Drag and Drop Text between tableview
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Hi, i need to drag text from a tableview (Elenco) to another tableview (Piano)
mModel = new QSqlTableModel(this); mModel->setTable("ORDINI"); ui->tableView_Elenco->setModel(mModel); // Ordina al click su Header ui->tableView_Elenco->setSortingEnabled(true); ui->tableView_Elenco->horizontalHeader()->setSectionsClickable(1); ui->tableView_Elenco->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents); ui->tableView_Elenco->setColumnHidden(0,true); ui->tableView_Elenco->setColumnHidden(1,true); ui->tableView_Elenco->setColumnHidden(2,true); ui->tableView_Elenco->setColumnHidden(11,true); ui->tableView_Elenco->setColumnHidden(12,true); ui->tableView_Elenco->setColumnHidden(13,true); ui->tableView_Elenco->setColumnHidden(14,true); ui->tableView_Elenco->setColumnHidden(15,true); ui->tableView_Elenco->setColumnHidden(16,true); ui->tableView_Elenco->setEditTriggers(QAbstractItemView::NoEditTriggers); //DnD ui->tableView_Elenco->setDragEnabled(true); ui->tableView_Elenco->setAcceptDrops(true); ui->tableView_Elenco->setDropIndicatorShown(true); ui->tableView_Elenco->setDefaultDropAction(Qt::CopyAction); ui->tableView_Elenco->setDragDropMode(QAbstractItemView::DragOnly); ui->tableView_Elenco->setDragDropOverwriteMode(false); //DnD ui->tableView_Elenco->show();// TABLEVIEW PIANO QStandardItemModel *model = new QStandardItemModel(7,6,this); //Rows,Columns //INTESTAZIONE COLONNE model->setHorizontalHeaderItem(0, new QStandardItem(QString("MACCHINA"))); model->setHorizontalHeaderItem(1, new QStandardItem(QString("1"))); model->setHorizontalHeaderItem(2, new QStandardItem(QString("2"))); model->setHorizontalHeaderItem(3, new QStandardItem(QString("3"))); model->setHorizontalHeaderItem(4, new QStandardItem(QString("4"))); model->setHorizontalHeaderItem(5, new QStandardItem(QString("5"))); model->setHorizontalHeaderItem(6, new QStandardItem(QString("6"))); // MACCHINE model->setItem(0,0,new QStandardItem(QString("PRESSA T63"))); model->setItem(1,0,new QStandardItem(QString("PRESSA T100"))); model->setItem(2,0,new QStandardItem(QString("PRESSA T160"))); model->setItem(3,0,new QStandardItem(QString("PRESSA T199"))); model->setItem(4,0,new QStandardItem(QString("PRESSA T200"))); model->setItem(5,0,new QStandardItem(QString("PRESSA T201"))); model->setItem(6,0,new QStandardItem(QString("TRAPANI"))); model->setItem(7,0,new QStandardItem(QString("OMERA/PIEGAT"))); model->setItem(8,0,new QStandardItem(QString("CARTATRICE"))); model->setItem(9,0,new QStandardItem(QString("TRONCA/CNC"))); model->setItem(10,0,new QStandardItem(QString("PUNT/MONTA"))); model->setItem(11,0,new QStandardItem(QString("SALDATRICI"))); model->setItem(12,0,new QStandardItem(QString("ROBOT"))); ui->tableView_Piano->horizontalHeader()->setSectionsClickable(1); ui->tableView_Piano->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents); ui->tableView_Piano->setModel(model); //DnD ui->tableView_Piano->setDragEnabled(false); ui->tableView_Piano->setAcceptDrops(true); ui->tableView_Piano->setDropIndicatorShown(true); ui->tableView_Piano->setDefaultDropAction(Qt::CopyAction); ui->tableView_Piano->setDragDropOverwriteMode(false); //Dndthis is my .h file:
#ifndef PIANIFICAPRODUZIONE_H #define PIANIFICAPRODUZIONE_H #include <QDialog> #include <QSqlTableModel> #include <QTextEdit> #include <QMouseEvent> #include <QDrag> #include <QMimeData> namespace Ui { class pianificaproduzione; } class pianificaproduzione : public QDialog { Q_OBJECT public: explicit pianificaproduzione(QWidget *parent = nullptr, const QString &Utente="", const QString &Password=""); ~pianificaproduzione() override; QString Utente, Password; //DnD protected: void dragEnterEvent(QDragEnterEvent *event) override; void dropEvent(QDropEvent *event) override; void mousePressEvent(QMouseEvent *event) override; //Fine DnD private: Ui::pianificaproduzione *ui; QSqlTableModel *mModel; QSqlDatabase mDatabase; }; #endif // PIANIFICAPRODUZIONE_Hnow i'm not able to implement (in .cpp file):
- dragEnterEvent;
- dropEvent;
- mousePressEvent.
Anyone can help me please??
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Hi,
Why are you trying to implement drag and drop in the dialog rather than the view itself ?
Interested in AI ? www.idiap.ch
Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct -
Hi,
Why are you trying to implement drag and drop in the dialog rather than the view itself ?
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@TheCipo76 said in Drag and Drop Text between tableview:
it's the correct way?
No, the correct way is via
QAbstractItemModel::canDropMimeData/QAbstractItemModel::dropMimeDatabut if you useQStandardItemModelthen it should already be implemented for free, no need do do anything manually"La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
~Napoleon BonaparteOn a crusade to banish setIndexWidget() from the holy land of Qt
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@TheCipo76 said in Drag and Drop Text between tableview:
it's the correct way?
No, the correct way is via
QAbstractItemModel::canDropMimeData/QAbstractItemModel::dropMimeDatabut if you useQStandardItemModelthen it should already be implemented for free, no need do do anything manually -
if i use QStandardItemModel i can't order tableview (i have int value in my database) with a simple click
You can, see
QSortFilterProxyModel. Anyway, is the source or the destination being anQSqlTableModel?"La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
~Napoleon BonaparteOn a crusade to banish setIndexWidget() from the holy land of Qt
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if i use QStandardItemModel i can't order tableview (i have int value in my database) with a simple click
You can, see
QSortFilterProxyModel. Anyway, is the source or the destination being anQSqlTableModel? -
I see, it's a bit fiddly because
QStandardItemModelby default appends child items.
Try something like this:#include <QApplication> #include <QMimeData> #include <QStandardItemModel> #include <QTableView> #include <QSqlDatabase> #include <QSqlQuery> #include <QSqlTableModel> #include <QHBoxLayout> class DragSqlTableModel : public QSqlTableModel{ Q_DISABLE_COPY(DragSqlTableModel) public: using QSqlTableModel::QSqlTableModel; Qt::ItemFlags flags(const QModelIndex &index) const override {return QSqlTableModel::flags(index) | Qt::ItemIsDragEnabled;} }; class OverwriteModel : public QStandardItemModel{ Q_DISABLE_COPY(OverwriteModel) public: using QStandardItemModel::QStandardItemModel; bool dropMimeData(const QMimeData *data, Qt::DropAction, int, int, const QModelIndex &parent) override { const QByteArray mimeData = data->data("application/x-qabstractitemmodeldatalist"); QDataStream mimeReader(mimeData); int junk; QMap<int,QVariant> modelData; for(;;){ mimeReader.startTransaction(); mimeReader >> junk >> junk >> modelData; if(!mimeReader.commitTransaction()) break; setItemData(parent,modelData); } return true; } }; int main(int argc, char **argv) { QApplication app(argc,argv); QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE"); db.setDatabaseName(":memory:"); if (!db.open()) return 1; QSqlQuery query; Q_ASSUME(query.exec("create table person (id int primary key, " "firstname varchar(20), lastname varchar(20))")); Q_ASSUME(query.exec("insert into person values(101, 'Danny', 'Young')")); Q_ASSUME(query.exec("insert into person values(102, 'Christine', 'Holand')")); Q_ASSUME(query.exec("insert into person values(103, 'Lars', 'Gordon')")); Q_ASSUME(query.exec("insert into person values(104, 'Roberto', 'Robitaille')")); Q_ASSUME(query.exec("insert into person values(105, 'Maria', 'Papadopoulos')")); OverwriteModel destination(3,2); DragSqlTableModel source(nullptr,db); source.setTable("person"); source.select(); QWidget mainWid; auto sourceView=new QTableView(&mainWid); sourceView->setDragEnabled(true); sourceView->setModel(&source); auto destinationView=new QTableView(&mainWid); destinationView->setModel(&destination); destinationView->setDragDropMode(QAbstractItemView::DropOnly); QHBoxLayout* mainLay = new QHBoxLayout(&mainWid); mainLay->addWidget(destinationView); mainLay->addWidget(sourceView); mainWid.show(); return app.exec(); }"La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
~Napoleon BonaparteOn a crusade to banish setIndexWidget() from the holy land of Qt
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I see, it's a bit fiddly because
QStandardItemModelby default appends child items.
Try something like this:#include <QApplication> #include <QMimeData> #include <QStandardItemModel> #include <QTableView> #include <QSqlDatabase> #include <QSqlQuery> #include <QSqlTableModel> #include <QHBoxLayout> class DragSqlTableModel : public QSqlTableModel{ Q_DISABLE_COPY(DragSqlTableModel) public: using QSqlTableModel::QSqlTableModel; Qt::ItemFlags flags(const QModelIndex &index) const override {return QSqlTableModel::flags(index) | Qt::ItemIsDragEnabled;} }; class OverwriteModel : public QStandardItemModel{ Q_DISABLE_COPY(OverwriteModel) public: using QStandardItemModel::QStandardItemModel; bool dropMimeData(const QMimeData *data, Qt::DropAction, int, int, const QModelIndex &parent) override { const QByteArray mimeData = data->data("application/x-qabstractitemmodeldatalist"); QDataStream mimeReader(mimeData); int junk; QMap<int,QVariant> modelData; for(;;){ mimeReader.startTransaction(); mimeReader >> junk >> junk >> modelData; if(!mimeReader.commitTransaction()) break; setItemData(parent,modelData); } return true; } }; int main(int argc, char **argv) { QApplication app(argc,argv); QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE"); db.setDatabaseName(":memory:"); if (!db.open()) return 1; QSqlQuery query; Q_ASSUME(query.exec("create table person (id int primary key, " "firstname varchar(20), lastname varchar(20))")); Q_ASSUME(query.exec("insert into person values(101, 'Danny', 'Young')")); Q_ASSUME(query.exec("insert into person values(102, 'Christine', 'Holand')")); Q_ASSUME(query.exec("insert into person values(103, 'Lars', 'Gordon')")); Q_ASSUME(query.exec("insert into person values(104, 'Roberto', 'Robitaille')")); Q_ASSUME(query.exec("insert into person values(105, 'Maria', 'Papadopoulos')")); OverwriteModel destination(3,2); DragSqlTableModel source(nullptr,db); source.setTable("person"); source.select(); QWidget mainWid; auto sourceView=new QTableView(&mainWid); sourceView->setDragEnabled(true); sourceView->setModel(&source); auto destinationView=new QTableView(&mainWid); destinationView->setModel(&destination); destinationView->setDragDropMode(QAbstractItemView::DropOnly); QHBoxLayout* mainLay = new QHBoxLayout(&mainWid); mainLay->addWidget(destinationView); mainLay->addWidget(sourceView); mainWid.show(); return app.exec(); } -
I see, it's a bit fiddly because
QStandardItemModelby default appends child items.
Try something like this:#include <QApplication> #include <QMimeData> #include <QStandardItemModel> #include <QTableView> #include <QSqlDatabase> #include <QSqlQuery> #include <QSqlTableModel> #include <QHBoxLayout> class DragSqlTableModel : public QSqlTableModel{ Q_DISABLE_COPY(DragSqlTableModel) public: using QSqlTableModel::QSqlTableModel; Qt::ItemFlags flags(const QModelIndex &index) const override {return QSqlTableModel::flags(index) | Qt::ItemIsDragEnabled;} }; class OverwriteModel : public QStandardItemModel{ Q_DISABLE_COPY(OverwriteModel) public: using QStandardItemModel::QStandardItemModel; bool dropMimeData(const QMimeData *data, Qt::DropAction, int, int, const QModelIndex &parent) override { const QByteArray mimeData = data->data("application/x-qabstractitemmodeldatalist"); QDataStream mimeReader(mimeData); int junk; QMap<int,QVariant> modelData; for(;;){ mimeReader.startTransaction(); mimeReader >> junk >> junk >> modelData; if(!mimeReader.commitTransaction()) break; setItemData(parent,modelData); } return true; } }; int main(int argc, char **argv) { QApplication app(argc,argv); QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE"); db.setDatabaseName(":memory:"); if (!db.open()) return 1; QSqlQuery query; Q_ASSUME(query.exec("create table person (id int primary key, " "firstname varchar(20), lastname varchar(20))")); Q_ASSUME(query.exec("insert into person values(101, 'Danny', 'Young')")); Q_ASSUME(query.exec("insert into person values(102, 'Christine', 'Holand')")); Q_ASSUME(query.exec("insert into person values(103, 'Lars', 'Gordon')")); Q_ASSUME(query.exec("insert into person values(104, 'Roberto', 'Robitaille')")); Q_ASSUME(query.exec("insert into person values(105, 'Maria', 'Papadopoulos')")); OverwriteModel destination(3,2); DragSqlTableModel source(nullptr,db); source.setTable("person"); source.select(); QWidget mainWid; auto sourceView=new QTableView(&mainWid); sourceView->setDragEnabled(true); sourceView->setModel(&source); auto destinationView=new QTableView(&mainWid); destinationView->setModel(&destination); destinationView->setDragDropMode(QAbstractItemView::DropOnly); QHBoxLayout* mainLay = new QHBoxLayout(&mainWid); mainLay->addWidget(destinationView); mainLay->addWidget(sourceView); mainWid.show(); return app.exec(); } -
I see, it's a bit fiddly because
QStandardItemModelby default appends child items.
Try something like this:#include <QApplication> #include <QMimeData> #include <QStandardItemModel> #include <QTableView> #include <QSqlDatabase> #include <QSqlQuery> #include <QSqlTableModel> #include <QHBoxLayout> class DragSqlTableModel : public QSqlTableModel{ Q_DISABLE_COPY(DragSqlTableModel) public: using QSqlTableModel::QSqlTableModel; Qt::ItemFlags flags(const QModelIndex &index) const override {return QSqlTableModel::flags(index) | Qt::ItemIsDragEnabled;} }; class OverwriteModel : public QStandardItemModel{ Q_DISABLE_COPY(OverwriteModel) public: using QStandardItemModel::QStandardItemModel; bool dropMimeData(const QMimeData *data, Qt::DropAction, int, int, const QModelIndex &parent) override { const QByteArray mimeData = data->data("application/x-qabstractitemmodeldatalist"); QDataStream mimeReader(mimeData); int junk; QMap<int,QVariant> modelData; for(;;){ mimeReader.startTransaction(); mimeReader >> junk >> junk >> modelData; if(!mimeReader.commitTransaction()) break; setItemData(parent,modelData); } return true; } }; int main(int argc, char **argv) { QApplication app(argc,argv); QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE"); db.setDatabaseName(":memory:"); if (!db.open()) return 1; QSqlQuery query; Q_ASSUME(query.exec("create table person (id int primary key, " "firstname varchar(20), lastname varchar(20))")); Q_ASSUME(query.exec("insert into person values(101, 'Danny', 'Young')")); Q_ASSUME(query.exec("insert into person values(102, 'Christine', 'Holand')")); Q_ASSUME(query.exec("insert into person values(103, 'Lars', 'Gordon')")); Q_ASSUME(query.exec("insert into person values(104, 'Roberto', 'Robitaille')")); Q_ASSUME(query.exec("insert into person values(105, 'Maria', 'Papadopoulos')")); OverwriteModel destination(3,2); DragSqlTableModel source(nullptr,db); source.setTable("person"); source.select(); QWidget mainWid; auto sourceView=new QTableView(&mainWid); sourceView->setDragEnabled(true); sourceView->setModel(&source); auto destinationView=new QTableView(&mainWid); destinationView->setModel(&destination); destinationView->setDragDropMode(QAbstractItemView::DropOnly); QHBoxLayout* mainLay = new QHBoxLayout(&mainWid); mainLay->addWidget(destinationView); mainLay->addWidget(sourceView); mainWid.show(); return app.exec(); }@VRonin i have copied the class definition into my dialog.h
#ifndef PIANIFICAPRODUZIONE_H #define PIANIFICAPRODUZIONE_H #include <QDialog> #include <QSqlTableModel> #include <QMimeData> #include <QTableView> #include <QStandardItemModel> #include <QSqlDatabase> #include <QSqlQuery> #include <QSqlTableModel> class DragSqlTableModel : public QSqlTableModel{ Q_DISABLE_COPY(DragSqlTableModel) public: using QSqlTableModel::QSqlTableModel; Qt::ItemFlags flags(const QModelIndex &index) const override {return QSqlTableModel::flags(index) | Qt::ItemIsDragEnabled;} }; class OverwriteModel : public QStandardItemModel{ Q_DISABLE_COPY(OverwriteModel) public: using QStandardItemModel::QStandardItemModel; bool dropMimeData(const QMimeData *data, Qt::DropAction, int, int, const QModelIndex &parent) override { const QByteArray mimeData = data->data("application/x-qabstractitemmodeldatalist"); QDataStream mimeReader(mimeData); int junk; QMap<int,QVariant> modelData; for(;;){ mimeReader.startTransaction(); mimeReader >> junk >> junk >> modelData; if(!mimeReader.commitTransaction()) break; setItemData(parent,modelData); } return true; } }; namespace Ui { class pianificaproduzione; } class pianificaproduzione : public QDialog { Q_OBJECT public: explicit pianificaproduzione(QWidget *parent = nullptr, const QString &Utente="", const QString &Password=""); ~pianificaproduzione(); QString Utente, Password; private: Ui::pianificaproduzione *ui; QSqlTableModel *mModel; QSqlDatabase mDatabase; DragSqlTableModel *source; OverwriteModel *model; }; #endif // PIANIFICAPRODUZIONE_Hi've used DragSqlTableModel instead QSqlTableModel in dialog.cpp
source = new DragSqlTableModel(this); source->setTable("ORDINI"); source->select(); ui->tableView_Elenco->setModel(source); ui->tableView_Elenco->setEditTriggers(QAbstractItemView::NoEditTriggers); ui->tableView_Elenco->setSelectionMode(QAbstractItemView::SingleSelection); ui->tableView_Elenco->setDragEnabled(true); ui->tableView_Elenco->setDropIndicatorShown(true); ui->tableView_Elenco->setSortingEnabled(true); // Ordina al click su Header ui->tableView_Elenco->horizontalHeader()->setSectionsClickable(1); ui->tableView_Elenco->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents); ui->tableView_Elenco->setColumnHidden(0, true); ui->tableView_Elenco->setColumnHidden(1, true); ui->tableView_Elenco->setColumnHidden(2, true); ui->tableView_Elenco->setColumnHidden(7, true); ui->tableView_Elenco->setColumnHidden(9, true); ui->tableView_Elenco->setColumnHidden(10, true); ui->tableView_Elenco->setColumnHidden(11, true); ui->tableView_Elenco->setColumnHidden(12, true); ui->tableView_Elenco->setColumnHidden(13, true); ui->tableView_Elenco->setColumnHidden(14, true); ui->tableView_Elenco->setColumnHidden(15, true); ui->tableView_Elenco->setColumnHidden(16, true); ui->tableView_Elenco->show(); // TABLEVIEW PIANO //QStandardItemModel *model = new QStandardItemModel(7,6,this); //Rows,Columns OverwriteModel *model = new OverwriteModel(7,6,this); //INTESTAZIONE COLONNE model->setHorizontalHeaderItem(0, new QStandardItem(QString("MACCHINA"))); model->setHorizontalHeaderItem(1, new QStandardItem(QString("1"))); model->setHorizontalHeaderItem(2, new QStandardItem(QString("2"))); model->setHorizontalHeaderItem(3, new QStandardItem(QString("3"))); model->setHorizontalHeaderItem(4, new QStandardItem(QString("4"))); model->setHorizontalHeaderItem(5, new QStandardItem(QString("5"))); model->setHorizontalHeaderItem(6, new QStandardItem(QString("6"))); // MACCHINE model->setItem(0,0,new QStandardItem(QString("PRESSA T63"))); model->setItem(1,0,new QStandardItem(QString("PRESSA T100"))); model->setItem(2,0,new QStandardItem(QString("PRESSA T160"))); model->setItem(3,0,new QStandardItem(QString("PRESSA T199"))); model->setItem(4,0,new QStandardItem(QString("PRESSA T200"))); model->setItem(5,0,new QStandardItem(QString("PRESSA T201"))); model->setItem(6,0,new QStandardItem(QString("TRAPANI"))); model->setItem(7,0,new QStandardItem(QString("OMERA/PIEGAT"))); model->setItem(8,0,new QStandardItem(QString("CARTATRICE"))); model->setItem(9,0,new QStandardItem(QString("TRONCA/CNC"))); model->setItem(10,0,new QStandardItem(QString("PUNT/MONTA"))); model->setItem(11,0,new QStandardItem(QString("SALDATRICI"))); model->setItem(12,0,new QStandardItem(QString("ROBOT"))); ui->tableView_Piano->horizontalHeader()->setSectionsClickable(1); ui->tableView_Piano->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents); ui->tableView_Piano->setModel(model); ui->tableView_Elenco->setDragDropMode(QAbstractItemView::DropOnly);but don't works.. when i try to drag text.. nothing happen..
i don't understand where is the problem..
Any help? -
Hi,
Why are you trying to implement drag and drop in the dialog rather than the view itself ?
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Works perfectly in a dialog as well:
#include <QApplication> #include <QMimeData> #include <QStandardItemModel> #include <QTableView> #include <QSqlDatabase> #include <QSqlQuery> #include <QSqlTableModel> #include <QHBoxLayout> #include <QDialog> #include <QTimer> class DragSqlTableModel : public QSqlTableModel{ Q_DISABLE_COPY(DragSqlTableModel) public: using QSqlTableModel::QSqlTableModel; Qt::ItemFlags flags(const QModelIndex &index) const override {return QSqlTableModel::flags(index) | Qt::ItemIsDragEnabled;} }; class OverwriteModel : public QStandardItemModel{ Q_DISABLE_COPY(OverwriteModel) public: using QStandardItemModel::QStandardItemModel; bool dropMimeData(const QMimeData *data, Qt::DropAction, int, int, const QModelIndex &parent) override { const QByteArray mimeData = data->data("application/x-qabstractitemmodeldatalist"); QDataStream mimeReader(mimeData); int junk; QMap<int,QVariant> modelData; for(;;){ mimeReader.startTransaction(); mimeReader >> junk >> junk >> modelData; if(!mimeReader.commitTransaction()) break; setItemData(parent,modelData); } return true; } }; int main(int argc, char **argv) { QApplication app(argc,argv); QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE"); db.setDatabaseName(":memory:"); if (!db.open()) return 1; QSqlQuery query; Q_ASSUME(query.exec("create table person (id int primary key, " "firstname varchar(20), lastname varchar(20))")); Q_ASSUME(query.exec("insert into person values(101, 'Danny', 'Young')")); Q_ASSUME(query.exec("insert into person values(102, 'Christine', 'Holand')")); Q_ASSUME(query.exec("insert into person values(103, 'Lars', 'Gordon')")); Q_ASSUME(query.exec("insert into person values(104, 'Roberto', 'Robitaille')")); Q_ASSUME(query.exec("insert into person values(105, 'Maria', 'Papadopoulos')")); OverwriteModel destination(3,2); DragSqlTableModel source(nullptr,db); source.setTable("person"); source.select(); QWidget mainWid; QDialog* subDialog = new QDialog(&mainWid); auto sourceView=new QTableView(subDialog); sourceView->setDragEnabled(true); sourceView->setModel(&source); auto destinationView=new QTableView(subDialog); destinationView->setModel(&destination); destinationView->setDragDropMode(QAbstractItemView::DropOnly); QHBoxLayout* mainLay = new QHBoxLayout(subDialog); mainLay->addWidget(destinationView); mainLay->addWidget(sourceView); mainWid.show(); QTimer::singleShot(1000,subDialog,&QDialog::exec); return app.exec(); }"La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
~Napoleon BonaparteOn a crusade to banish setIndexWidget() from the holy land of Qt
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Works perfectly in a dialog as well:
#include <QApplication> #include <QMimeData> #include <QStandardItemModel> #include <QTableView> #include <QSqlDatabase> #include <QSqlQuery> #include <QSqlTableModel> #include <QHBoxLayout> #include <QDialog> #include <QTimer> class DragSqlTableModel : public QSqlTableModel{ Q_DISABLE_COPY(DragSqlTableModel) public: using QSqlTableModel::QSqlTableModel; Qt::ItemFlags flags(const QModelIndex &index) const override {return QSqlTableModel::flags(index) | Qt::ItemIsDragEnabled;} }; class OverwriteModel : public QStandardItemModel{ Q_DISABLE_COPY(OverwriteModel) public: using QStandardItemModel::QStandardItemModel; bool dropMimeData(const QMimeData *data, Qt::DropAction, int, int, const QModelIndex &parent) override { const QByteArray mimeData = data->data("application/x-qabstractitemmodeldatalist"); QDataStream mimeReader(mimeData); int junk; QMap<int,QVariant> modelData; for(;;){ mimeReader.startTransaction(); mimeReader >> junk >> junk >> modelData; if(!mimeReader.commitTransaction()) break; setItemData(parent,modelData); } return true; } }; int main(int argc, char **argv) { QApplication app(argc,argv); QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE"); db.setDatabaseName(":memory:"); if (!db.open()) return 1; QSqlQuery query; Q_ASSUME(query.exec("create table person (id int primary key, " "firstname varchar(20), lastname varchar(20))")); Q_ASSUME(query.exec("insert into person values(101, 'Danny', 'Young')")); Q_ASSUME(query.exec("insert into person values(102, 'Christine', 'Holand')")); Q_ASSUME(query.exec("insert into person values(103, 'Lars', 'Gordon')")); Q_ASSUME(query.exec("insert into person values(104, 'Roberto', 'Robitaille')")); Q_ASSUME(query.exec("insert into person values(105, 'Maria', 'Papadopoulos')")); OverwriteModel destination(3,2); DragSqlTableModel source(nullptr,db); source.setTable("person"); source.select(); QWidget mainWid; QDialog* subDialog = new QDialog(&mainWid); auto sourceView=new QTableView(subDialog); sourceView->setDragEnabled(true); sourceView->setModel(&source); auto destinationView=new QTableView(subDialog); destinationView->setModel(&destination); destinationView->setDragDropMode(QAbstractItemView::DropOnly); QHBoxLayout* mainLay = new QHBoxLayout(subDialog); mainLay->addWidget(destinationView); mainLay->addWidget(sourceView); mainWid.show(); QTimer::singleShot(1000,subDialog,&QDialog::exec); return app.exec(); }@VRonin You're right!
i've put your code in new project's main.cpp and workshowever i 've wrote that i'm not able to use it..
not that your code don't work.Now i will retry to use it in my project.
Thank you and thanks to all others who help me every time.
