Question

急急 vb中命令按钮的的功能设计

比如我要设计一个按钮 ，它的功能是这样的 一按按钮就显示内容在文本框上 再按该按钮内容就删掉

Answer 1

我的最简单!!

首先拉一个按钮(command1)和一个文本框(text1),然后复制以下代码:
Dim a As Integer
Private Sub Command1_Click()
If a Mod 2 = 0 Then
Text1.Text = ""
a = a + 1
Else
Text1.Text = "您要显示的内容"
a = a + 1
End If
End Sub

Private Sub Form_Load()
a = 1
End Sub

Answer 2

Private Sub Command1_Click()
If Command1.Tag = "insert" Then
Text1.Text = ""
Command1.Tag = "delete"
Else
Text1.Text = "你好"
Command1.Tag = "insert"
End If
End Sub

Answer 3

Private Sub Command1_Click()
If Command1.Tag = "isPrinted" Then
Text1.Text = ""
Command1.Tag = "isDeleted"
Else
Text1.Text = "This is a TEST Message!"
Command1.Tag = "isPrinted"
End If
End Sub

Answer 4

Private Sub Command1_Click()
If Text1.Text <> "" Then
Text1.Text = ""
Else
Text1.Text = "你好"
End If
End Sub

Answer 5

那请问，我要是再按第3下你希望出现什么效果？