B_BITMAP_RESERVE_OVERLAY_CHANNEL
flags = B_BITMAP_WILL_OVERLAY | B_BITMAP_RESERVE_OVERLAY_CHANNEL;
BBitmap *test = new BBitmap(BRect(0,0,320,240), B_BITMAP_WILL_OVERLAY | B_BITMAP_RESERVE_OVERLAY_CHANNEL, colspace[i].colspace);
bitmapFlags |= B_BITMAP_RESERVE_OVERLAY_CHANNEL;
| B_BITMAP_RESERVE_OVERLAY_CHANNEL) : 0;
| B_BITMAP_RESERVE_OVERLAY_CHANNEL, colspace[i].colspace);
if (flags & B_BITMAP_RESERVE_OVERLAY_CHANNEL) {