Display image on box or window

montagne · #1 27-Jul-2007, 01:22

hey all,

i begin with fltk. i would like to know how to display two frames(images) in on window or in two box.
i am using fltk 2.
my code is :

CPP / C++ / C Code:

          
  //******************************************
            //fltk
            Window *window = new Window(700, 280);
            window->begin();
            Widget *boxG = new Widget(20, 40, 320, 240);
            boxG->box(UP_BOX);
            Widget *boxD = new Widget(350, 40, 320, 240);
            boxD->box(UP_BOX);
            rgbImage rgb("images/image000G.pnm"); 
 boxD->image(rgb);			
            window->end();
            window->show();
            //******************************************

the result is :
on window with two boxes and a small gray zone on the right box.
i tried to change the link to my frame (i used the real link) i have the same result.
thanks to all

cable_guy_67 · #2 27-Jul-2007, 04:17

Quote:

Originally Posted by montagne

hey all,

i begin with fltk. i would like to know how to display two frames(images) in on window or in two box.
i am using fltk 2.

the result is :
on window with two boxes and a small gray zone on the right box.
i tried to change the link to my frame (i used the real link) i have the same result.
thanks to all

Hello and Welcome to GIDForums™ FLTK Forum montagne. Check out this thread and see if the information helps.

Mark

montagne · #3 27-Jul-2007, 16:07

Hi,
i saw the thread. i have done the same thing to resolve my problem with no succes.

so i explain the situation :
i have my code in FTLK directory

CPP / C++ / C Code:

//main.cpp

#include <fltk/Window.h>
#include <fltk/Widget.h>
#include <fltk/run.h>
#include <fltk/rgbImage.h>
using namespace fltk;

int main(int argc, char **argv) {
//fltk
            Window *window = new Window(850, 500);
            window->begin();
            Widget *boxG = new Widget(20, 40, 400, 400);
            boxG->box(UP_BOX);
            Widget *boxD = new Widget(450, 40, 400, 400);
            boxD->box(UP_BOX);
            rgbImage rgb("logoINSA.png"); // test 1	
            //rgbImage rgb("../logoINSA.png"); // test 2
            //rgbImage rgb("./logoINSA.png"); // test 3
           //rgbImage rgb("/home/montagne/testFLTK/FLTK/logoINSA.png"); // test 4
           // rgbImage rgb("home/montagne/testFLTK/FLTK/logoINSA.png"); // test 5

 	  boxD->image(rgb);                      
            window->end();
            window->show();
  return run();
}

logoINSA.png frame and main.cpp are in the same directory(FLTK)
(the frame used can be seen at

CPP / C++ / C Code:

http://www.insa-rouen.fr/actualites/supportsdedition/logos-insa-de-rouen/logo-de-l-insa-de-rouen/logoINSA.png

I tried with test1 test2 ...... with no succes.a black ared in the center of the right box.

i use fltk2 and kubuntu
thanks all.

cable_guy_67 · #4 28-Jul-2007, 07:19

I am a bit busy today so here it is without rhyme or reason.

Ask any questions or post comments and I'll get to them later.

CPP / C++ / C Code:

#include <fltk/Window.h>
#include <fltk/Widget.h>
#include <fltk/run.h>
#include <fltk/SharedImage.h>
#include <fltk/TiledImage.h>

using namespace fltk;

int main(int argc, char **argv)
{
  register_images();
  Window *window = new Window(850, 500);
  window->begin();
    Widget *boxG = new Widget(20, 40, 400, 400);
    boxG->box(UP_BOX);
    boxG->image(new TiledImage(SharedImage::get("logoINSA.png")));

    Widget *boxD = new Widget(450, 40, 400, 400);
    boxD->box(UP_BOX);
    boxD->image(SharedImage::get("logoINSA.png"));
  window->end();
  
  window->show();

  return run();
}

Mark

BTW, I usually use 1.1.x from subversion. 2.0 was a pain to compile with CygWin...

cable_guy_67 · #5 28-Jul-2007, 12:13

Thats what happens when I try and rush something out. Here's a better attempt.

CPP / C++ / C Code:

#include <fltk/Window.h>
#include <fltk/Widget.h>
#include <fltk/run.h>
#include <fltk/SharedImage.h>
// #include <fltk/TiledImage.h>

using namespace fltk;

int main(int argc, char **argv)
{
  register_images();
  Window *window = new Window(850, 500);
  window->begin();
    Widget *boxG = new Widget(20, 40, 400, 400);
    boxG->box(UP_BOX);
//     boxG->image(new TiledImage(SharedImage::get("logoINSA.png")));
    boxG->image(SharedImage::get("logoINSA.png"));
    boxG->align(fltk::ALIGN_INSIDE);

    Widget *boxD = new Widget(450, 40, 400, 400);
    boxD->box(UP_BOX);
    boxD->image(SharedImage::get("logoINSA.png"));
    boxD->align(fltk::ALIGN_CLIP);

    window->resizable(boxG);
  window->end();
  
  window->show();

  return run();
}

Mark

awger · #6 16-Dec-2008, 10:05

Sorry for the necro, but I was having similar problems and couldn't locate a definitive answer... this was the thread that kept coming up in my searches.

I'm new to FLTK, and I'm starting with 2.0. I like the high-speed, low-drag implementation so far, but it is quite different to what I'm accustomed to (VCL/CLX, Juce).

WRT displaying images in FLTK 2.0, I ran into two major issues:

#1 -- linker error (undefined reference to xpmImage::fetch), resolved by putting fltk2_images before fltk2 in library link order, and

#2 -- empty boxes when trying to display PNG images, resolved by adding libpng to the link (duh) and a call to fltk::register_images() at program start.

I resolved #1 through trial and error, and I'm not familiar enough with fltk to explain why rearranging link order fixed it (maybe an initialization dependency in fltk2? less likely, a problem with gcc 4.2.1?).

#2 was more frustrating, and it wasn't until I copied and pasted Mark's code and started dissecting that I stumbled across the call to register_images(), which was missing in my code (and in the OP's as well).

I have not been able to find this function documented anywhere (the official doxygen links to a missing page at the moment), and the only reference to it that I could find was in SharedImage::add_handler, which made it appear to be some internal thing. I did not bother to look in any of the v1 docs.

Payin' it forward...

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