Creating a plugin to get error messages from the Message Compile window

Hi All,

I am a little stuck on a problem. So I am working on a plugin that analyzes the compile error messages. The first task I will need to do is 

to write a method that goes into the message compile window and get the compiler output of error messages. 

I am a bit stuck on how to do this. I have tried looking through the tutorial and the source code of IntelliJ CE, and this is what I have so far.  The error messages were not printed, as the errorArray is empty.  Can anyone please help me? Thanks :) 

DataContext dataContext = e.getDataContext();
Project project = CommonDataKeys.PROJECT.getData(dataContext);
// get the message container for our project

MessagesContainer messages = new MessagesContainer(project);

String [] errorArray = messages.getMessages(CompilerMessageCategory.ERROR).toArray(new String[messages.getMessageCount(CompilerMessageCategory.ERROR)]);

for(int i = 0; i < errorArray.length; ++i){
    System.out.println(errorArray[i]);
}