stylesheet to QDialog Title Bar

Hi
How to apply stylesheet to QDialog Title Bar?

Quote:

---

Originally Posted by srinirc

Hi
How to apply stylesheet to QDialog Title Bar?

---

You cant do it, using style sheet. Use QStyle instead.

You must create a custom class which inherits by QDialog and then re-implement the "paintEvent" method with something similar to this:

Code:

---

MyDialog::MyDialog(QWidget* parent)  :   QDialog(parent, Qt::FramelessWindowHint) {}
 
// ...
 
void MyDialog::paintEvent(QPaintEvent* event)
{
    Q_UNUSED(event)
 
    QPainter p(this);
    QStyle* style = this->style();
    QRect active_area = this->rect();
    int titlebar_height = 0;
 
    // Titlebar.
    QStyleOptionTitleBar t_opt;
    t_opt.initFrom(this);
 
    titlebar_height = style->pixelMetric(QStyle::PM_TitleBarHeight, &t_opt, this);
 
    t_opt.rect = QRect(0, 0, this->width(), titlebar_height);
    t_opt.titleBarState = this->windowState();
    t_opt.text = t_opt.fontMetrics.elidedText(this->windowTitle(), Qt::ElideRight, t_opt.rect.width());
    style->drawComplexControl(QStyle::CC_TitleBar, &t_opt, &p, this);
    style->drawItemText(&p, t_opt.rect, Qt::AlignCenter, t_opt.palette, true, t_opt.text, QPalette::ToolTipText);
 
    // Background widget.
    active_area.setTopLeft(QPoint(0, titlebar_height));
    this->setContentsMargins(0, titlebar_height, 0, 0);
 
    QStyleOption w_opt;
    w_opt.initFrom(this);
    w_opt.rect = active_area;
    style->drawPrimitive(QStyle::PE_Widget, &w_opt, &p, this);
}

---

Now you can style it with a stylesheet:

Code:

---

MyDialog::title {
    height: 24px;
    font-weight: bold;
    color: #000000;
    background: #ffffff;
}

---