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我有一个QAbstractItemModel和一个QItemDelegate，这是我的问题。代表什么都不做。它的子程序被调用，但没有任何反应。与QAbstractTableModel使用QItemDelegate
这是我想在我的桌子上看到的。
文本：QComboBox：文本：文本：QProgressBar
其中：是一个列分隔符。
代表。 的#ifndef DELEGATEACTION_H 的#define DELEGATEACTION_H
#include <QVariant>
#include <QItemDelegate>
#include <QWidget>
#include <QLabel>
#include <QComboBox>
#include <QProgressBar>
class DelegateAction : public QItemDelegate
{
Q_OBJECT
public:
explicit DelegateAction(QObject *parent = 0);
QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const;
void setEditorData(QWidget *editor, const QModelIndex &index) const;
void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const;
};
#endif // DELEGATEACTION_H
#include "DelegateAction.h"
DelegateAction::DelegateAction(QObject *parent) :
QItemDelegate(parent)
{
}
QWidget * DelegateAction::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QWidget* editor = 0;
switch (index.column())
{
case 0:
default:
{
editor = new QLabel();
break;
}
case 1:
{
QComboBox* combo = new QComboBox(parent);
combo->addItem("Test");
combo->addItem("Test 2");
editor = combo;
break;
}
case 4:
{
editor = new QProgressBar(parent);
break;
}
}
editor->installEventFilter(const_cast<DelegateAction*>(this));
return editor;
}
void DelegateAction::setEditorData(QWidget *editor, const QModelIndex &index) const
{
QVariant value = index.model()->data(index, Qt::DisplayRole);
switch (index.column())
{
case 0:
default:
{
QLabel* label = static_cast<QLabel*>(editor);
label->setText(value.toString());
break;
}
case 1:
{
QComboBox* combo = static_cast<QComboBox*>(editor);
combo->setCurrentIndex(combo->findText(value.toString()));
break;
}
case 4:
{
QProgressBar* progress = static_cast<QProgressBar*>(editor);
progress->setValue(value.toInt());
break;
}
}
}
void DelegateAction::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
{
QVariant value;
switch (index.column())
{
case 0:
default:
{
value = static_cast<QLabel*>(editor)->text();
break;
}
case 1:
{
value = static_cast<QComboBox*>(editor)->currentText();
break;
}
case 4:
{
value = static_cast<QProgressBar*>(editor)->value();
break;
}
}
model->setData(index, value);
}
void DelegateAction::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
editor->setGeometry(option.rect);
}
模型。
#ifndef MODELACTIONS_H
#define MODELACTIONS_H
#include <QAbstractTableModel>
#include <Unit.h>
class ModelAction : public QAbstractTableModel
{
Q_OBJECT
public:
explicit ModelAction(QObject *parent = 0);
int rowCount(const QModelIndex &parent = QModelIndex()) const;
int columnCount(const QModelIndex &parent = QModelIndex()) const;
QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
Qt::ItemFlags flags(const QModelIndex &index) const;
QVariant headerData(int section, Qt::Orientation orientation, int role) const;
bool setData(const QModelIndex &index, const QVariant &value, int role);
void sort(int column, Qt::SortOrder order);
void setUnits(const QList<Unit*>* units);
private:
const QList<Unit*>* units;
bool ascending[5];
};
#endif // MODELACTIONS_H
#include "ModelAction.h"
ModelAction::ModelAction(QObject *parent) :
QAbstractTableModel(parent),
units(0)
{
}
int ModelAction::rowCount(const QModelIndex &parent) const
{
if (units == 0)
{
return 0;
}
else
{
return units->length();
}
}
int ModelAction::columnCount(const QModelIndex &parent) const
{
return 5;
}
QVariant ModelAction::data(const QModelIndex &index, int role) const
{
if (index.isValid() == false)
{
return QVariant();
}
if (role == Qt::TextAlignmentRole)
{
if (index.column() == 0 || index.column() == 2)
{
return int(Qt::AlignLeft | Qt::AlignVCenter);
}
else
{
return int(Qt::AlignRight | Qt::AlignVCenter);
}
}
else if (role == Qt::DisplayRole)
{
if (index.column() == 0)
{
// Unit's id.
return index.row() + 1;
}
else if (index.column() == 1)
{
return "bob";
// Unit's Action.
//return mechs.at(index.row())->getWeight();
}
else if (index.column() == 2)
{
// Unit's Action start.
//return mechs.at(index.row())->getTechnology();
}
else if (index.column() == 3)
{
// Unit's Action end.
//return Currency::numberToCurrency(mechs.at(index.row())->getPurchaseValue());
}
else if (index.column() == 4)
{
// Unit's Action progress.
//return Currency::numberToCurrency(mechs.at(index.row())->getSellValue());
}
}
return QVariant();
}
QVariant ModelAction::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role != Qt::DisplayRole)
{
return QVariant();
}
if (orientation == Qt::Horizontal)
{
if (section == 0)
{
return "Id";
}
else if (section == 1)
{
return "Action";
}
else if (section == 2)
{
return "Begin Time";
}
else if (section == 3)
{
return "End Time";
}
else if (section == 4)
{
return "Progress";
}
}
return QVariant();
}
void ModelAction::sort(int column, Qt::SortOrder order)
{
// MechCompare compare;
// compare.column = column;
// ascending[column] = !ascending[column];
// compare.ascending = ascending[column];
// qSort(mechs.begin(), mechs.end(), compare);
// reset();
}
void ModelAction::setUnits(const QList<Unit *> *units)
{
this->units = units;
reset();
}
Qt::ItemFlags ModelAction::flags(const QModelIndex &index) const
{
switch (index.column())
{
case 0:
default:
{
return Qt::NoItemFlags;
break;
}
case 1:
{
return Qt::ItemIsEditable | Qt::ItemIsEnabled;
}
}
}
bool ModelAction::setData(const QModelIndex &index, const QVariant &value, int role)
{
switch (index.column())
{
case 1:
{
}
}
}
我知道的唯一问题是ModelAction :: setData（）函数不完整。我必须返回并编辑该模型显示的数据类，然后才能完成该子例程。仍然显示组合框和进度条，只是没有做任何事情。
在这一点上，我只能看到表中每一行的id号和测试文本“bob”。 QComboBox和QProgressBar是而不是呈现。
任何帮助将不胜感激。
JEC
谢谢，我会在今天晚些时候检查。 – jecjackal
是的，这就是我要找的，ty – jecjackal