Private Sub Text1_KeyDown(KeyCode As Integer, Shift As Integer)
Const alt = 4
Const key_f2 = &H71
altdown% = (Shift And alt) > 0
f2down% = (KeyCode = key_f2)
If altdown% And f2down% Then
Text1.Text = "ab1"
End If
End Sub
这段代码里有各种符号 它们是什么意思啊 可以说的详细点不??