class Serial:: for windows

i know c object oriented c++ not strong side yet.  
i'm trying use class serial page

arduino.cc/playground/interfacing/cppwindows

i can

code: [select]


...
serial::serial((char *)"com6");


but can't instantiate new object writedata dynamic member of serial class..

code: [select]


serial *serauto;
serial *serdynamic = new serial;
serial::serial((char *)"com6"); // here ok.

   if(serdynamic->writedata("7",1)) // not ok!
   {
       //alles ok
   }

error: ...mainwindow.cpp:70: error: no matching function call 'serial::serial()'

how must object instantiated can used send character??

there no working example uses serialclass...
let's make 1 now?

c++ serial port class windows, here working link
http://www.arduino.cc/playground/interfacing/cppwindows

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