Fl::h() excludes the height of the task bar at the bottom.
I have an Fl_Double_Window inside an FL_Window. After I make the outer window (Fl_Window) full screen using fullscreen() method, I want to make the height of the Fl_Double_Window equal to the height of the screen. If I use innerWindow->size(Fl::w(), Fl::h()); it does not extend its height all the way to the bottom of the screen.
I believe Fl::w() and Fl::h() will give you width and height of the working area. After examining the list of screen functions I believe your best option is to get the number of screens using the static int Fl::screen_count () and then use the static void Fl::screen_xywh (int &X, int &Y, int &W, int &H, int n) where n is the index of the screen you want to analyze, typically 0.
If all you care about is the screen below the mouse pointer, use the static void Fl::screen_xywh (int &X, int &Y, int &W, int &H) function.
