VB技术上的问题。

我想给老师弄一个教学平台，但我没VB代码知识，现在在学习中，首先我弄了一个登陆界面。问题，写什么代码能使密码部分显示*号，并且校对帐号和密码，正确后运行另一个.exe文件？

追问：？？？不明白

答案：
textbox有属性的passwordChar属性里面填*，校队账号和密码用判断就行！正确后不用运行另一个exe你直接画一个成功登陆的Form就行了！
'声明API函数
Private Declare Function GetPixel Lib "gdi32" (ByVal hDC As Long, ByVal x As Long, ByVal y As Long) As Long
Private Declare Function CreateDC Lib "gdi32" Alias "CreateDCA" (ByVal lpDriverName As String, ByVal lpDeviceName As String, ByVal lpOutput As String, lpInitData As Any) As Long
Private Declare Function DeleteDC Lib "gdi32" (ByVal hDC As Long) As Long

Private Sub Command1_Click()
    Dim hDC As Long
    Dim rgb As Long
    Dim r As Long
    Dim g As Long
    Dim b As Long
    hDC = CreateDC("DISPLAY", 0

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