[Qt-interest] model dialog background error?

[tang ke]

hi,all guys.
when I use a png picture with background image, if I add the Qt::Dialog,
it will show the black rect, if I delete the Qt::Dialog, it will works
right.

the widget construct function:
WidgetA::WidgetA(QWidget *parent)
:QWidget(parent)
{
QPixmap m_background("c:/1.png");
QPalette palette;
palette.setBrush(QPalette::Background, QBrush(m_background));
setPalette(palette);
setAutoFillBackground(true);
setFixedSize(m_background.size());
setWindowFlags(Qt::Dialog | Qt::FramelessWindowHint);
setWindowModality(Qt::ApplicationModal);
}

the main.cpp:

QWidget aaaaa;
aaaa.setGeometry(100, 100, 1000, 600);
WidgetA a(&aaaaa);
a.show();
aaaaa.show();


qt version:4.7.2
OS:winXp

-- 
Best Regards


Tang Ke (Application develop of software department)
Tel：0086-512-52308628 Fax：0086-512-52308688
Phone:18962393077
E-mail:tangk at lemote.com  MSN：tangk at lemote.com, mumutouv at gmail.com
Web: http://www.lemote.com <http://www.lemote.com/>
JiangSu ZhongKe Lemote Technology Co.,Ltd
MengLan Industry Park,YuShan,ChangShu City,JiangSu,China

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