On 05/18/12 23:21, david_aiken-/E1597aS9LQAvxtiuMwx3w@public.gmane.org wrote:
> 1. the OpenGL window overlaps all of the wizard pages. It should only appear on the first page.

	Oh, and besides moving the creation of the window,
	I think your Fl_Group's are oddly positioned.

	Can you say why you're using:

            Fl_Group *g = new Fl_Group(0, H-60, W, 60);
	    :
            Fl_Group *g = new Fl_Group(0, H-60, W, 60);
	    :
            Fl_Group *g = new Fl_Group(0, H-60, W, 60);

	..instead of:

            Fl_Group *g = new Fl_Group(0, 0, W, H);
	    :
            Fl_Group *g = new Fl_Group(0, 0, W, H);
	    :
            Fl_Group *g = new Fl_Group(0, 0, W, H);

	I think if you use the latter, and the mod in my last post,
	things will work.

	I think if you were to change the box() type for your
	groups to FL_FLAT_BOX and set the color() to FL_RED,
	you'd see where the groups were being positioned, and
	why you were getting strange drawing artifacts.
	(children should be positioned within Fl_Group,
	and if they are positioned outside of it, they draw oddly)

	FWIW, the following works for me, and can be compiled
	with 'fltk-config --compile -use-gl foo.cxx'.
	Changed the casing on some of the include files
	to get it to build on linux (which cares about case).

	I'm only resolving question #1 and #3, #2 is a separate
	issue that is pretty well covered elsewhere on resizable()
	behavior, eg: http://fltk.org/articles.php?L415

---------------------------------------------------------------------

#include <stdlib.h>
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Gl_Window.H>
#include <FL/Fl_Group.H>
#include <FL/Fl_Wizard.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Multiline_Output.H>
#include <FL/gl.h>

class MyGlWindow : public Fl_Gl_Window {
    // FIX OPENGL VIEWPORT
    //     Do this on init or when window's size is changed
    void FixViewport(int W,int H) {
        glLoadIdentity();
        glViewport(0,0,W,H);
        glOrtho(-W,W,-H,H,-1,1);
    }
    // DRAW METHOD
    void draw() {
        if (!valid()) { valid(1); FixViewport(w(), h()); }      // first time? init
        // Clear screen to bg color
        glClearColor(0, 0, 0, 0);
        glClear(GL_COLOR_BUFFER_BIT);
        // Draw 'X' in fg color
        glColor3f(1, 1, 1);
        glBegin(GL_LINE_STRIP); glVertex2f(w(), h()); glVertex2f(-w(),-h()); glEnd();
        glBegin(GL_LINE_STRIP); glVertex2f(w(),-h()); glVertex2f(-w(), h()); glEnd();
    }
    // HANDLE WINDOW RESIZING
    void resize(int X,int Y,int W,int H) {
        Fl_Gl_Window::resize(X,Y,W,H);
        FixViewport(W,H);
        redraw();
    }

public:
    // OPENGL WINDOW CONSTRUCTOR
    MyGlWindow(int X,int Y,int W,int H,const char*L=0) : Fl_Gl_Window(X,Y,W,H,L) {
        end();
    }
};

Fl_Wizard *G_wiz = 0;

void back_cb(Fl_Widget*,void*) {
    G_wiz->prev();
}

void next_cb(Fl_Widget*,void*) {
    G_wiz->next();
}

void done_cb(Fl_Widget*,void*) {
    exit(0);
}


class MyAppWindow : public Fl_Window {
    MyGlWindow *mygl;                    // opengl window
public:
    // APP WINDOW CONSTRUCTOR
    MyAppWindow(int W,int H,const char*L=0) : Fl_Window(W,H,L) {
        G_wiz = new Fl_Wizard(0,0,W,H);

        // Wizard: page 1
        {
            Fl_Group *g = new Fl_Group(0, 0, W, H);
            Fl_Button *next = new Fl_Button(290,H-30,100,25,"Next"); next->callback(next_cb);
            mygl = new MyGlWindow(10, 10, W-20, H-80);
            g->end();
        }
        // Wizard: page 2
        G_wiz->begin();
        {
            Fl_Group *g = new Fl_Group(0,0,W,H);
            Fl_Button *next = new Fl_Button(290,H-30,100,25,"Next"); next->callback(next_cb);
            Fl_Button *back = new Fl_Button(120,H-30,100,25,"Back"); back->callback(back_cb);
            Fl_Multiline_Output *out = new Fl_Multiline_Output(10,30,W-20,H-80,"Terms And Conditions");
            out->labelsize(20);
            out->align(FL_ALIGN_TOP|FL_ALIGN_LEFT);
            out->value("This is the Second page");
            g->end();
        }
        G_wiz->end();
        // Wizard: page 3
        G_wiz->begin();
        {
            Fl_Group *g = new Fl_Group(0,0,W,H);
            Fl_Button *done = new Fl_Button(290,H-30,100,25,"Finish"); done->callback(done_cb);
            Fl_Button *back = new Fl_Button(120,H-30,100,25,"Back"); back->callback(back_cb);
            Fl_Multiline_Output *out = new Fl_Multiline_Output(10,30,W-20,H-80,"Finish");
            out->labelsize(20);
            out->align(FL_ALIGN_TOP|FL_ALIGN_LEFT);
            out->value("This is the Last page");
            g->end();
        }
        G_wiz->end();
        end();
    }
};
// Simple 'wizard' using fltk's new Fl_Wizard widget
Fl_Window *G_win = 0;
int main(int argc, char **argv) {
    int w = 500, h=300;
    G_win = new MyAppWindow(w,h,"Example Wizard");
    G_win->resizable(G_win);
    G_win->end();
    G_win->show(argc, argv);
    return Fl::run();
}