DDS image file paint failed...use QPixmap open the image file, and then covert it to QIcon and paint.

[opengpu2]

DDS image file paint failed...use QPixmap open the image file, and then covert it to QIcon and paint.
the code is like this:
QPixmap pixmap("...imagePath...");
QIcon icon = QIcon(pixmap);
if ( !icon.isNull() )
{
icon.paint(......);
}

and the QPixmap is read success, because i got its resolution right.
and the icon is always not Null...it do paint...but for some DDS file, it just paint a white image, or nothing at all....

[opengpu2]

and for the DDS file which paint into nothing...the ImageMagic Display also display nothing...
but Photoshop Do Not show Nothing....

[opengpu2]

the files all have MipMap...but some are right, however some are wrong....