Table Model / View Problem -- Data Not Displaying

[jhendersen]

Hello everyone,

I'm having a difficult time getting a table set up. I subclassed QAbstractTableModel as such:

int FileModel::rowCount(const QModelIndex &parent) const {
 
	return files.count();
}
int FileModel::columnCount(const QModelIndex &parent) const {
	return 4;
}
QVariant FileModel::data(const QModelIndex &index, int role) const {
	printf("row %d\n",(int)index.row());
	if (!index.isValid())
		return QVariant();
 
	if (index.row() >= files.size())
		return QVariant();
 
	if (role == Qt::DisplayRole) {
		printf("%s\n",files.value(file_list.at(index.row()))->m_path.c_str());
		return QString(files.value(file_list.at(index.row()))->m_path.c_str());
	} else {
		return QVariant();
	}
}

int FileModel::rowCount(const QModelIndex &parent) const {

	return files.count();
}
int FileModel::columnCount(const QModelIndex &parent) const {
	return 4;
}
QVariant FileModel::data(const QModelIndex &index, int role) const {
	printf("row %d\n",(int)index.row());
	if (!index.isValid())
		return QVariant();

	if (index.row() >= files.size())
		return QVariant();

	if (role == Qt::DisplayRole) {
		printf("%s\n",files.value(file_list.at(index.row()))->m_path.c_str());
		return QString(files.value(file_list.at(index.row()))->m_path.c_str());
	} else {
		return QVariant();
	}
}

To copy to clipboard, switch view to plain text mode 

I set the model in a view like this:

FileModel fmodel;
	QTableView *table = new QTableView(this); 
	table->setModel(&fmodel); 
	table->setAlternatingRowColors(true); 
	table->show();

FileModel fmodel;
	QTableView *table = new QTableView(this); 
	table->setModel(&fmodel); 
	table->setAlternatingRowColors(true); 
	table->show();

To copy to clipboard, switch view to plain text mode 

However, an empty table shows up with the correct number of rows and columns. I'm not sure why this is happening and I've tried just about everything I can think of.

Any ideas?

Thanks!

[jpn]

The model gets automatically destroyed when going out of scope. Allocate it on the heap:

FileModel* fmodel = new FileModel(this);
QTableView *table = new QTableView(this); 
table->setModel(fmodel);

FileModel* fmodel = new FileModel(this);
QTableView *table = new QTableView(this); 
table->setModel(fmodel);

To copy to clipboard, switch view to plain text mode 

PS. Have you noticed QDirModel?