<![CDATA[QStyleOptionButton cloud be set background color?]]>QStyleOptionButton cloud be set background color?

There's a table that's show some information of a group device, I use model+qtableview,one column of the table is show switch for user, and user need the power of control the switch.so i use QStyledItemDelegate to show a button in this column.For better user experience,i hope the switch(QStyleOptionButton)is yellow when the device is running and green when the deivce is stop.
alt text

void ChooseWatchObjectDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
    QStyleOptionButton btn;
    btn.rect = option.rect;
    bool fg = index.model()->data(index).toBool();
    if(fg == true)
    {
        btn.palette.setBrush(QPalette::Button,QBrush(QColor(Qt::green)));//it doesn't work.....
        btn.text = tr("启动");
    }
    else
    {
        btn.palette.setBrush(QPalette::Background,QBrush(QColor(Qt::red)));//it also doesn't work.....
        btn.text = tr("停止");
    }
    btn.state |= QStyle::State_Enabled;
    painter->setBrush(QColor(Qt::red));  //it's still unuseful...
    if(option.widget != NULL)
        QApplication::style()->drawControl(QStyle::CE_PushButton,&btn,painter);
    else
        option.widget->style();
}
]]>https://forum.qt.io/topic/92249/qstyleoptionbutton-cloud-be-set-background-colorRSS for NodeThu, 05 Nov 2026 07:52:03 GMTWed, 04 Jul 2018 01:44:03 GMT60<![CDATA[Reply to QStyleOptionButton cloud be set background color? on Mon, 16 Jul 2018 05:25:36 GMT]]>@JohnMPaine
tried....
And then ,the whole button has filled....the txt of button can't be seen.....

]]>https://forum.qt.io/post/469692https://forum.qt.io/post/469692Mon, 16 Jul 2018 05:25:36 GMT<![CDATA[Reply to QStyleOptionButton cloud be set background color? on Fri, 13 Jul 2018 07:29:13 GMT]]>@qazaq408 said in QStyleOptionButton cloud be set background color?:

btn.palette.setBrush(QPalette::Background,QBrush(QColor(Qt::red)));
painter->fillRect(btn.rect,btn.palette.brush(QPalette::Button)); //unused.......

Have you tried
painter->fillRect(btn.rect, btn.palette.brush(QPalette::Background));
instead of
painter->fillRect(btn.rect, btn.palette.brush(QPalette::Button));

]]>https://forum.qt.io/post/469274https://forum.qt.io/post/469274Fri, 13 Jul 2018 07:29:13 GMT<![CDATA[Reply to QStyleOptionButton cloud be set background color? on Wed, 11 Jul 2018 10:15:35 GMT]]>Hi
I think i used QStyle::CE_PushButtonLabel instead to get it to be transparent as
QStyle::CE_PushButton ignored all QBrush.
If that fails too, you could use icon on button to show state.

]]>https://forum.qt.io/post/468833https://forum.qt.io/post/468833Wed, 11 Jul 2018 10:15:35 GMT<![CDATA[Reply to QStyleOptionButton cloud be set background color? on Wed, 11 Jul 2018 09:11:23 GMT]]>Could someone give me help......
on those days,I trid to use a pix to replace the button,but when I clicked the button(It's is a pix in fact),it doesn't look like a button,because the button will changed when it clicked by mouse but pix not
More important,my boss denied my plan that's replace the button by a pix....
alt text

]]>https://forum.qt.io/post/468812https://forum.qt.io/post/468812Wed, 11 Jul 2018 09:11:23 GMT<![CDATA[Reply to QStyleOptionButton cloud be set background color? on Mon, 09 Jul 2018 01:31:22 GMT]]>@SGaist
win7 + Qt5.9 + mingw32

I had tried

    if(option.widget != NULL)
    {
        painter->fillRect(btn.rect,btn.palette.brush(QPalette::Button)); //It doesn't work
        QApplication::style()->drawControl(QStyle::CE_PushButton,&btn,painter);
    }
    else
        option.widget->style();

I also tried

    if(option.widget != NULL)
    {
        btn.palette.setBrush(QPalette::Background,QBrush(QColor(Qt::red)));
        painter->fillRect(btn.rect,btn.palette.brush(QPalette::Button));  //unused.......
        QApplication::style()->drawControl(QStyle::CE_PushButton,&btn,painter);
    }
    else
        option.widget->style();

0_1531099806126_23333.png
It's a question ~。~

]]>https://forum.qt.io/post/468226https://forum.qt.io/post/468226Mon, 09 Jul 2018 01:31:22 GMT<![CDATA[Reply to QStyleOptionButton cloud be set background color? on Fri, 06 Jul 2018 11:01:33 GMT]]>You might want to call

painter->fillRect(btn.rect, btn.palette.brush(QPalette::Button));

Before drawing the button on top of it.

]]>https://forum.qt.io/post/467823https://forum.qt.io/post/467823Fri, 06 Jul 2018 11:01:33 GMT<![CDATA[Reply to QStyleOptionButton cloud be set background color? on Fri, 06 Jul 2018 10:07:55 GMT]]>Sorry, my bad, I misread your code.

What platform are you on ?
With which version of Qt ?

Can you also show what you are currently getting ?

]]>https://forum.qt.io/post/467799https://forum.qt.io/post/467799Fri, 06 Jul 2018 10:07:55 GMT<![CDATA[Reply to QStyleOptionButton cloud be set background color? on Fri, 06 Jul 2018 10:03:25 GMT]]>@SGaist
Thank you..

you mean that's create a new painter?

 painter->setBrush(QColor(Qt::red));  //it's still unuseful...

It doesn't work...

]]>https://forum.qt.io/post/467797https://forum.qt.io/post/467797Fri, 06 Jul 2018 10:03:25 GMT<![CDATA[Reply to QStyleOptionButton cloud be set background color? on Fri, 06 Jul 2018 10:09:09 GMT]]>Hi,

You are modifying the painter object but you are then calling the style of QApplication to paint. Why don't use use painter ?

Misread the code.

[edit: SGaist]

]]>https://forum.qt.io/post/467445https://forum.qt.io/post/467445Fri, 06 Jul 2018 10:09:09 GMT<![CDATA[Reply to QStyleOptionButton cloud be set background color? on Wed, 04 Jul 2018 10:05:38 GMT]]>I try to use setStyleSheet in the delegate

setStyleSheet("QPushButton{background-color:red}");

it still doesn't work....

]]>https://forum.qt.io/post/467337https://forum.qt.io/post/467337Wed, 04 Jul 2018 10:05:38 GMT