BM is 2D in 3D, it does not have normal 2D.
For that reason it is just hard to use for pure 2D and not that recommended as the most "usefull" way to do so is pixmaps, which are several times slower than images.
For doing something like a drawing app, there are ways to do as well. (as mentioned, using 1 pixmap of the desired size is one possibility and then simply copy the image to the backbuffer)
For that reason it is just hard to use for pure 2D and not that recommended as the most "usefull" way to do so is pixmaps, which are several times slower than images.
For doing something like a drawing app, there are ways to do as well. (as mentioned, using 1 pixmap of the desired size is one possibility and then simply copy the image to the backbuffer)