.net - How to make TabPages draggable? -

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i'd enable user rearrange tabpages order dragging , dropping. it'd cool enable user drag tabpages 1 tabcontrol another. both way in firefox , total commander. how achieve this?

reordering tabpages drag , drop - by ludwig b.
inspired http://dotnetrix.co.uk/tabcontrol.htm#tip7

        private void tc_mousedown(object sender, mouseeventargs e)         {             // store clicked tab             tabcontrol tc = (tabcontrol)sender;             int hover_index = this.gethovertabindex(tc);             if (hover_index >= 0) { tc.tag = tc.tabpages[hover_index]; }         }         private void tc_mouseup(object sender, mouseeventargs e)         {             // clear stored tab             tabcontrol tc = (tabcontrol)sender;             tc.tag = null;         }         private void tc_mousemove(object sender, mouseeventargs e)         {                        // mouse button down? tab clicked?             tabcontrol tc = (tabcontrol)sender;             if ((e.button != mousebuttons.left) || (tc.tag == null)) return;             tabpage clickedtab = (tabpage)tc.tag;             int clicked_index = tc.tabpages.indexof(clickedtab);              // start drag n drop             tc.dodragdrop(clickedtab, dragdropeffects.all);         }         private void tc_dragover(object sender, drageventargs e)         {             tabcontrol tc = (tabcontrol)sender;              // tab draged?             if (e.data.getdata(typeof(tabpage)) == null) return;             tabpage dragtab = (tabpage)e.data.getdata(typeof(tabpage));             int dragtab_index = tc.tabpages.indexof(dragtab);              // hover on tab?             int hovertab_index = this.gethovertabindex(tc);             if (hovertab_index < 0) { e.effect = dragdropeffects.none; return; }             tabpage hovertab = tc.tabpages[hovertab_index];             e.effect = dragdropeffects.move;              // start of drag?             if (dragtab == hovertab) return;              // swap dragtab & hovertab - avoids toggeling             rectangle dragtabrect = tc.gettabrect(dragtab_index);             rectangle hovertabrect = tc.gettabrect(hovertab_index);              if (dragtabrect.width < hovertabrect.width)             {                 point tclocation = tc.pointtoscreen(tc.location);                  if (dragtab_index < hovertab_index)                 {                     if ((e.x - tclocation.x) > ((hovertabrect.x + hovertabrect.width) - dragtabrect.width))                         this.swaptabpages(tc, dragtab, hovertab);                 }                 else if (dragtab_index > hovertab_index)                 {                     if ((e.x - tclocation.x) < (hovertabrect.x + dragtabrect.width))                         this.swaptabpages(tc, dragtab, hovertab);                 }             }             else this.swaptabpages(tc, dragtab, hovertab);              // select new pos of dragtab             tc.selectedindex = tc.tabpages.indexof(dragtab);         }          private int gethovertabindex(tabcontrol tc)         {             (int = 0; < tc.tabpages.count; i++)             {                 if (tc.gettabrect(i).contains(tc.pointtoclient(cursor.position)))                     return i;             }              return -1;         }          private void swaptabpages(tabcontrol tc, tabpage src, tabpage dst)         {             int index_src = tc.tabpages.indexof(src);             int index_dst = tc.tabpages.indexof(dst);             tc.tabpages[index_dst] = src;             tc.tabpages[index_src] = dst;             tc.refresh();         }

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