Try this

  <inputtext id="inp2" bgcolor="#cccccc"
             y="50"
             font="monospace"
             width="200" ></inputtext>

Note that when you type into the text field, the text is not in the monospace font

or this

  <inputtext id="inp2" bgcolor="#cccccc"
             y="50" fontsize="30"
             font="monospace"
             width="200" ></inputtext>

The font is not in the given fontsize or typeface

Note that adding an explicit height attribute will make the input field use the correct font.

Also, if you have some initial text specified, it shows up in the correct font, but
typing into the input field displays in the wrong (default) font.

  <inputtext id="inp" bgcolor="#cccccc"
             font="monospace"
             width="200" >This is monospace font 2+2 </inputtext>

This is in SWF7/8