How to add PtrSafe to make this work in 64 bit

I have this part of the code which is for 32 bit Excel and my excel is 64 bit,

I tried to make this 64 bit by adding PtrSafe at the beginining of the code. it did not work for me.

can anyone please help me?

Private Declare Function GetDesktopWindow Lib "user32" () As Long
Private Declare Function ShellExecute Lib "shell32" _
    Alias "ShellExecuteA" _
   (ByVal hwnd As Long, _
    ByVal lpOperation As String, _
    ByVal lpFile As String, _
    ByVal lpParameters As String, _
    ByVal lpDirectory As String, _
    ByVal nShowCmd As Long) As Long

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