使用QtDesigner創建自定義小部件PyQt4

Question

任何人都可以請建議我使用PyQt4創建自定義小部件的最佳做法？

我想看看如何處理添加Qpushbutton或QCheckboxGroup將在用戶點擊運行時

Answer 1

添加新行QTable創建QtDesigner您的自定義窗口小部件添加的QTable的Widgets細胞內部，將其保存爲name.ui 。在中華骨髓庫去文件name.ui位置，並使用此命令將其轉換爲Python模塊：

pyuic4 -x name.ui -o name.py 

以後你可以導入模塊（自定義部件），並且在GUI中使用它。在你的情況下，你可以使用QTableWidget和QPushButton以這種方式創建主窗口，但是你不能在表內創建動態按鈕。你必須重新實現QPushButton類是這樣的：

import YourMainWindowModule #YourMainWindowModule is MainWindow created in QtDesigner and it has QPushButton named "addRowButton" and QTableWidget named "tableWidget", both in grid layer 
import sys 
from PyQt4 import QtGui, QtCore 

class MainWindow(QtGui.QMainWindow): 
    def __init__(self, parent = None):  
     QtGui.QWidget.__init__(self, parent) 
     self.ui = YourMainWindowModule.Ui_MainWindow() 
     self.ui.setupUi(self) 

     self.connect(self.ui.addRowButton, QtCore.SIGNAL('clicked()'), self.AddRowToTable) 
     self.connect(self, QtCore.SIGNAL("printButtonContent(PyQt_PyObject)"), self.PrintButtonContent) 

    def AddRowToTable(self): 
     rowData = ["some text", 65454, "more text"]# add what you want 
     self.ui.tableWidget.setColumnCount(len(rowData)+1) 
     row = self.ui.tableWidget.rowCount() 
     self.ui.tableWidget.insertRow(row) 
     for col in range(0, len(rowData)): 
      item = QtGui.QTableWidgetItem(QtCore.QString(unicode(rowData[col]))) 
      self.ui.tableWidget.setItem(row, col, item) 
     button = OverloadedPushButton(row, self)# row number is this button's ID 
     button.setText("Button %s"%(row)) 
     self.ui.tableWidget.setCellWidget(row, len(rowData), button) 

    def PrintButtonContent(self, rowId): 
     print "Id of the row where clicked overloaded push button is: ", rowId 
     #here you have rowId, so you know in which row button is clicked and you can do what you want 

class OverloadedPushButton(QtGui.QPushButton): 
    def __init__(self, rowID, mainWindow): 
     super(OverloadedPushButton, self).__init__() 
     self.__rowID = rowID 
     self.__mainWindow = mainWindow 
     self.connect(self, QtCore.SIGNAL('clicked()'), self, QtCore.SLOT("triggerOutput()")) 

    @QtCore.pyqtSlot() 
    def triggerOutput(self): 
     self.__mainWindow.emit(QtCore.SIGNAL("printButtonContent(PyQt_PyObject)"), self.__rowID) 

def main(): 
    app = QtGui.QApplication(sys.argv) 
    form = MainWindow() 
    form.show() 
    app.exec_() 

if __name__ == '__main__': 
    main() 

我希望這有助於：當您按下addRowButton（簡單QPushButton），AddRowToTable會在表中添加一行。在行的最後一列將超載QPushButton，當按下時，發出信號printButtonContent到mainWindow，所以方法PrintButtonContent將打印rowId。你可以以這種方式重載任何你想要的小工具。