Can not set MFC mainframe title

Question

Hi, everyone.
I created a office style MFC application in VS2015. I need change the title of main window. I tried by SetWindowTextW, but it doesn't seams to work.
I wrote a test project that only implement a button click. It doesn't work.

void CMainFrame::OnButton2()
{
SetWindowTextW(_T("This is my title"));
}

Answer 1

Lets try a different approach. In an Office style MFC SDI application (error checking omitted) -

void CMainFrame::OnButton2()  
{  
    SetTitle(_T("This is the new title"));  
    UpdateFrameTitleForDocument(GetActiveView()->GetDocument()->GetTitle());  
}  
  

Before button click -

After button click -

Answer 2

The title is set by default from resource strings, such as IDR_MAINFRAME; try changing that.

Answer 3

Try this -

void CMainFrame::OnButton2()
{
    SetTitle(_T("This is the new title"));
    RedrawWindow(NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW | RDW_FRAME | RDW_ERASE);
}