(C++) QColor

 

QColor is a Qt class for a color.

 

The code below, adapted from Qt example 1: moving a sprite over a background in 2D, shows how to set the color lime to the color made transparent.

 

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#include <QGraphicsPixmapItem> struct Sprite : public QGraphicsPixmapItem {   Sprite(     const std::string& filename,     const QColor& transparency_color = QColor(0,255,0)) //Lime green   {     QPixmap pixmap(filename.c_str());     const QBitmap mask = pixmap.createMaskFromColor(transparency_color);     pixmap.setMask(mask);     this->setPixmap(pixmap);   } };