QListWidget

1.失去焦点背景颜色，代码设置全选的时候，背景会是白色，需要设置失去焦点背景颜色。（设置焦点，会出现白转化成设置背景色，效果不好）

QPalette p;

    p.setColor(QPalette::Inactive,QPalette::Highlight,QColor(51,153,255));

    p.setColor(QPalette::Inactive,QPalette::HighlightedText,QColor(Qt::white));

    p.setColor(QPalette::Inactive,QPalette::Text,QColor(Qt::white));

    lwItems->setPalette(p);

去掉选择虚线框
 MyListWidgetDelegate *listWidgetDelegate=new MyListWidgetDelegate(lwItems);

 lwItems->setItemDelegate(listWidgetDelegate);

void DataDlg::createMiddleListView()

{

    lwItems=new QListWidget();

    lwItems->setSelectionMode(QAbstractItemView::MultiSelection);

    lwItems->setEditTriggers(QAbstractItemView::SelectedClicked);

    QPalette p;

    p.setColor(QPalette::Inactive,QPalette::Highlight,QColor(,,));

    p.setColor(QPalette::Inactive,QPalette::HighlightedText,QColor(Qt::white));

    p.setColor(QPalette::Inactive,QPalette::Text,QColor(Qt::white));

    lwItems->setPalette(p);

    lwItems->setIconSize(QSize(,));

    lwItems->setObjectName("lwItems");

    MyListWidgetDelegate *listWidgetDelegate=new MyListWidgetDelegate(lwItems);

    lwItems->setItemDelegate(listWidgetDelegate);

    addExportItems();

    contentLayout->addWidget(lwItems);

}

添加数据

void DataDlg::addExportItems()

{

    isExportData=true;

    lwItems->clear();

    btnImportExport->setText(exportText);

    for(int i=;i<ExportFieldsCount;i++)

    {

       lwItems->addItem(ExportFields[i].fields);

       setListWidgetIcon(i,false);

    }

}

选择触发事件

void DataDlg::listWidgetEvent(QListWidgetItem *clickedItem)

{

    bool isSeleced=clickedItem->isSelected();

    if(isSeleced==true)

    {

        clickedItem->setIcon(QIcon(":/res/icons/images/checkbox_checked.png"));

    }

    else

    {

        clickedItem->setIcon(QIcon(":/res/icons/images/checkbox_unchecked.png"));

    }

}

设置全选或者取消全选

void DataDlg::onSelectAll()

{

    isSelectAll=!isSelectAll;

    int itemCount=lwItems->count();

    for(int i=;i<itemCount;i++)

    {

      lwItems->item(i)->setSelected(isSelectAll);

      setListWidgetIcon(i,isSelectAll);

    }

}

添加图标

void DataDlg::setListWidgetIcon(int row,bool isChecked)

{

    if(isChecked)

    {

       lwItems->item(row)->setIcon(QIcon(":/res/icons/images/checkbox_checked.png"));

    }

    else

    {

        lwItems->item(row)->setIcon(QIcon(":/res/icons/images/checkbox_unchecked.png"));

    }

}

取出选中的值

int selectedCount=lwItems->selectedItems().count();

    if(selectedCount==)

    {

        return;

    }

    QString selectedText="";

    for(int i=;i<selectedCount;i++)

    {

        selectedText=lwItems->selectedItems().at(i)->text();

    }

2. 去掉选择虚线框

#ifndef MYLISTWIDGETDELEGATE_H

#define MYLISTWIDGETDELEGATE_H

#include <QObject>

#include<QItemDelegate>

#include<QPen>

#include<QPainter>

#include<QBrush>

#include<QStyledItemDelegate>

#include<QDebug>

class MyListWidgetDelegate : public QStyledItemDelegate

{

    Q_OBJECT

public:

    explicit MyListWidgetDelegate(QObject *parent = );

protected:

     void paint(QPainter *painter,const QStyleOptionViewItem &option, const QModelIndex &index) const;

private:

signals:

public slots:

};

#endif // MYLISTWIDGETDELEGATE_H

#include "mylistwidgetdelegate.h"

MyListWidgetDelegate::MyListWidgetDelegate(QObject *parent) : QStyledItemDelegate(parent)

{

}

void MyListWidgetDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const

{

      QStyleOptionViewItem itemOption(option);

      if(itemOption.state & QStyle::State_HasFocus)

      {

          itemOption.state = itemOption.state ^ QStyle::State_HasFocus;

      }

     //调用默认委托

      QStyledItemDelegate::paint(painter,itemOption,index);

      QPen pen;

      pen.setColor(QColor(,,));

      pen.setStyle(Qt::DotLine);

      painter->setPen(pen);

      painter->drawLine(itemOption.rect.bottomLeft(),itemOption.rect.bottomRight());

}

qss

QListWidget#lwItems{

    color:#FFFFFF;

    font:16pt "DejaVu Sans";

    background-color:#;

    margin:2px;

    padding-left:10px;

    padding-right:10px;

    border: 1px solid #32435E;

}

QListWidget#scaleItemsList,QListWidget#connectedIPList{

    color:#FFFFFF;

    font:16pt "DejaVu Sans";

    background-color:#;

    margin:20px;

    border: 1px solid #32435E;

}

QListWidget::item{

     border:solid #;

     border-width:0px 0px 1px 0px;

     padding:10px 0px 10px 15px;

     margin:0px 5px 0px 5px;

}

QListWidget::item:selected {

     background: qlineargradient(x1: , y1: , x2: , y2: ,

                                 stop:  #6A848C,  stop: 1.0 #0F9EAF);

}

QListWidget::item:selected:!active {

     border-width: 0px ;

}

QListWidget::item:selected:active {

     border-width: 0px;

}