取得TextBox、RichTextBox光标所在的行和列(支持中文)修正

'************************************************************
'功能：取得TextBox、RichTextBox光标所在的行和列

'支持中文，一个汉字算一列
'有问题请给我写邮件
'作者：Matrix
'邮件：ASPBIT@163.COM
'2003-01-24修正了马虎的错误
'************************************************************

Option Explicit

Public Const WM_USER = &H400
Public Const EM_EXGETSEL = WM_USER + 52

Public Const EM_LINEFROMCHAR = &HC9
Public Const EM_LINEINDEX = &HBB
Public Const EM_GETSEL = &HB0

Public Type CHARRANGE
    cpMin As Long
    cpMax As Long
End Type

Public Type POINTAPI
        x As Long
        y As Long
End Type

Public Declare Function SendMessage Lib "user32" Alias _
        "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As _
   &nb