BOOL SetWindowText( LPCTSTR lpszString );
See SetWindowText in the Win32 SDK.
Remarks
Changes the window's text.
Example
//The following example attaches an HWND to the CWindow object and
//calls CWindow::SetWindowText() to set the new title-text of the
//window
CWindow myWindow;
myWindow.Attach(hWndFoo);
myWindow.SetWindowText(_T("Hello ATL"));
CWindow Overview | Class Members
See Also CWindow::GetWindowText