Impossible to get correct widget background color

[croscato]

Hi all.

Here is what I want to do:
1) In paintEvent a make some draws and text in the widget using a QPainter object

2) Then a want to give it a perfurated effect. I'm thinking in this solution

QBrush brush(this->palette().background().color(),Qt::Dense4Pattern);
painter.fillRect(0, 0, this->width() - 1, this->height() - 1, brush);

QBrush brush(this->palette().background().color(),Qt::Dense4Pattern);
painter.fillRect(0, 0, this->width() - 1, this->height() - 1, brush);

To copy to clipboard, switch view to plain text mode 

The problem is the that palette().background().color() doesn't return the right widget backgroung color. It returns an aproximate light color.

Am I missing something?

[wysota]

What is the widget? Maybe you should use base() instead of background()?

[croscato]

I tryed base() too with no success.

My widget is a sub-class of QPushButton, like this:

class QIscButton: public QPushButton

class QIscButton: public QPushButton

To copy to clipboard, switch view to plain text mode 

I don't know if it's relevante but I'm using Slackware 12.2, with KDE 4.2.3 and the Qt version is 4.5.1.

Thanks.

[croscato]

I think I know what the problem is. Looking more carefully at the widgets background in my system I could see that In KDE using the Oxygen theme the widgets background aren't a solid color but a gradient. With colors that are close to each other, what makes the gradient almost imperceptible.

Now my question is. How can a manage to get a QGradient that matches the KDE theme (Oxygen) without hard-code with?

Thanks.

[wysota]

How can a manage to get a QGradient that matches the KDE theme (Oxygen) without hard-code with?

You can try the button() role of the palette. But I can't guarantee this will work. Otherwise you have to use QStyle API.