绘制在Mac OS X的桌面上 [英] Drawing on desktop in Mac OS X

问题描述

我想创建程序的模拟 conky 。

I want to create analog of program conky. What is the best way to draw information on a OS X desktop?

推荐答案

NSWindow有一个方法， setLevel：，它允许您控制窗口相对于其他窗口的位置。从我自己的经验，你可能想尝试喂它 kCGDesktopIconWindowLevel ，并调用 setHasShadow：NO 想。要实际做图，你会在你的窗口中放一个自定义的NSView子类，并创建一个没有框架的窗口（见 NSBorderlessWindowMask ）和transparent（ window setBackgroundColor：[NSColor clearColor]]，[self setOpaque：NO]; ）。

NSWindow has a method, setLevel:, that lets you control how the window is positioned compared to other windows. From my own experience, you might want to try feeding it kCGDesktopIconWindowLevel, and calling setHasShadow:NO to implement the look you want. To actually do the drawing you would put a custom NSView subclass in your window, and create the window without a frame (see NSBorderlessWindowMask) and transparent ([window setBackgroundColor:[NSColor clearColor]], [self setOpaque:NO];).

你可能还需要一个< =http://www.cocoadev.com/index.pl?DontExposeMe =nofollow noreferrer>查看这篇文章，以在Expose事件期间将您的窗口固定到桌面。

You might also want to take a look at this article to keep your window pinned to the desktop during an Expose event.

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