Drawing speed: QPixmap vs QPicture

[jacek]

Is drawing a QPicture faster than QPixmap?

QPicture is just a set of commands. If you want to draw it somewhere, Qt will have to execute all of those commands. While QPixmap is a bitmap stored in memory, so drawing it is just a matter of copying a memory region (provided that there are no transformations).

QPicture is good way for preparing vector graphics. Epecially if you want to save it later as SVG or PostScript.