[Qt-interest] how can I get a svg file mask.

[Edward]

Hi guys,
 
I am wandering how to get the mask of a svg format file. I try to use QSvgRender to create a pixmap using a svg format, I found it can be displayed by QPainter drawPixmap but when I get its mask by function mask(), I get a wrong region. Why? Does anyone do the same thing before?How can I do that in right way?
 
BR,
 
Edward

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