Property Manager Page

Not sure if anyone has attempted this, but many of theSolidworks commands contain controls on the property manager pagethat have a bitmap button to the left of the control (say, forexample, the 'Add Reference Geometry' function which contains acolumn of buttons on the left, each of which activates a differentcontrol to the right of it).

I can't figure out how to do this. I know how to create bitmapbuttons, but I just can't get them to appear on the same line asanother control in the property manager page.

LeeSolidworksApi macros