The bitmap background image is not visible within TRAFVU. Is there any size limitation for the bitmap background file?
Yes. Bitmaps are stored on disk differently depending on the type of bitmap. 24-bit color bitmaps use 3 bytes per pixel, 256 color bitmaps use 1 byte per pixel, 16 color bitmaps use 2 pixels per byte, and black and white bitmaps use 8 pixels per byte. So the size of the file can change dramatically based on the type of bitmap. Depending on the image that is trying to be loaded and the purpose of the image, reducing a 24-bit color image to a 256 color image could buy a lot better resolution. Orienting the image so the longer direction is vertical could allow a bigger bitmap than orienting it horizontally.