Jane wrote: > my app needs a logo but i dont want to distribute .png > files (app should stay a single executable). > > so i found this: > http://wiki.wxwidgets.org/Embedding_PNG_Images > and used bin2c.c to convert my .png to a C vector like: > > static unsigned char myimage_png[] = { > 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, > 0x00, 0x0d, // ... > };
Others have replied useful hints already, but to add my 2 ct: This would obviously create an array that consists of the png-encodede image data. You would have to load this with the png library to decode the image data for FLTK's use. Although this ought to be possible, I would only do this for much bigger images, where space saving would be valuable. > the image type is: > PNG image data, 128 x 128, 8-bit/color RGBA, non-interlaced How big is the resultant array? A simple check (sizeof) should show you that it is (or at least should be) as big as the original png file. > in my code i load the data like this: > > Fl_RGB_Image* logo; > logo = new Fl_RGB_Image(l128_png, 128, 128, 4); This would work, if you have the _decoded_ image, and its size should be 128x128x4 bytes. > and i have added a box with: > logobox->image(logo); > > i also call: > Fl::visual(FL_RGB); > fl_register_images(); > > before anything is being drawn. This looks okay (if you use the correct image data). > however, the image is totally distorted, nothing like my > logo looks like. > > i have also tried to load the vector with D=3. it looks > different but also totally wrong. > > any ideas? Yes, see the other posts, or learn how to load a png image from memory with libpng. Or, do it yourself like Ian wrote: Use a small program to load the image and write the resultant array out to a file yourself (you know how to do this. Hint: bin2c.c) Albrecht _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
