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     |  | APIにしてみてもダメでしょうか? 
 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 SendMessage Lib "user32" Alias "SendMessageA" ( _
 ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
 Private Const WM_SETTEXT = &HC
 
 Sub test()
 Dim hExe As Long
 Dim hEnt As Long
 
 hExe = FindWindow("シテイアプリ", vbNullString)
 hEnt = FindWindowEx(hExe, 0, "Edit", vbNullString)
 Call SendMessage(hEnt, WM_SETTEXT, 0, ByVal "%( )")
 Call SendMessage(hEnt, WM_SETTEXT, 0, ByVal "R")
 End Sub
 
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