dia export in tex pdf marco would lose font size setting and color

[SUMOMO <tp soulik info>]

Hi
  I have some problem with export to tex format. I want the text in the 
pdf is selected able, so I have to export tex code not as image. But I 
find once I export it, the text string in generated pdf won't have font 
setting, it looks like pretty small and all is blank. What is wrong with it?
 Also I tried Tex PSTricks, what worse, the objects are just format by 
single lines, so I think I won't use this.

My dia version is dia-1:0.97.3-4.fc23.x86_64
thank you
             randy