<aliases>
  <alias
   match="hst"
   enabled="y"
   send_to="12"
   sequence="100"
  >
  <send>

win = "test_" .. GetPluginID ()  -- get a unique name, ensure not empty if outside plugin

WindowDelete (win)
WindowCreate (win, 0, 0, 700, 700, miniwin.pos_center_right, 0, ColourNameToRGB("white"))  -- create window
WindowShow (win,  true)  -- show it 


size = 5
offset = 6

function mouseover (flags, hotspot_id)
  SetStatus ("Over " .. hotspot_id)
end -- mouseover 

start = utils.timer ()
for x = 1, 110 do
  for y = 1, 110 do

    WindowRectOp(win, miniwin.rect_frame, x * offset, y * offset, x * offset + size, y * offset + size, 0)

    WindowAddHotspot(win, string.format ("hotspot_x%%d_y%%d", x, y),  
                   x * offset, y * offset, x * offset + size, y * offset + size,   -- rectangle
                   "mouseover", 
                   nil, -- "cancelmouseover", 
                   nil, -- "mousedown",
                   nil, -- "cancelmousedown", 
                   nil, -- "mouseup", 
                   "Click here for fun times",  -- tooltip text
                   miniwin.cursor_hand, 0)  -- hand cursor

  end
end

finish = utils.timer ()

print (string.format ("Took %%0.3f seconds to do that", finish - start))

</send>
  </alias>
</aliases>

Took 0.119 seconds to do that

  // in mouse was over hotspot when it was created, do a "mouse move" to detect this
  if (status == eOK)
    {
    for(POSITION pos=GetFirstViewPosition();pos!=NULL;)
	    {
	    CView* pView = GetNextView(pos);
	    
	    if (pView->IsKindOf(RUNTIME_CLASS(CMUSHView)))
        ((CMUSHView*)pView)->Mouse_Move_MiniWindow (this, m_lastMousePosition);
      } // end of looping through views
    } // end of added hotspot OK