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How can I make function() a member of my TestDlg class?????

Doesnt work, GetDlgItem() asks for Window Hande (doesn't accept 1 Parameter)! How can I get this? WoodStock

Hello! I am new to MFC. I want to change an Edit Box from a function! The situation is the following (simplified): int function(); //Prototype void TestDlg::OnGo() { SetDlgItemText(IDC_Output, "From OnGo!!!"); //Works fine function(); // Call my function } int function() { SetDlgItemText(IDC_Output, "From funtion()!!"); // ERROR } So, the output from the function does not work. I know, I have to append something, but what?????