Question

What event is called when the caret inside a TextCtrl / Styled TextCtrl has its position changed? I need to bind the event to show in the status bar, the current position of the caret.

Answer 1

Try binding the wx.EVT_KEY_UP event with the wx.TextCtrl object like this:

import wx

class MyForm(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "Show Caret Position", size=(400, 140))
        panel = wx.Panel(self, wx.ID_ANY)
        sizer = wx.BoxSizer(wx.VERTICAL)
        text = wx.StaticText(panel, -1, "Text:", (10, 22))
        self.textCtrl = wx.TextCtrl(
                panel,
                -1, "",
                (50,5),
                size=(250, 50),
                style=wx.TE_MULTILINE
            )
        self.textCtrl.SetInsertionPoint(0)
        self.textCtrl.Bind(wx.EVT_KEY_UP,self.onTextKeyEvent)
        self.textCtrl.Bind(wx.EVT_LEFT_UP,self.onTextKeyEvent)
        self.statusbar = self.CreateStatusBar(1)
        panel.SetSizerAndFit(sizer, wx.VERTICAL)

    def onTextKeyEvent(self, event):
        statusText = "Caret Position: "+str(self.textCtrl.GetInsertionPoint())
        self.SetStatusText(statusText,0)
        event.Skip()


#Run application
if __name__ == "__main__":
    app = wx.PySimpleApp()
    frame = MyForm()
    frame.Show()
    app.MainLoop()

I’ve tested on Windows 7 environment with Python 2.7 + wxPython 2.8.