Qt- How to display the Text Edit String in a List View?
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01-07-2021 - |
문제
I have a QTextEdit , 2 QPushButtons (Add n Remove Buttons) and a QListView. When i am entering the text in the Text Edit and click the Add Button, the Text should be added in the List View. Then, if I select any one of the added text from the List View & Click the Remove Button, the Text should be removed from the ListView. I dont know how to achieve this. Plz Help me to solve this. Thanks in Advance.
해결책
Assuming you are using a QStandardItemModel and you have the following variables
QPushButton* addButton;
QPushButton* removeButton;
QTextEdit* textEdit;
QStandardItemModel* model;
MyObject* this;
the following code should do it:
connect(addButton, SIGNAL(clicked()), this, SLOT(onAddButtonClicked()));
connect(removeButton, SIGNAL(clicked()), this, SLOT(onRemoveButtonClicked()));
Then the two slots in your class MyObject you define do the following:
void MyObject::onAddButtonClicked() {
model->appendRow(new QStandardItem(textEdit->plainText());
}
void MyObject::onRemoveButtonClicked() {
if (model->rowCount() == 0)
return;
delete model->takeItem(model->rowCount() - 1);
}
Updating the view gets handled by QStandardItemModel
다른 팁
if you don't know how to use model/view/controller pattern, I'd recommend you to use QListWidget instead of QListView. Adding to QListWidget is way to simplier. You should create a slot where goes the signal from add button click, and a slot for delete button click.
Code for first slot:
m_pListWidget->addItem( m_pTextEdit->toPlainText() );
Code for second slot:
if ( QListWidgetItem* plwiCurrent = m_pListWidget->currentItem() )
{
m_pListWidget->takeItem( m_pListWidget->row( plwiCurrent ) );
delete plwiCurrent;
}