Extending CStringArray

Environment: VC6 SP3, NT4 SP4

One of the reasons I left C and began to use C++ was CString and even more so CStringArray. These two classes are worth all the other aggravation when going OO. I don't claim that they are perfect. There are things missing in both of those classes and I would like to share this extension of CStringArray that I have made.

Finding an string in a CStringArray

One of the things that I think are missing in CStringArray is a Find method. I find myself wanting to get a specific string out of the array and I know part, or the whole, of it. Not the position in the array. So I added this method. It is very straight forward and uses CString::Find to find the string.

Example:


 meStringArray arr;
	
 // fill the array with strings using the normal Add()
 arr.Add("This is a String");
 arr.Add("The second string");
 arr.Add("the 3:rd string");
	
 // find the third string
 int i=arr.Find("3:rd");
   	
 // i is now 2
 CString sBuf;
   	
 sBuf=arr.GetAt(i);
   	
 // sBuf has now the value of "the 3:rd string"

Array of NULL terminating strings

Some SDK-functions and some classes still using an array of NULL terminating strings. e.g. CFileDialog uses this kind of array for the filters. GetProfileString("section",NULL,"",buf,sizeof(buf)); also uses it, and there are many more. So every time you need to use this class/function you have to go back to C and do a lot of loops. Well I finally got tired of it and extended CStringArray with two methods; AddBuf() and GetBuf(). The first will take an array of NULL terminating strings and add it to the StringArray, and the second will do the reverse

Example GetBuf:


 CFileDialog dlg;
 meStringArray filter;
	
 // init filter
 filter.Add("All files");
 filter.Add("*.*");
 filter.Add("Doc files");
 filter.Add("*.doc");
 filter.Add("Text files");
 filter.Add("*.txt");
	
 // Init file dialog
 dlg.m_ofn.lpstrFilter=filter.GetBuf();
 dlg.m_ofn.lpstrInitialDir=initDir;
 dlg.m_ofn.Flags |= OFN_SHAREAWARE;
 int rc=dlg.DoModal();
 if(rc==IDOK)
 {
  m_filepath=dlg.GetPathName();
  UpdateData(FALSE);
 }

Example AddBuf:


 meStringArray arr;
 char buf[1024];
	
 // Get all printer names
 GetProfileString("devices",NULL,"",buf,sizeof(buf));	
	
 // add them to the array
 arr.AddBuf(buf);
	
 // Get the second printer name from the array
 CString sPrintName = arr.GetAt(2);

Well that's it! It's not a very large class so there is not so much to say. I hope that someone will find use for this and PLEASE let me know what you think! This is the first class I ever published so please say what you think about it, good, bad.

Downloads

Download source - 2 KB


Comments

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • There has been growing buzz about DevOps. DevOps is a methodology that unites the often separate functions of software development (Dev) and production and operations (Ops) into a single, integrated, and continuous process. DevOps is about breaking down the barriers between Dev and Ops. It leverages people, processes, and technology to stimulate collaboration and innovation across the entire software development and release process. Dev and Ops should always be part of an integrated process, but that's not …

  • In this study, conducted by Forrester Consulting and commissioned by BMC, you'll find out why 93% of US and UK IT decision-makers surveyed consider capacity management important or very important to their cloud strategy. Learn how using capacity management to manage workloads in the cloud can help Increase flexibility and continuity for your organization.

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date