populate ofxSimpleGuiToo ComboBox with files

gistfile1.cpp

int fileID = 0;
vector<string> fileNames;
string fileExtension = "pex";
//
	
ofDirectory dir = ofToDataPath("", true);
dir.listDir();
vector<ofFile> files = dir.getFiles();
	
for(int i=0; i<files.size(); i++)
{
  if (files[i].getExtension() == fileExtension)
  {
    fileNames.push_back(files[i].getFileName());
  }
}
gui.addComboBox("SOURCE", fileID, fileNames.size(),  &fileNames[0]);