Jim George wrote: > My program has a GtkDrawingArea in a resizable window. The drawing > area needs a 2D array of integers, sized so that there is 1 integer > per pixel. When the user moves his mouse over the DrawingArea, I want > the program status bar to show the value from the array corresponding > to the pixel under the mouse. > > I have two questions: > 1) I am currently trapping the "configure-event" signal and resizing > the array there. Is this the best approach? In my past life, I used to > program for the Windows API, I'm basically looking for a replacement > for WM_SIZE. > 2) I had a bug in my program in which I would occasionally get a mouse > cursor position outside the drawing area (for eg: the last time > configure-event was called, I got a 400x400 window, but I'd get pixel > values of, say, x = 403). I handle these by bounds-checking before I > access the array, but why would I get such values in the first place? > This is why I wonder if trapping "configure-event" was the right thing > to do. > > Thanks, all. > > -Jim
Jim, I implemented something similar for picking purpose. For your questions, I'll let you know what I did : 1) used the "expose" event, don't know if this is better than your "configure-event" but it works 2) I got the same problem and cropped the values This is perfect for what I had to do. Best regards, Yann _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
