Question

我无法接收到拖放事件信号，我尝试了Internet上找到的所有解决方案，但均未成功。拖放事件不发送任何内容。（我可以在QlistWidegt中拖放项目，我希望事件被触发）

我想在触发拖放事件时打印（“ sth”）。

from PySide2 import QtCore from PySide2 import QtUiTools from PySide2 import QtWidgets from shiboken2 import wrapInstance from PySide2 import QtGui class ReOrder(QtWidgets.QDialog): def __init__(self, parent=maya_main_window()): super(ReOrder, self).__init__(parent) self.setWindowTitle("ReOrder ") self.setFixedSize(300,405) ################################### Calling The methods below self.CreateWidegts() self.Createlayouts() self.init_ui() self.setMouseTracking(True) ############### Working Area ########################### def init_ui(self): self.myListWidget.setDragEnabled(True) self.myListWidget.setAcceptDrops(True) self.myListWidget.setDefaultDropAction(QtCore.Qt.MoveAction) self.myListWidget.setDragDropMode(QtWidgets.QAbstractItemView.InternalMove) self.myListWidget.setFont(QtGui.QFont('Berlin Sans FB Demi', 12)) self.myListWidget.addItem("Item1","Item2","Item3") ##I tried to get the drag drop event using the QlistWidget build in signals but .. #self.myListWidget.currentItemChanged.connect(self.dosth) def CreateWidegts(self): self.myListWidget = QtWidgets.QListWidget() self.GoBtn = QtWidgets.QPushButton("ReOrder") def Createlayouts(self): mainLayout = QtWidgets.QVBoxLayout(self) mainLayout.addWidget(self.myListWidget) mainLayout.addWidget(self.GoBtn) def dosth(self): print("dosth") ###### Drag Drop event ########## def dropEvent(self, event): event.accept() print("Drop event Triggered") def dragEvent(self, event) event.accept() print("drag event Triggered")

Answer 1

无数小时的尝试后，我发现了这一点。解决方案：您需要创建一个自定义信号，因为未构建内部QListWidet拖放信号。您可以在一般事件中使用任何构建发出信号，例如MousePressEvent，DragEnterEvent，....。对我来说，我想要当您更改QList的顺序时执行……。

class TheQListWiget(QtWidgets.QListWidget):
    CustDragSig = QtCore.Signal()

    def dropEvent(self, event):
        super(TheQListWiget,self).dropEvent(event)
        event.accept()
        self.CustDragSig.emit()

其余代码：

class ReOrder(QtWidgets.QDialog):

    def __init__(self, parent=maya_main_window()):
        super(ReOrder, self).__init__(parent)
        self.setWindowTitle("ReOrder ")
        self.setFixedSize(300,405)
          ################### Calling The methods below                 
        
        self.CreateWidegts()
        self.Createlayouts()
        self.init_ui()

        self.setMouseTracking(True)
        
             ############### Working Area ###########################


    def init_ui(self):
        

        self.myListWidget.setDragEnabled(True)
        self.myListWidget.setAcceptDrops(True)
        self.myListWidget.setDefaultDropAction(QtCore.Qt.MoveAction)
        self.myListWidget.setDragDropMode(QtWidgets.QAbstractItemView.InternalMove)
        
       
        self.myListWidget.setFont(QtGui.QFont('Berlin Sans FB Demi', 12))
        self.myListWidget.addItem("Item1","Item2","Item3")
        
        self.myListWidget.CustDragSig.connect(self.do_sth)

    def CreateWidegts(self):
        self.myListWidget = TheQListWiget() ### Your QList must from CustomClass
        self.GoBtn = QtWidgets.QPushButton("ReOrder")


    def Createlayouts(self):
        mainLayout = QtWidgets.QVBoxLayout(self) 
        mainLayout.addWidget(self.myListWidget)
        mainLayout.addWidget(self.GoBtn)

    def do_sth(self):
        print("Custom Signal Emitted !")

QListWidget拖放事件

1 个答案: