The SetWindowText function changes the text of the specified window’s title bar (if it has one). If the specified window is a control, the text of the control is changed.
BOOL SetWindowText(
HWND hWnd, |
// handle of window or control |
LPCTSTR lpString |
// address of string |
); |
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
The SetWindowText function causes a WM_SETTEXT message to be sent to the specified window or control. If the window is a list box control created with the WS_CAPTION style, however, SetWindowText sets the text for the control, not for the list box entries.
The SetWindowText function does not expand tab characters (ASCII code 0x09). Tab characters are displayed as vertical bar (|) characters.