Wxpython网格内按钮

Question

我正在尝试向网格单元添加按钮。我正在使用最新的演示4.0.7和python 3.7（32bit）我修复了一个旧示例，位于：https://groups.google.com/forum/#!topic/wxpython-users/HhtKCxPVX_s问题是按钮无法正常工作，然后按下它会导致整个网格消失。

class MyCustomRenderer2(gridlib.GridCellRenderer):
def __init__(self):
    gridlib.GridCellRenderer.__init__(self)
    self.down = False
    self.click_handled = False

def Draw(self, grid, attr, dc, rect, row, col, isSelected):
    """This is called when the widget is Refreshed"""
    print ('drawing button')
    dc.Clear()
    if self.down:
        state = wx.CONTROL_PRESSED | wx.CONTROL_SELECTED
    else:
        state = 0

    #if not self.IsEnabled():
    #    state = wx.CONTROL_DISABLED
    #pt = self.ScreenToClient(wx.GetMousePosition())
    #if self.GetClientRect().Contains(pt):
    #    state |= wx.CONTROL_CURRENT

    wx.RendererNative.Get().DrawPushButton(grid, dc, rect, state)
    #extra logic required since a button gets drawn at various times that could be while the mouse button is held down
    if self.down and not self.click_handled:
        self.click_handled = True
        self.HandleClick()

def HandleClick(self):
    print ('clicked')

def GetBestSize(self, grid, attr, dc, row, col):
    text = grid.GetCellValue(row, col)
    dc.SetFont(attr.GetFont())
    w, h = dc.GetTextExtent(text)
    return wx.Size(w, h)


def Clone(self):
    return MyCustomRenderer2()

Answer 1

#!/usr/bin/python
# -*- coding: utf-8 -*-
# friendly coded by Laurent BEVILLE.
import  wx
import  wx.grid as  gridlib

#---------------------------------------------------------------------------
class myFrame(wx.Frame):
    def __init__(self, parent):
        wx.Frame.__init__(self, parent, -1, size=(400, 300))

        # ...
        self.gridBox = wx.BoxSizer(wx.VERTICAL) 
        # ...
        self.mainGrid = showGrid(self, numRows=5, numCols=5)
        # ...
        self.gridBox.Add(self.mainGrid)        
        self.SetSizerAndFit(self.gridBox)


class showGrid(gridlib.Grid):
    def __init__(self, parent, numRows, numCols):
        """Constructeur"""
        gridlib.Grid.__init__(self, parent, size=parent.GetSize())

        self.CreateGrid(numRows, numCols)
        self.SetRowLabelSize(50)
        # Display content
        self.displayContent()
        # ...
        self.handleEvents()        

    def displayContent(self):
        self.rd = myRenderer(self)
        # Button coordinates
        self.rend_row = 2
        self.rend_col = 1
        # ...
        self.SetCellValue(1, 0, 'Click on the Button')
        # Set Button in cell
        self.SetCellRenderer(self.rend_row, self.rend_col, self.rd)
         # Prevent button cell selection
        self.SetReadOnly(self.rend_row, self.rend_col, True)

    def handleEvents(self):
        self.Bind(gridlib.EVT_GRID_SELECT_CELL, self.onCellSelected)

    def onCellSelected(self, event):
        # # Button inverted switch var
        switch_inv = {False: wx.CONTROL_NONE, True: wx.CONTROL_PRESSED}
        # To avoid bug verify if it's possible to enable cell control
        # Typical bug : "wx._core.wxAssertionError: C++ assertion "CanEnableCellControl()" failed at /home/... 
        # in EnableCellEditControl(): can't enable editing for this cell!"
        if self.CanEnableCellControl():
            self.EnableCellEditControl()
        # Invert button status : CONTROL_NONE (inactive) / wx.CONTROL_PRESSED (active)
        self.rd.buttonState = switch_inv[not self.rd.boolstat['boolstat']]
        # Print button status
        print("Button status : {0}".format({0:"inactive", 4:"active"}[self.rd.buttonState]))

class myRenderer(wx.grid.GridCellRenderer):
    def __init__(self, parent):
        wx.grid.GridCellRenderer.__init__(self)

        # Button neutral state
        self.boolstat = {'boolstat': True}
        # Button state when initializing
        self.buttonState = 0

    def Draw(self, grid, attr, dc, rect, row, col, isSelected):
        # Button switch var
        switch = {wx.CONTROL_NONE: False, wx.CONTROL_PRESSED: True}
        # Renderer state
        self.boolstat['boolstat'] =  switch[self.buttonState]
        # ...
        wx.RendererNative.Get().DrawPushButton(grid, dc, rect, self.buttonState)


#---------------------------------------------------------------------------

if __name__ == '__main__':
    app = wx.App()
    frame = myFrame(None)
    frame.Show()
    frame.Centre()
    app.MainLoop()