VB中如何将第三方软件按钮禁用（变成灰色）

Answer 1

给你个例子看看吧。你先打开系统的计算器程序（运行中输入calc回车），然后程序代码如下，单击窗体查看效果。
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Option Explicit

Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Private Declare Function EnableWindow Lib "user32" (ByVal hwnd As Long, ByVal fEnable As Long) As Long

Private Sub Form_Click()
EnableWindow FindWindowEx(FindWindow("SciCalc", vbNullString), 0, vbNullString, "0"), False
End Sub
单击窗体之后，计算器的0按键是不是变成灰色了？

Answer 2

按钮名.Enabled = False

Answer 3

如果第三方软件按钮不支持禁用呈灰色，那会有难度。