On Tue, Mar 29, 2005 at 04:32:52PM -0800, pan yawen wrote: > Hi, > I have to copy large files from a CD to the hard disk. > > I want to use a progress bar to display the status of > copying the files. > > Any one has ideas about implementing this in gtk. I've never done this before, but here's an idea: use the GIOChannel stuff to copy the files. That means, create a GIOChannel for each new file on the CD for reading and a new one for each target file... add them both to the main loop so they get added to the select() bitmasks. Make your callbacks read and write a certain amount then update the progress bar appropriately after each complete write. By "appropriately" I mean... figure out in advance how much data there is to move from one place to another and keep track of how much data you've already moved and update the status bar according to that. I've never used a status bar, so I can't give you details... but that's what the documentation is for. another strategy for copying the files is using a standard command (like 'cp') to do that moving. this would be less error prone. still update the status bar using the same logic, but you'll only update it after every file. figuring out data size can be done with the stat() system call on *nix. I don't know how to size file data on Windows. attach the status bar to a modal dialog with a cancel button. associate static read/write buffers and a "keep_on_copying" flag with the io callbacks... set the keep_on_copying to false when the Cancel button is pressed. - Ben _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
