ScaledPixmapArgument Struct

struct QIconEngine ::ScaledPixmapArgument

This struct was introduced in Qt 5.9.

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公共变量

QIcon::Mode	mode
QPixmap	pixmap
qreal	scale
QSize	size
QIcon::State	state

详细描述

This struct represents arguments to the virtual_hook () function when the id parameter is QIconEngine::ScaledPixmapHook .

The struct provides a way for icons created via QIcon::fromTheme () to return pixmaps that are designed for the current 设备像素比率 . The scale for such an icon is specified using the Scale directory key in the appropriate index.theme 文件。

Icons created via other approaches will return the same result as a call to pixmap () would, and continue to benefit from Qt's "@nx" high DPI syntax .

另请参阅 virtual_hook (), QIconEngine::IconEngineHook ，和高 DPI 图标 .

成员变量文档编制

QIcon::Mode ScaledPixmapArgument:: mode

This variable holds the requested mode of the pixmap.

另请参阅 QIcon::Mode .

QPixmap ScaledPixmapArgument:: pixmap

This variable holds the pixmap that is the best match for the given size , mode , state ，和 scale . This is an output parameter that is set after calling virtual_hook ().

qreal ScaledPixmapArgument:: scale

This variable holds the requested scale of the pixmap.

QSize ScaledPixmapArgument:: size

This variable holds the requested size of the pixmap.

QIcon::State ScaledPixmapArgument:: state

This variable holds the requested state of the pixmap.

另请参阅 QIcon::State .