The TCM_INSERTITEM message inserts a new tab in a tab control. You can send this message explicitly or by using the TabCtrl_InsertItem macro.
TCM_INSERTITEM
wParam = (WPARAM) (int) iItem; \\index of the new tab
lParam = (LPARAM) (const TC_ITEM FAR*) pitem; \\pointer to struct specifying tab attributes
Parameters
iItem
Index of the new tab.
pitem
Pointer to a TC_ITEM structure that specifies the attributes of the tab.
Return Values
Returns the index of the new tab if successful or - 1 otherwise.
See Also