Hot to hide the hiden text in pdf after I turned it to Swf?

[LiuHeZeng]

Hot to hide the hiden text in pdf after I turned it to Swf?

[zhengshuxin]

(gdb) bt
#0 0x0000000000000000 in ?? ()
#1 0x00000000004d48eb in CharOutputDev::drawChar(GfxState_, double, double, double, double, double, double, unsigned int, int, unsigned int_, int) ()
#2 0x00000000004c7fbc in VectorGraphicOutputDev::drawChar(GfxState_, double, double, double, double, double, double, unsigned int, int, unsigned int_, int) ()
#3 0x0000000000492ccf in Gfx::doShowText(GString_) ()
#4 0x000000000049314f in Gfx::opShowSpaceText(Object_, int) ()
#5 0x000000000048ffcd in Gfx::execOp(Object_, Object_, int) ()
#6 0x0000000000490118 in Gfx::go(int) ()
#7 0x00000000004904a7 in Gfx::display(Object_, int) ()
#8 0x000000000048409e in Page::displaySlice(OutputDev_, double, double, int, int, int, int, int, int, int, int, Catalog_, int ()(void), void_) ()
#9 0x0000000000484267 in Page::display(OutputDev_, double, double, int, int, int, int, Catalog_, int ()(void), void_) ()
#10 0x00000000004599c0 in PDFDoc::displayPage(OutputDev_, int, double, double, int, int, int, int, int ()(void), void_) ()
#11 0x0000000000455b95 in render2(gfxpage, gfxdevice, int, int, int, int, int, int) ()
#12 0x0000000000455c7d in pdfpage_rendersection(gfxpage, _gfxdevice*, double, double, double, double, double, double) ()
#13 0x000000000040d2d7 in main ()