Bdtjtk

I have QTablewidget and I want to use a mousemoveevent on a particular cell B. When mouse moves over this cell B, a message would appear or be printed. I have created the constructor, but it really does not work. Every thing is allright expect from those lines of code.

def mouseMoveEvent(self, event):

    it = self.item(self.rowCount(),1) 

    it.QToolTip.showText('Insert')

    self.onHovered()

Keep in mind that Qtooltip is assigned when the cell is clicked and works. But I want to do this by MouseMoveevent. Maybe my constructor of MouseEvent code is not right.

Expecting to behave.

import sys

from PyQt5 import QtCore, QtGui, QtWidgets





def copy_widget(w):

    if isinstance(w, QtWidgets.QWidget):

        new_w = type(w)()

        if isinstance(w, QtWidgets.QComboBox):

            vals = [w.itemText(ix) for ix in range(w.count())]

            new_w.addItems(vals)

        return new_w



class LoadTable(QtWidgets.QTableWidget):

    def __init__(self, parent=None):

        super(LoadTable, self).__init__(1, 5, parent)

        self.setFont(QtGui.QFont("Helvetica", 10, QtGui.QFont.Normal, italic=False))   

        headertitle = ("A","B","C","D","E")

        self.setHorizontalHeaderLabels(headertitle)

        self.verticalHeader().hide()

        self.horizontalHeader().setHighlightSections(False)

        self.horizontalHeader().setSectionResizeMode(QtWidgets.QHeaderView.Fixed)



        self.setSelectionMode(QtWidgets.QAbstractItemView.NoSelection)

        self.setColumnWidth(0, 130)



        combox_lay = QtWidgets.QComboBox(self)

        combox_lay.addItems(["I","II"])

        self.setCellWidget(0, 4, combox_lay)



        self.cellChanged.connect(self._cellclicked)





    @QtCore.pyqtSlot(int, int)

    def _cellclicked(self, r, c):

        it = self.item(r, c)

        it.setTextAlignment(QtCore.Qt.AlignCenter)

        n_it = self.item(r,1)

        n_it.setToolTip('Test') 





    @QtCore.pyqtSlot()

    def _addrow(self):

        rowcount = self.rowCount()

        self.insertRow(rowcount)

        combox_add = QtWidgets.QComboBox(self)

        combox_add.addItems(["I","II"])

        self.setCellWidget(rowcount, 4, combox_add)



    @QtCore.pyqtSlot()

    def _removerow(self):

        if self.rowCount() > 0:

            self.removeRow(self.rowCount()-1)



    @QtCore.pyqtSlot()

    def _copyrow(self):

        r = self.currentRow()

        if 0 <= r < self.rowCount():

            cells = {"items": , "widgets": }

            for i in range(self.columnCount()):

                it = self.item(r, i)

                if it:

                    cells["items"].append((i, it.clone()))

                w = self.cellWidget(r, i)

                if w:

                    cells["widgets"].append((i, copy_widget(w)))

            self.copy(cells, r+1)



    def copy(self, cells, r):

        self.insertRow(r)

        for i, it in cells["items"]:

            self.setItem(r, i, it)

        for i, w in cells["widgets"]:

            self.setCellWidget(r, i, w)



    def mouseMoveEvent(self, event):

        it = self.item(self.rowCount(),1)

        it.QToolTip.showText('Insert')

        self.onHovered()



    def onHovered(self):

        print("Works")





class ThirdTabLoads(QtWidgets.QWidget):

    def __init__(self, parent=None):

        super(ThirdTabLoads, self).__init__(parent)    



        table = LoadTable()



        add_button = QtWidgets.QPushButton("Add")

        add_button.clicked.connect(table._addrow)



        delete_button = QtWidgets.QPushButton("Delete")

        delete_button.clicked.connect(table._removerow)



        copy_button = QtWidgets.QPushButton("Copy")

        copy_button.clicked.connect(table._copyrow)



        button_layout = QtWidgets.QVBoxLayout()

        button_layout.addWidget(add_button, alignment=QtCore.Qt.AlignBottom)

        button_layout.addWidget(delete_button, alignment=QtCore.Qt.AlignTop)

        button_layout.addWidget(copy_button, alignment=QtCore.Qt.AlignTop)



        tablehbox = QtWidgets.QHBoxLayout()

        tablehbox.setContentsMargins(10, 10, 10, 10)

        tablehbox.addWidget(table)



        grid = QtWidgets.QGridLayout(self)

        grid.addLayout(button_layout, 0, 1)

        grid.addLayout(tablehbox, 0, 0)        





if __name__ == '__main__':

    app = QtWidgets.QApplication(sys.argv)

    w = ThirdTabLoads()

    w.show()

    sys.exit(app.exec_())

The itemEntered signal must be used, but to do this, the mouseTracking must be enabled in addition to the item. When a row is added it does not imply that the items for each box exist so I have modified it to create it.

class LoadTable(QtWidgets.QTableWidget):

    def __init__(self, parent=None):

        super(LoadTable, self).__init__(0, 5, parent)

        self.setFont(QtGui.QFont("Helvetica", 10, QtGui.QFont.Normal, italic=False))   

        headertitle = ("A","B","C","D","E")

        self.setHorizontalHeaderLabels(headertitle)

        self.verticalHeader().hide()

        self.horizontalHeader().setHighlightSections(False)

        self.horizontalHeader().setSectionResizeMode(QtWidgets.QHeaderView.Fixed)

        self.setSelectionMode(QtWidgets.QAbstractItemView.NoSelection)

        self.setColumnWidth(0, 130)



        self.setMouseTracking(True)

        self.itemEntered.connect(self.on_itemEntered)

        self._addrow()



    def on_itemEntered(self, it):

        QtWidgets.QToolTip.hideText()

        if it.column() == 1:

            r = self.visualItemRect(it)

            p = self.viewport().mapToGlobal(QtCore.QPoint(r.center().x(), r.top()))

            QtWidgets.QToolTip.showText(p, "Insert")



    @QtCore.pyqtSlot()

    def _addrow(self):

        rowcount = self.rowCount()

        self.insertRow(rowcount)

        combox_add = QtWidgets.QComboBox(self)

        combox_add.addItems(["I","II"])

        self.setCellWidget(rowcount, 4, combox_add)

        for c in range(self.columnCount()):

            self.setItem(rowcount, c, QtWidgets.QTableWidgetItem())

    # ...