setPixmap and Paint Event

[Magu]

Its a simple (i thing) connect:

connect (ui.paintButton, SIGNAL (clicked()), this, SLOT (initPixmap()));

connect (ui.paintButton, SIGNAL (clicked()), this, SLOT (initPixmap()));

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.

Interface has been created with Qt Designer, so "ui" represents that object.
initPixmap() function contains the code I posted before.

Same line works if i load a bmp file:

pixmap.load("xxxx.bmp",const char *,Qt::Flags);
ui.label->setPixmap (pixmap);

pixmap.load("xxxx.bmp",const char *,Qt::Flags);
ui.label->setPixmap (pixmap);

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, and there aren´t console message indicating some like "No such slot/signal...."

I think i´m missing some important concept about Qt graphics framework.

thanks again