[dwm] toggling maximum height

Hi all,

I'm trying to implement a toggling of a vertical or horizontal
maximisation and I expected resize() to take maxw or maxh as granted
absolut possible width or height. If I call resize like below it
resizes the window to one line, which is not what I wanted to do.

Could somebody explain me what I'm doing wrong? ;-)

togglemaxvert(const Arg *arg) {
  sel->isfloating = !sel-> isfloating || sel->isfixed;
  if(sel->isfloating)
    resize(sel, sel->x, sel->y, sel->w, sel->maxh, True);
  arrange();
}

regards,
Frederic 'jchome' Jaeckel