The TB_SETTOOLTIPS message associates a tooltip control with a toolbar.
TB_SETTOOLTIPS
wParam = (WPARAM) (HWND) hwndToolTip;
lParam = 0;
Parameters
hwndToolTip
Handle to the tooltip control.
Return Values
No return value.
Remarks
Any buttons added to a toolbar before sending the TB_SETTOOLTIPS message are not registered with the tooltip control.