Ok, here´s some example code showing the situation. The problem is that you 
probably won´t be ableto use it because there´s an specific class that seems to 
be related to the problem that isn´t part of fltk,but it´s a class I made based 
on Greg Ercolano´s Fl_OpDesk. Nevertheless, please check the code,because I´m 
very confident that the problem is not in my class, based on the behaviour of 
the problem.

#include <stdio.h>#include <string.h>#include <FL/Fl.H>#include 
<FL/Fl_Double_Window.H>//#include <FL/Fl_Scroll.H>#include <FL/Fl_PNG_Image.H>
// Test the Fl_OpDesk widget
#include "Fl_OpDesk.H"#include "Fl_OpBox.H"#include "Fl_OpButton.H"
int main() {
        // If I specify the whole path for each image, everything works ok      
Fl_PNG_Image imagen("D:\\Tzarls\\Cpp\\Fl_OpDesk\\Fl_OpDesk\\Release\\mas.png"); 
Fl_PNG_Image 
imagen2("D:\\Tzarls\\Cpp\\Fl_OpDesk\\Fl_OpDesk\\Release\\Gentoo-small.png");
        // Comment out previous lines and uncomment these two lines; app won´t 
work anymore,    // (unless you change the .exe file and the images to a folder 
with a shorter path name)        //Fl_PNG_Image imagen("mas.png");       
//Fl_PNG_Image imagen2("Gentoo-small.png");         Fl_Double_Window *win = new 
Fl_Double_Window(720,486);
        // ... but if you comment all previous 4 Fl_PNG_Image lines and 
uncomment these two,    // effectively placing them after the double window, it 
works again.    //Fl_PNG_Image imagen("mas.png");       //Fl_PNG_Image 
imagen2("Gentoo-small.png");
        Fl_Group *g = new Fl_Group(10,10,win->w()-20,win->h()-20);      
g->box(FL_DOWN_BOX);
        const int deskw = 1500; const int deskh = 1500;
        // This is a class of mine (actually, a class made by Greg Ercolano). 
Weird thing is that, if I remove  //the following line, then the app will work 
ok no matter which one of the previous options you choose...       Fl_OpDesk 
*opdesk = new Fl_OpDesk(g->x() + 2,g->y() + 2,g->w()-4,g->h()-4);
        // Yes, you could say that the problem is inside the Fl_OpDesk class, 
but if that was the case, // then why by just changing the folder of a 
non-working version of the app it would start working again?       // BTW, 
every option works perfectly when running the debug app. The problem appears 
only for releases.
g->end();    win->resizable(g);
        Fl::scheme("gtk+");
    win->show();                            return(Fl::run());}
If needed, I can provide the files for the OpDesk class, but again, I really 
think the problem isn´t there.
Thanks,
Carlos Luna                                       
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