Unsolved Set Background color of body of tab of QTabWidget

[dan1973]

Hi,
I am unable to set the body background color of Main Tab and other tabs of QTab widget.
I am able to set the background color of each Tab header or tab bar.

here is my code

    // GROUP1
    tw1= new QTabWidget;
    tw1->setContentsMargins(0, 0, 0, 0);
    tw1->setMinimumWidth(1000);
    tw1->setMinimumHeight(780);
    tw1->setStyleSheet(
            "QTabBar {background-color: #0B6C87; color:#ffffff;}"
            "QTabBar::tab:!selected {height: 60px; width: 125px;background-color: #0B6C87; color:#ffffff;font-size:11pt;}"
            "QTabBar::tab:selected {height: 60px; width: 125px;background-color: #0BAFF2; color:#ffffff;font-size:12pt; font-weight: bold;}"
    );
    tw1->addTab(new MainTab(), tr("MAIN"));
    tw1->addTab(new UtilitiesTab(), tr("UTILITIES"));
    tw1->addTab(new HCTab(), tr("HEALTH \nCHECK"));
    tw1->addTab(new LVTab(), tr("LOG \nVIEW"));
    tw1->addTab(new GRTab(), tr("GENERATE \nREPORT"));
    tw1->addTab(new HelpTab(), tr("HELP"));
    tw1->addTab(new AboutTab(), tr("ABOUT"));
    tw1->addTab(new ExitTab(), tr("EXIT"));

    connect(tw1, SIGNAL(currentChanged(int)), this, SLOT(onTabChanged(int)));

I tried setting it in the constructor of the MainTab widget. its not working. but it changes my MainTab header label.

MainTab::MainTab(QWidget *parent) : QWidget(parent) {
    QFont fntGgia12( "Georgia", 12, QFont::Bold);
    QFont fntGgia12N( "Georgia", 12, QFont::Normal);
    QFont fntGgia16( "Georgia", 16, QFont::Bold);

    // HEADING
    lblHdg = new QLabel("HFT MAIN PAGE");
    lblHdg->setFont(fntGgia16);
    lblHdg->setFixedSize(500, 50);
    lblHdg->setStyleSheet("QLabel {"
    "border-style: solid;"
    "border-width: 3px;"
    "border-color: black; "
    "}");
    lblHdg->setAlignment(Qt::AlignCenter);
    hbxHdg = new QHBoxLayout;
    hbxHdg->addWidget(lblHdg);

    // GROUP1
    bMM = new QPushButton("MANUAL MODE");
    bMM->setFont(fntGgia12);
    bMM->setFixedSize(160, 50);
    bMM->setStyleSheet("QPushButton {"
       "background-color: #FAD7A0;"
       "border-style: solid;"
       "border-color: black;"
       "border-width: 3px;"
       "border-radius: 15px;"
    "}"

    "QPushButton:hover {"
    "border-color: #DFFF00;"
    "}"

    "QPushButton:pressed {"
    "border-color: #1212F5;"
    "border-style: inset;"
    "background: qradialgradient("
    "cx: 0.4, cy: -0.1, fx: 0.4, fy: -0.1,"
    "radius: 1.35, stop: 0 #fff, stop: 1 #ddd"
    ");"
    "}"
    );

    connect(bMM, SIGNAL(clicked(bool)), SLOT(clkbMM()));

    bAM = new QPushButton("AUTOMATIC MODE");
    bAM->setFont(fntGgia12);
    bAM->setFixedSize(220, 50);
    bAM->setStyleSheet("QPushButton {"
       "background-color: #FAD7A0;"
       "border-style: solid;"
       "border-color: black;"
       "border-width: 3px;"
       "border-radius: 15px;"
    "}"

    "QPushButton:hover {"
    "border-color: #DFFF00;"
    "}"

    "QPushButton:pressed {"
    "border-color: #1212F5;"
    "border-style: inset;"
    "background: qradialgradient("
    "cx: 0.4, cy: -0.1, fx: 0.4, fy: -0.1,"
    "radius: 1.35, stop: 0 #fff, stop: 1 #ddd"
    ");"
    "}"
    );

    connect(bAM, SIGNAL(clicked(bool)), SLOT(clkbAM()));

    hbxBtns = new QHBoxLayout;
    hbxBtns->addWidget(bMM);
    hbxBtns->addWidget(bAM);
    hbxBtns->setContentsMargins(260, 0, 0, 0);
    hbxBtns->setSpacing(40);
    hbxBtns->addStretch(1);

    vbxMain = new QVBoxLayout;
    vbxMain->addLayout(hbxHdg);
    vbxMain->addSpacerItem(new QSpacerItem(0, 80, QSizePolicy::Expanding, QSizePolicy::Expanding));
    vbxMain->addLayout(hbxBtns);
    vbxMain->addStretch(1);

    setLayout(vbxMain);
    setStyleSheet("QWidget {background-color: #BBE3DF;}");
}

Please help....Thank you.

[dan1973]

Hi all,

I think i got it after searching for solution in net from StackOverflow:

What's the point of this paintEvent override:
...
void QWidgetDerivedWhatchamit::paintEvent(QPaintEvent *)
{
QStyleOption opt;
opt.init(this);
QPainter p(this);
style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
}
...
Surely that's what QWidget already does?

from @edward strange

I am overriding the paint event above. Thank you all.

[Bonnie]

@dan1973
That's necessary for a custom QWidget-derived class to support background stylesheet.
Another option is to set the attribulte

setAttibute(Qt::WA_StyledBackground)