为什么 SetCellEditor 在 self.m_grid_3.ClearGrid() 之后重新应用时会导致错误

Question

每次使用组合框 select 新值时，以下代码都会填充一个网格。代码第一次运行时运行良好，并创建了一个填充网格，在第 4 列的每个单元格中都有一个下拉菜单。但是，当我 select 第二个新值并且函数执行 self.m_grid_3.ClearGrid( ) 并重新填充我收到以下错误。

  self.m_grid3.SetCellEditor(row, col, self.choice_editor)
  File "C:\Python27\lib\site-packages\wx-3.0-msw\wx\grid.py", line 2000, in SetCellEditor
  return _grid.Grid_SetCellEditor(*args, **kwargs)
  TypeError: in method 'Grid_SetCellEditor', expected argument 4 of type 'wxGridCellEditor *'

在 col4 中选择下拉菜单然后崩溃 python。

关于如何解决这个问题的任何想法。

这是有问题的代码。

class Inspection(BulkUpdate):
    def __init__(self, parent):
        BulkUpdate.__init__(self, parent)
        list = EmployeeList()
        list_climbers = list.get_climbers()
        for name in list_climbers:
            self.edit_kit_comboBox.Append(str(name.employee))
        choices = ["Yes", "No", "Not Checked"]
        self.choice_editor = wx.grid.GridCellChoiceEditor(choices, True)


    def on_engineer_select( self, event ):
        self.m_grid3.ClearGrid()
        person = self.edit_kit_comboBox.GetValue()
        list = KitList()
        equipment = list.list_of_equipment(person, 1)
        rows = len(equipment)

        for row in range(0, rows):
            for col in range(0, 5):
                print "row = %s col = %s" % (row, col)
                if col == 4:
                    self.m_grid3.SetCellValue(row, col+2, str(equipment[row][col]))
                    self.m_grid3.SetCellValue(row, col, "Pass")
                    self.m_grid3.SetCellEditor(row, col, self.choice_editor)
                else:
                    self.m_grid3.SetCellValue(row, col, str(equipment[row][col]))

代码在第二次填充网格时停止在第二个循环中。这几天我一直在努力解决这个问题。

Answer 1

尝试将此添加到 __init__：

self.choice_editor.IncRef()

我的猜测是当您调用 ClearGrid 时编辑器对象的 C++ 部分被删除了。给它额外的参考告诉网格你想保留它。

Answer 2

回答添加

self.choice_editor.IncRef()

我将选择列表定义与

一起移到了函数中

self.choice_editor.IncRef()

所以现在看起来像这样

def on_engineer_select( self, event ):
    self.m_grid3.ClearGrid()
    choices = ["Pass", "Fail", "Not Checked"]
    self.choice_editor = wx.grid.GridCellChoiceEditor(choices, False)
    person = self.edit_kit_comboBox.GetValue()
    list = KitList()
    equipment = list.list_of_equipment(person, 1)
    print "Length of equipment = %s" % len(equipment)
    rows = len(equipment)
    for row in range(0, rows):
        for col in range(0, 5):
            print "row = %s col = %s" % (row, col)
            if col == 4:
                self.choice_editor.IncRef()
                self.m_grid3.SetCellValue(row, col+2, str(equipment[row][col]))
                self.m_grid3.SetCellValue(row, col+1, str(date.today()))
                self.m_grid3.SetCellEditor(row, col, self.choice_editor)
                self.m_grid3.SetCellValue(row, col, "Pass")

            else:
                self.m_grid3.SetCellValue(row, col, str(equipment[row][col]))

现在代码可以正常工作了。

为什么 SetCellEditor 在 self.m_grid_3.ClearGrid() 之后重新应用时会导致错误

Why does SetCellEditor cause error when reapplied after self.m_grid_3.ClearGrid()

python

wxpython