Hello All!
I am building a dialog based app for symbian that teaches the user how to tie knots.
I am using a listwidget in the main dialog as a menu that passes the selected knot name to the knot view dialog that iterates through the images and displays them with a QLabel. I also display a text with a description of the selected knot. I have managed to get all that working with the code below. Because some knots like the bowline and sheet bend have a couple of different variants I used a switch function to be sure I get the correct images and description, this all works great though I wonder if this is the correct approach?
I would now like to iterate through the direction text's on a label below the displayed image.
I can make it work by building a separate file for each direction and then iterate through them the same way I am with the images and description documents but it seems cumbersome and I am thinking there must be a better way.
I can figure out how to use QString::indexOf(); to find key words in a document but is there a way to extract an entire sentence instead of just a word? That way I could just use one txt document for all the instructions...
All constructive criticism is welcomed!
If this code looks ridiculous go easy on me, I am learning C++ from a book...
Qt Code: 
  1. //recieve knot name and index of selected knot
  2. void knotViewDlg::getIndex(QString knot, int index)
  3. {
  4.     //setup d with the path to the resource images
  5.     QStringList result; //holds the image filenames
  6.     QStringList description;    //holds the txt filenames
  7.     QDir d(":/knotImages/images");
  8.     //populate result with all image names
  9.     result = d.entryList();
  10.     knot.remove(" ");   //remove spaces from string
  11.     //search result for key word
  12.     QString str1 = knot; //store selected knot name for txts
  13.     QString str;
  14.     strLst = result.filter(knot, Qt::CaseInsensitive);  //fill strLst with filtered images
  15.  
  16.     //figure out which bowline or sheet bend was selected then setup to select proper image files
  17.     if(strLst.contains("Bowline_0.gif", Qt::CaseInsensitive))
  18.     {
  19.         switch(index)
  20.         {
  21.         case 0:
  22.             {
  23.                 knot = "Bowline_";
  24.                 break;
  25.             }
  26.         case 1:
  27.             {
  28.                 knot = "Doublebowline_";
  29.                 break;
  30.             }
  31.         case 2:
  32.             {
  33.                 knot = "Bowlineonabight_";
  34.                 break;
  35.             }
  36.  
  37.         default:
  38.             break;
  39.         };
  40.         strLst = result.filter(knot);  //setup strLst with the correct image files
  41.         strLst.sort();
  42.     }
  43.  
  44.     if(strLst.contains("Sheetbend_0.gif", Qt::CaseInsensitive) || (description.contains("DoubleSheetbend_0.gif", Qt::CaseInsensitive)))
  45.     {
  46.         switch(index)
  47.         {
  48.         case 3:
  49.             {
  50.                 knot = "Sheetbend_";
  51.                 break;
  52.             }
  53.         case 4:
  54.             {
  55.                 knot = "Doublesheetbend_";
  56.                 break;
  57.             }
  58.         default:
  59.             break;
  60.         };
  61.         strLst = result.filter(knot);
  62.         strLst.sort();
  63.     }
  64.     strLst.sort();
  65.     //set first image before calling timer
  66.     str = strLst.at(0);
  67.     ui->label->setPixmap(QPixmap(QString::fromUtf8(
  68.             ":/knotImages/images/").append(str)));
  69.    //set first instruction here?
  70.  
  71.     //setup description page
  72.     d = (":/images/docs/texts");
  73.     result = d.entryList();
  74.     description = (result.filter(str1, Qt::CaseInsensitive));
  75.     //figure out which bowline or sheet bend was selected then setup to select proper text file
  76.     if(description.contains("Bowline.txt", Qt::CaseInsensitive))
  77.     {
  78.         switch(index)
  79.         {
  80.         case 0:
  81.             {
  82.                 description.first() = "Bowline.txt";
  83.                 break;
  84.             }
  85.         case 1:
  86.             {
  87.                 description.first() = "DoubleBowline.txt";
  88.                 break;
  89.             }
  90.         case 2:
  91.             {
  92.                 description.first() = "Bowlineonabight.txt";
  93.                 break;
  94.             }
  95.         default:
  96.             break;
  97.         };
  98.     }
  99.     if(description.contains("Sheetbend.txt", Qt::CaseInsensitive) || (description.contains("DoubleSheetbend.txt", Qt::CaseInsensitive)))
  100.     {
  101.         switch(index)
  102.         {
  103.         case 3:
  104.             {
  105.                 description.first() = "SheetBend.txt";
  106.                 break;
  107.             }
  108.         case 4:
  109.             {
  110.                 description.first() = "DoubleSheetbend.txt";
  111.                 break;
  112.             }
  113.         default:
  114.             break;
  115.         };
  116.     }
  117.  
  118.     //open appropriate file for descriptions
  119.     str = (QString::fromUtf8(":/images/docs/texts/").append(description.at(0)));
  120.     QFile inputFile(str);
  121.     inputFile.open(QIODevice::ReadOnly);
  122.     QTextStream in(&inputFile);
  123.     QString line = in.readAll();
  124.     inputFile.close();
  125.     ui->textEdit->append(line);
  126.     ui->tabWidget->setCurrentIndex(1);
  127.     ui->textEdit->setFocus();
  128.  
  129.     //open appropriate instructions here?
  130. }
  131. void knotViewDlg::changeImage()
  132. {
  133.     QString str = strLst.at(counter);
  134.     ui->label->setPixmap(QPixmap(QString::fromUtf8(
  135.             ":/knotImages/images/").append(str)));
  136.     counter++;
  137.     if(counter >= (strLst.count()))
  138.     {
  139.         counter = 0;
  140.     }
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All constructive comments and help much appreciated!

Cheers,
Jon