QComboBox in QTreeWidget

[yes756]

Hi, all.

I inserted a QComboBox using setItemWidget() in QTreeWidget.

The issue I am having is when I click on the QComboBox, the list drops down and then immediately closes again, so it is impossible to select an item on the list.

Thanks in advance for any suggestion.

[e8johan]

Could you please show some source code?

[yes756]

Could you please show some source code?

// TRW_OHEDIT is a Object name of QTreeWidget.
// m_name is a string.
void BS_OHEdit::SetTreeViewOfEdit2()
{
	QTreeWidgetItem *name = new QTreeWidgetItem(TRW_OHEDIT);
	QTreeWidgetItem *byte = new QTreeWidgetItem(name);
	QTreeWidgetItem *format = new QTreeWidgetItem(name);
	QTreeWidgetItem *bit1_4 = new QTreeWidgetItem(name);
	QTreeWidgetItem *req = new QTreeWidgetItem(name);
	QTreeWidgetItem *bit5_8 = new QTreeWidgetItem(name);
	QTreeWidgetItem *channel = new QTreeWidgetItem(name);
 
	cb_edit1 = new QComboBox(this);		// format
	cb_edit2 = new QComboBox(this);		// request
	cb_edit3 = new QComboBox(this);		// channel
 
	cb_edit1->setFixedSize(70, 35);
	cb_edit1->addItems(QStringList() << "Encode" << "Binary");
	cb_edit2->setFixedHeight(35);
	cb_edit2->addItems(MakeNameOfK1("req"));
	cb_edit3->setFixedSize(200, 35);
	cb_edit3->addItems(MakeNameOfK1("channel"));
 
	le_edit1 = new QLineEdit(this);	// bits 1-4
	le_edit2 = new QLineEdit(this);	// bits 5-8
 
	le_edit1->setFixedSize(50, 35);
	le_edit1->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
	le_edit1->setInputMask("BBBB;0");
	le_edit1->setEnabled(false);
	le_edit2->setFixedSize(50, 35);
	le_edit2->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
	le_edit2->setInputMask("BBBB;0");
	le_edit2->setEnabled(false);
 
	name->setText(0, m_name);
	byte->setText(0, "Byte");				byte->setText(1, NameOfByte(m_name));
	format->setText(0, "Format");		TRW_OHEDIT->setItemWidget(format, 1, cb_edit1);
	bit1_4->setText(0, "Bits 1-4");		TRW_OHEDIT->setItemWidget(bit1_4, 1, le_edit1);
	req->setText(0, "Request");			TRW_OHEDIT->setItemWidget(req, 1, cb_edit2);
	bit5_8->setText(0, "Bits 5-8");		TRW_OHEDIT->setItemWidget(bit5_8, 1, le_edit2);
	channel->setText(0, "Channel");	TRW_OHEDIT->setItemWidget(channel, 1, cb_edit3);
 
	connect(cb_edit1, SIGNAL(currentIndexChanged(QString)), this, SLOT(cb_format_edit2_currentIndexChanged(QString)));
	connect(cb_edit2, SIGNAL(currentIndexChanged(int)), this, SLOT(cb_req_edit2_currentIndexChanged(int)));
	connect(cb_edit3, SIGNAL(currentIndexChanged(int)), this, SLOT(cb_channel_edit2_currentIndexChanged(int)));
	connect(le_edit1, SIGNAL(textChanged(QString)), this, SLOT(le_bit14_edit2_textChanged()));
	connect(le_edit2, SIGNAL(textChanged(QString)), this, SLOT(le_bit58_edit2_textChanged()));
 
	TRW_OHEDIT->expandAll();
}

// TRW_OHEDIT is a Object name of QTreeWidget.
// m_name is a string.
void BS_OHEdit::SetTreeViewOfEdit2()
{
	QTreeWidgetItem *name = new QTreeWidgetItem(TRW_OHEDIT);
	QTreeWidgetItem *byte = new QTreeWidgetItem(name);
	QTreeWidgetItem *format = new QTreeWidgetItem(name);
	QTreeWidgetItem *bit1_4 = new QTreeWidgetItem(name);
	QTreeWidgetItem *req = new QTreeWidgetItem(name);
	QTreeWidgetItem *bit5_8 = new QTreeWidgetItem(name);
	QTreeWidgetItem *channel = new QTreeWidgetItem(name);

	cb_edit1 = new QComboBox(this);		// format
	cb_edit2 = new QComboBox(this);		// request
	cb_edit3 = new QComboBox(this);		// channel

	cb_edit1->setFixedSize(70, 35);
	cb_edit1->addItems(QStringList() << "Encode" << "Binary");
	cb_edit2->setFixedHeight(35);
	cb_edit2->addItems(MakeNameOfK1("req"));
	cb_edit3->setFixedSize(200, 35);
	cb_edit3->addItems(MakeNameOfK1("channel"));

	le_edit1 = new QLineEdit(this);	// bits 1-4
	le_edit2 = new QLineEdit(this);	// bits 5-8

	le_edit1->setFixedSize(50, 35);
	le_edit1->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
	le_edit1->setInputMask("BBBB;0");
	le_edit1->setEnabled(false);
	le_edit2->setFixedSize(50, 35);
	le_edit2->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
	le_edit2->setInputMask("BBBB;0");
	le_edit2->setEnabled(false);

	name->setText(0, m_name);
	byte->setText(0, "Byte");				byte->setText(1, NameOfByte(m_name));
	format->setText(0, "Format");		TRW_OHEDIT->setItemWidget(format, 1, cb_edit1);
	bit1_4->setText(0, "Bits 1-4");		TRW_OHEDIT->setItemWidget(bit1_4, 1, le_edit1);
	req->setText(0, "Request");			TRW_OHEDIT->setItemWidget(req, 1, cb_edit2);
	bit5_8->setText(0, "Bits 5-8");		TRW_OHEDIT->setItemWidget(bit5_8, 1, le_edit2);
	channel->setText(0, "Channel");	TRW_OHEDIT->setItemWidget(channel, 1, cb_edit3);

	connect(cb_edit1, SIGNAL(currentIndexChanged(QString)), this, SLOT(cb_format_edit2_currentIndexChanged(QString)));
	connect(cb_edit2, SIGNAL(currentIndexChanged(int)), this, SLOT(cb_req_edit2_currentIndexChanged(int)));
	connect(cb_edit3, SIGNAL(currentIndexChanged(int)), this, SLOT(cb_channel_edit2_currentIndexChanged(int)));
	connect(le_edit1, SIGNAL(textChanged(QString)), this, SLOT(le_bit14_edit2_textChanged()));
	connect(le_edit2, SIGNAL(textChanged(QString)), this, SLOT(le_bit58_edit2_textChanged()));

	TRW_OHEDIT->expandAll();
}

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Thank you for your reply.