Use the image conversion function from qtmacfunctions.
Use the image conversion function from qtmacfunctions.

Change-Id: I2789832304e68c5ef2919874c0da019df6a1c605
Reviewed-by: Gabriel de Dietrich <57b5c683f0b6abfc17ef151d5b68c8944258b63a@digia.com>

kobolabs/qtmacextras,kobolabs/qtmacextras,awakecoding/qtmacextras