"操作错误!!!"Exit SubEnd If？啥情况？

Question

im src As IntegerDim dest As Integersrc = getindexOfTabName(sForm)dest = getindexOfTabName(sto)If (scr = -1) Or (dest = -1) ThenMsgBox "操作错误!!!"Exit SubEnd If

Answer 1

Dim src As Integer
Dim dest As Integer
src = 
getindexOfTabName(sForm) <--- 第三行提示子程序或函数未定义
dest = getindexOfTabName(sto)
If (scr = -1) Or 
(dest = -1) Then
MsgBox "操作错误!!!"
Exit Sub
End If