changing qimage->fill() because fill(QColor) is not available in qt4.7
changing qimage->fill() because fill(QColor) is not available in qt4.7

rdebroiz/medInria-public,aabadie/medInria-public,rdebroiz/medInria-public,NicolasSchnitzler/medInria-public,aabadie/medInria-public,NicolasSchnitzler/medInria-public,rdebroiz/medInria-public,NicolasSchnitzler/medInria-public,aabadie/medInria-public