wxPython控件学习之wx.grid.Grid 表格控件

wxPython控件学习之wx.grid.Grid (包括对GridCellEditor和GridCelRender的扩展，以支持更多的grid cell 样式, 以GridCellColorEditor为例)

wx.Grid 及其相关的类是用来显示和编辑类表格样式的数据。该控件为显示，编辑数据源提及交互供了丰富的特征。

wx.GridTableBase类控制要显示的实际数据。可以call CreateGrid()产生一个该类的实例对象。

wx.GridCellRenderer 基类，负责对单元格进行绘画。现在提供了默认的几种派生。

• wxGridCellBoolRenderer 显示CheckBox样式
• wxGridCellFloatRenderer
• wxGridCellNumberRenderer
• wxGridCellStringRenderer

wx.GridCellEditor 基类，负责在cell editing状态下，显示对应的控件。现在提供了默认的几种派生。

• wxGridCellBoolEditor
• wxGridCellChoiceEditor
• wxGridCellFloatEditor
• wxGridCellNumberEditor
• wxGridCellTextEditor

如何添加、删除行，列和单元格？

本例中使用SetTable() 作为grid 的数据源。 那么重点来研究在这个情况下如何对grid 和 数据源进行增删改。

GridTableMessage 类，可以用来向表发送一些message，本例中 是对行的增删改操作， 那么我们只需要用其中的3个message：

GRIDTABLE_NOTIFY_ROWS_INSERTED 行插入的消息
GRIDTABLE_NOTIFY_ROWS_APPENDED
附近新行的消息
GRIDTABLE_NOTIFY_ROWS_DELETED 删除行的消息

GRIDTABLE_REQUEST_VIEW_GET_VALUES cell 值如果有更改的消息

1.在index插入一新行

grd.GridTableMessage(self,
grd.GRIDTABLE_NOTIFY_ROWS_INSERTED
,index
 改行所在的索引
,1 插入一行记录
)

2. 删除rowIndex行

grd.GridTableMessage(self,grd.GRIDTABLE_NOTIFY_ROWS_DELETED,
rowIndex,
 改行所在的索引
1 只删除一行

)

3. 附加一新行

grd.GridTableMessage(self,
grd.GRIDTABLE_NOTIFY_ROWS_APPENDED,
1
附近的新行个数
)

 1 #-*-coding:utf-8

 #-------------------------------------------------------------------------------
 # Name:        模块1
 # Purpose:
 #
 # Author:      ankier
 #
 # Created:     14/10/2012
 # Copyright:   (c) ankier 2012
 # Licence:     <your licence>
 #-------------------------------------------------------------------------------

 import wx, wx.grid as grd

 #定购的Grid cell ComboBox editor
 class GridCellComboBoxEditor(grd.PyGridCellEditor):
     def __init__(self, choices = []):
         grd.PyGridCellEditor.__init__(self)
         self.__Choices = choices

     def Create(self, parent, id, evtHandler):
         """
         Called to create the control, which must derive from wx.Control.
         *Must Override*
         """
         self.__Parent = parent
         self.__ComboBoxDialog = None
         self.__ComboBoxButton = wx.ComboBox(parent, id, value = "", choices =self.__Choices)
         self.__ComboBoxButton.SetEditable(False)
         self.SetControl(self.__ComboBoxButton)
         #添加新的event handler， 防止 弹出窗口后， cell 自动editor
         newEventHandler = wx._core.EvtHandler()
         if evtHandler:
             self.__ComboBoxButton.PushEventHandler(newEventHandler)
         self.__ComboBoxButton.Bind(wx.EVT_COMBOBOX, self.OnClick)

     def OnClick(self, event):
         self.endValue = self.__ComboBoxButton.GetStringSelection()

     def SetSize(self, rect):
         """
         Called to position/size the edit control within the cell rectangle.
         If you don't fill the cell (the rect) then be sure to override
         PaintBackground and do something meaningful there.
         """
         self.__ComboBoxButton.SetDimensions(rect.x,rect.y,rect.width+2,rect.height+2,wx.SIZE_ALLOW_MINUS_ONE)

     def Clone(self):
         """
         Create a new object which is the copy of this one
         *Must Override*
         """
         return GridCellComboBoxEditor()

     def BeginEdit(self, row, col, grid):
         """
         Fetch the value from the table and prepare the edit control
         to begin editing. Set the focus to the edit control.
         *Must Override*
         """
         self.startValue = grid.GetTable().GetValue(row, col)
         self.endValue = self.startValue
         self.__ComboBoxButton.SetStringSelection(self.startValue)

     def EndEdit(self, row, col, grid):
         """
         Complete the editing of the current cell. Returns True if the value
         has changed. If necessary, the control may be destroyed.
         *Must Override*
         """
         changed = False
         if self.endValue != self.startValue:
             changed = True
             grid.GetTable().SetValue(row, col, self.endValue) # update the table
             self.startValue = ''
         return changed

 #定购颜色cell colour column
 class GridCellComboBoxRender(grd.GridCellStringRenderer):
     def __init__(self):
         grd.GridCellStringRenderer.__init__(self)

转自http://www.cnblogs.com/ankier/archive/2012/10/14/2723364.html