Functions that get (or create) and release (or destroy) a device context as we saw in earlier chapters, you need a handle to a device context in order to draw.

获得(或创建)和释放(或销毁)关联设备的函数-正如我们在前几章看到的，你需要关联设备的句柄以便绘制。

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Releases the handle to the device context.

释放设备上下文的句柄。

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Although these functions are considered to be part of GDI, unlike most GDI functions they do not require a handle to a device context.

尽管这些函数被认为是GDI的一部分，但是并不像大多数gdi函数，它们不需要关联设备句柄。

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