[Qt-interest] Is Qt smart anough not to load the same icon resource multiple times?

[Sean Harmer]

On Thursday 17 February 2011 10:06:20 Daniel Price wrote:
> If I create multiple instances of a custom widget that loads an icon from a
> resource like this:
> 
> m_icon(QPixmap(":/MyIcons/MyIcon.png"))
> 
> is Qt smart enough to load the icon only once and implicitly share the
> resource? Or it is loading the same icon multiple times and wasting memory?
> 
> I know that many Qt classes implicitly share their data when
> copy-constructed or assigned but how can members in separate instances
> 'know' about each other?

Take a look at QPixmapCache.

Sean