[Solved]-birt report column autosize when exporting to excel-eclipse

i actually managed to solve my problem , best way i've found is using excelrenderoption

renderoption options=null;
options = new excelrenderoption();  
options.setoutputformat("xls");
options.setoption(irenderoption.emitter_id,"org.eclipse.birt.report.engine.emitter.nativexls");

it will do the job for you.