Change the Tab Order of the Controls in a Dialog Box

For example, suppose you want to change the tab order of controls from A, B to B, A:

HWND hPrevA = GetNextWindow(A, GW_HWNDPREV);
HWND hNextB = GetNextWindow(B, GW_HWNDNEXT);

SetWindowPos(B, hPrevA, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE );
SetWindowPos(A, B,      0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE );
SetWindowPos(hNextB, A, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE );