CAcTcUiCatalogView::GetFirstVisibleItemIndex

int GetFirstVisibleItemIndex(
    BOOL bPartialOk = TRUE
) const;

Returns the zero-based index of the first visible item in the client area. The returned index is always less than the number of items.

If bPartialOk is true, the function returns the first fully or partially visible item. If it's false, it returns the first fully visible item.

Returns -1 if no item is visible or if there is no item in the view.

Parameters	Description
bPartialOk	Input Boolean specifying whether a partially visible item can be returned