QTableWidget通过QSS美化

外观

#ifndef MAINWIDGET_H
#define MAINWIDGET_H

#include 

QT_BEGIN_NAMESPACE
namespace Ui { class MainWidget; }
QT_END_NAMESPACE

class MainWidget : public QWidget
{
    Q_OBJECT

public:
    MainWidget(QWidget *parent = nullptr);
    ~MainWidget();

private:
    Ui::MainWidget *ui;
};
#endif // MAINWIDGET_H

// mainwidget.cpp
#include "mainwidget.h"
#include "ui_mainwidget.h"
#include 
#include 
#include 

MainWidget::MainWidget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::MainWidget)
{
    ui->setupUi(this);
    ui->tableWidget->verticalHeader()->setVisible(true);

    QString qss;
    QFile file(":/style.css");
    if (file.open(QFile::ReadOnly)) {
        QStringList list;
        QTextStream in(&file);
        while (!in.atEnd()) {
            QString line;
            in >> line;
            list << line;
        }

        file.close();
        qss = list.join("\n");
        QString paletteColor = qss.mid(20, 7);
        qApp->setPalette(QPalette(paletteColor));
        qApp->setStyleSheet(qss);
    }
}

MainWidget::~MainWidget()
{
    delete ui;
}

// main.cpp
#include "mainwidget.h"

#include 

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWidget w;
    w.show();
    return a.exec();
}

// style.css
* {
    outline: 0px;
    color: #DCDCDC;
    background: #444444;
}

QTableView {
    border: 1px solid #242424;
    selection-background-color: #646464;
    selection-color: #DCDCDC;
    alternate-background-color: #525252;
    gridline-color: #242424;
}

QTableView::indicator {
    padding: 0px 0px 0px 0px;
    width: 15px;
    height: 15px;
}

QTableView::indicator:unchecked {
    image:url(:/image/checkbox_unchecked.png);
}

QTableView::indicator:unchecked:disabled {
    image:url(:/image/checkbox_unchecked_disable.png);
}

QTableView::indicator:checked {
    image:url(:/image/checkbox_checked.png);
}

QTableView::indicator:checked:disabled {
    image:url(:/image/checkbox_checked_disable.png);
}

QTableView::indicator:indeterminate {
    image:url(:/image/checkbox_parcial.png);
}

QTableView::indicator:indeterminate:disabled {
    image:url(:/image/checkbox_parcial_disable.png);
}

QTableView::item:selected {
    color: #DCDCDC;
    background: #383838;
}

QTableView::item:hover {
    color: #DCDCDC;
    background: #525252;
}

QTableView::item {
    padding: 1px;
    margin: 0px;
    border: 0px;
}

/* 表格样式 */
QTableView QLineEdit,
QTableView QComboBox,
QTableView QSpinBox,
QTableView QDoubleSpinBox,
QTableView QDateEdit,
QTableView QTimeEdit,
QTableView QDateTimeEdit {
    border-width: 1px;
    border-radius: 0px;
}

/* 选中表格后样式 (此处QLineEdit:focus生效) */
QTableView QLineEdit:focus,
QTableView QComboBox:focus,
QTableView QSpinBox:focus,
QTableView QDoubleSpinBox:focus,
QTableView QDateEdit:focus,
QTableView QTimeEdit:focus,
QTableView QDateTimeEdit:focus {
    background-color: #3fd4f2;
    border-width: 3px;
    border-radius: 5px;
}

/* 滚动条样式 */
QScrollBar:horizontal {
    background:#484848;
    padding:0px;
    border-radius:6px;
    max-height:12px;
}

QScrollBar::handle:horizontal {
    background:#242424;
    min-width:50px;
    border-radius:6px;
}

QScrollBar::handle:horizontal:hover {
    background:#AAAAAA;
}

QScrollBar::handle:horizontal:pressed {
    background:#AAAAAA;
}

QScrollBar::add-page:horizontal {
    background:none;
}

QScrollBar::sub-page:horizontal {
    background:none;
}

QScrollBar::add-line:horizontal {
    background:none;
}

QScrollBar::sub-line:horizontal {
    background:none;
}

QScrollBar:vertical{
    background:#484848;
    padding:0px;
    border-radius:6px;
    max-width:12px;
}

QScrollBar::handle:vertical{
    background:#242424;
    min-height:50px;
    border-radius:6px;
}

QScrollBar::handle:vertical:hover {
    background:#AAAAAA;
}

QScrollBar::handle:vertical:pressed {
    background:#AAAAAA;
}

QScrollBar::add-page:vertical {
    background:none;
}

QScrollBar::sub-page:vertical {
    background:none;
}

QScrollBar::add-line:vertical {
    background:none;
}

QScrollBar::sub-line:vertical {
    background:none;
}

/* 表头样式 QTableCornerButton::section是tablewidget左上角那一小块 详见https://blog.csdn.net/qq_43627907/article/details/125677496 */
QHeaderView, QHeaderView::section, QTableView QTableCornerButton::section {
    color: #DCDCDC;
    background: #525252;
}

QHeaderView::section, QTableCornerButton:section {
    padding: 3px;
    margin: 0px;
    border: 1px solid #242424;
    border-left-width: 0px;
    border-right-width: 1px;
    border-top-width: 0px;
    border-bottom-width: 1px;
}

QHeaderView::section:disabled {
    background: #444444;
    border-color: #484848;
    color: #242424;
}

详见Github