仅使用标准C ++的图形？ [英] Graphics using Standard C++ only?

问题描述

我只想知道Standard C ++是否允许GUI编程？

I just want to know whether Standard C++ allows GUI programming?

这有两个方面：

1. 像窗口，对话框，按钮等UI的窗口小部件


2. 绘制圆形，矩形，样条等图形

我一直在使用Qt作为UI&没有看到任何人在C ++只做GUI。

I have been using Qt for my UI & haven't seen anybody doing GUI in C++ only.

PS：我只关心C ++语言，我知道Java允许GUI编程！

PS: I am concerned with C++ language only, I know that Java allows GUI programming!

UPDATE：在此处添加了一个新问题：

UPDATE: A new question was added here: How frameworks like Qt create GUI, if C++ has no functionality for that?

推荐答案

不，这是不可能的。 C ++可以在许多设备上工作，其中一些设备根本没有这种功能。

No, this isn't possible. C++ works on many devices, some of which simply don't have that capability.

Qt可以做到这一点，通常是因为它运行的操作系统提供的功能。它通常暴露为一组C函数，在实践中意味着它们可以通过Qt中的C ++代码调用。操作系统内部使用什么，谁知道。

Qt can do this, usually because the Operating Systems on which it runs do offer that functionality. It's usually exposed as a set of C functions, which in practice means they're callable by the C++ code in Qt. What the OS uses internally, who knows. It may even leave some of the work to the GPU nowadays.

在某些嵌入式系统上，Qt只是获取了一个指向屏幕内存的指针，并且执行了所有的像素操作本身。这不是一个解决方案，当你必须与多个应用程序共享屏幕，但对于单功能设备，它绝对有效。

And on some embedded systems, Qt just gets a pointer to the screen memory, and does all the pixel manipulations itself. That's not a solution when you have to share the screen with multiple applications, but for single-function devices it definitely works.

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