The TCN_SELCHANGE notification message notifies a tab control's parent window that the currently selected tab has changed. This message is sent in the form of a WM_NOTIFY message.
TCN_SELCHANGE
idTabCtl = (int) LOWORD(wParam);
lpnmhdr = (LPNMHDR) lParam;
Parameters
idTabCtl
Specifies the child window identifier of the tab control.
lpnmhdr
Pointer to an NMHDR structure. The hwndFrom member is the handle of the tab control. The idFrom member is the child window identifier of the tab control. The code member is TCN_SELCHANGE.
Return Values
No return value.
Remarks
To determine the currently selected tab, use the TabCtrl_GetCurSel macro.
See Also