Problems declaring global QIcons

[SkripT]

Hi all, my application crashes when I make the following declarations of icons in the global space:

static const QIcon IconeInicialFotoPetita("../icone.bmp");
static const QIcon IconeLlibreObert("../llibreobert.png");
static const QIcon IconeLlibreTancat("../llibretancat.png");
static const QIcon IconeCarpetaOberta("../carpetaoberta.png");
static const QIcon IconeCarpetaTancada("../carpetatancada.png");

static const QIcon IconeInicialFotoPetita("../icone.bmp");
static const QIcon IconeLlibreObert("../llibreobert.png");
static const QIcon IconeLlibreTancat("../llibretancat.png");
static const QIcon IconeCarpetaOberta("../carpetaoberta.png");
static const QIcon IconeCarpetaTancada("../carpetatancada.png");

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But it doesn't crash if I just declare them as null icons:

static const QIcon IconeInicialFotoPetita;
static const QIcon IconeLlibreObert;
static const QIcon IconeLlibreTancat;
static const QIcon IconeCarpetaOberta;
static const QIcon IconeCarpetaTancada;

static const QIcon IconeInicialFotoPetita;
static const QIcon IconeLlibreObert;
static const QIcon IconeLlibreTancat;
static const QIcon IconeCarpetaOberta;
static const QIcon IconeCarpetaTancada;

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Anybody could explain me why?

Thanks.

[wysota]

Maybe they need a QApplication object? What does the backtrace tell you?

[SkripT]

What does the backtrace tell you?

The strange is that when the application crashes, it doesn't give any error message, simply it closes doing nothing. When I run it with gdb debugger it only says that the appplication have exited with value 1. Strange

[wysota]

So does it crash or exit?

[SkripT]

It exits but it's really a crash

[Chicken Blood Machine]

If QIcon is anything like QPixmap, it requires the use of resources from the window system. In Qt apps, you cannot use any window-system resources until you have created a Application object. Static objects are created initially at program startup before the main() funciton is even entered. That is why static Qt objects are (usually) a bad idea. Stick with your null QIcons and initialize them in an init() method that you call some time shortly after startup.