送一个窗口忽略的 WM_ERASEBKGND 消息.因此，系统在尚未填充新窗口图像的新窗口框架周围绘制新阴影.在这里，我们得到了这种很酷的玻璃效果:带有窗户空气阴影的窗户的旧图像.您可以尝试禁用窗口阴影并查看此效果.

1. What is 'very responsive' I don't know. If you mean that the window has no standart border, it is easy to implement: do not specify WS_BORDER and WS_CAPTION when creating a WS_POPUP window. After that you will have to draw a border and a caption yourself. Handle WM_ERASEBKGND and WM_PAINT messages, draw background, menus, all as usual.
2. This effect seems to me more like a bug. It happens this way: the window is resized, it gets a WM_SIZE message, processes it, Windows sends a WM_ERASEBKGND message which the window ignores. Thus, the system draws a new shadow around new window frame which is not yet filled with new window image. And here we get this cool glass effect: old image of underlaying windows with a windows aero shadow. You can try to disable windows shadows and look at this effect.

为了创建自定义大小调整边框，您可能会发现这些函数很有用:LoadCursor、SetCursor、MoveWindow.

In order to create a custom resizing border, you might find useful these functions: LoadCursor, SetCursor, MoveWindow.

为了绘制自定义边框，您可以使用标准 GDI 函数.您也可以创建一些子窗口并将绘图委托给它们.这是winapi的基础.

In order to draw your custom borders, you can use standart GDI functions. Also you can create a handful of child windows and delegate drawing to them. This is basics of winapi.

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