Qt Stylesheet mystery -


my desktop qt app has large stylesheet applied. it's applied qapplication derived class using:

this->applystylesheet(":/qss/default.qss");

it works qwidget objects define , use. (using *.ui files).

my problem begins when promote 1 of qwidgets in *.ui file i'm using 1 of own qwidget derived classes.

when widget qwidget, the following worked , changed background image:

qwidget#mywidget {     background: transparent;     background-image: url(:/images/bg_img.png);     background-repeat: repeat-x; }

when promoted element custom qwidget derived class , changed to:

qmyderivedclass#mywidget {     background: transparent;     background-image: url(:/images/bg_img.png);     background-repeat: repeat-x; }

i no longer see background image. missing something. it... hope 1 of knows.

my bad. posting people similar problem can find solution:

i did not add "paintevent" custom class. (which in case draws nothing enables stylesheet adherence).

void customwidget::paintevent (qpaintevent *) {     qstyleoption opt;     opt.init (this);     qpainter p (this);     style ()->drawprimitive (qstyle::pe_widget, &opt, &p, this); }

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