1 files changed, 473 insertions, 0 deletions
diff --git a/doc/codesnippets/doc/src/snippets/code/doc_src_porting4.qdoc b/doc/codesnippets/doc/src/snippets/code/doc_src_porting4.qdoc
new file mode 100644
index 000000000..14fddf8e2
--- /dev/null
+++ b/doc/codesnippets/doc/src/snippets/code/doc_src_porting4.qdoc
@@ -0,0 +1,473 @@
+//! [0]
+void MyButton::paintEvent(QPaintEvent *)
+{
+    QPainter painter(this);
+    drawButton(&painter);
+}
+//! [0]
+
+
+//! [1]
+ba.at(0) = 'X';
+//! [1]
+
+
+//! [2]
+ba[0] = 'X';
+//! [2]
+
+
+//! [3]
+if (!cache.insert(key, object))
+    delete object;
+//! [3]
+
+
+//! [4]
+cache.insert(key, object);
+//! [4]
+
+
+//! [5]
+Q3Cache<QWidget> cache;
+cache.insert(widget->name(), widget);
+...
+QWidget *foo = cache.take("foo");
+if (foo)
+    foo->show();
+//! [5]
+
+
+//! [6]
+typedef QWidget *QWidgetPtr;
+QCache<QString, QWidgetPtr> cache;
+cache.insert(widget->name(), new QWidgetPtr(widget));
+...
+QWidgetPtr *ptr = cache.take("foo");
+if (ptr) {
+    QWidget *foo = *ptr;
+    delete ptr;
+    foo->show();
+}
+//! [6]
+
+
+//! [7]
+painter.setBrush(palette().brush(QPalette::Text));
+//! [7]
+
+
+//! [8]
+QByteArray ba("Hello");
+ba.size();             // returns 5 (the '\0' is not counted)
+ba.length();           // returns 5
+ba.data()[5];          // returns '\0'
+//! [8]
+
+
+//! [9]
+dict.replace(key, value);
+//! [9]
+
+
+//! [10]
+delete hash.take(key);
+hash.insert(key, value);
+//! [10]
+
+
+//! [11]
+dict.remove(key, value);
+//! [11]
+
+
+//! [12]
+delete hash.take(key);
+//! [12]
+
+
+//! [13]
+dict.clear();
+//! [13]
+
+
+//! [14]
+while (!hash.isEmpty()) {
+    T *value = *hash.begin();
+    hash.erase(hash.begin());
+    delete value;
+}
+//! [14]
+
+
+//! [15]
+qDeleteAll(hash);
+hash.clear();
+//! [15]
+
+
+//! [16]
+Q3DictIterator<QWidget> i(dict);
+while (i.current() != 0) {
+    do_something(i.currentKey(), i.current());
+    ++i;
+}
+//! [16]
+
+
+//! [17]
+QHashIterator<QString, QWidget *> i(hash);
+while (i.hasNext()) {
+    i.next();                   // must come first
+    do_something(i.key(), i.value());
+}
+//! [17]
+
+
+//! [18]
+QList<QWidget *> myWidgets = qFindChildren<QWidget *>(myParent);
+//! [18]
+
+
+//! [19]
+list.replace(index, value);
+//! [19]
+
+
+//! [20]
+delete list[index];
+list[index] = value;
+//! [20]
+
+
+//! [21]
+list.removeFirst();
+//! [21]
+
+
+//! [22]
+delete list.takeFirst();
+//! [22]
+
+
+//! [23]
+list.removeLast();
+//! [23]
+
+
+//! [24]
+delete list.takeLast();
+//! [24]
+
+
+//! [25]
+list.remove(index);
+//! [25]
+
+
+//! [26]
+delete list.takeAt(index);
+//! [26]
+
+
+//! [27]
+list.remove(value);
+//! [27]
+
+
+//! [28]
+int i = list.indexOf(value);
+if (i != -1)
+    delete list.takeAt(i);
+//! [28]
+
+
+//! [29]
+list.remove();
+//! [29]
+
+
+//! [30]
+QMutableListIterator<T *> i;
+...
+delete i.value();
+i.remove();
+//! [30]
+
+
+//! [31]
+list.clear();
+//! [31]
+
+
+//! [32]
+while (!list.isEmpty())
+    delete list.takeFirst();
+//! [32]
+
+
+//! [33]
+qDeleteAll(list);
+list.clear();
+//! [33]
+
+
+//! [34]
+QPtrList<QWidget> list;
+...
+while (list.current() != 0) {
+    do_something(list.current());
+    list.next();
+}
+//! [34]
+
+
+//! [35]
+QList<QWidget *> list;
+...
+QListIterator<QWidget *> i(list);
+while (i.hasNext())
+    do_something(i.next());
+//! [35]
+
+
+//! [36]
+QPtrList<QWidget> list;
+...
+QPtrListIterator<QWidget> i;
+while (i.current() != 0) {
+    do_something(i.current());
+    i.next();
+}
+//! [36]
+
+
+//! [37]
+QList<QWidget *> list;
+...
+QListIterator<QWidget *> i(list);
+while (i.hasNext())
+    do_something(i.next());
+//! [37]
+
+
+//! [38]
+queue.dequeue();
+//! [38]
+
+
+//! [39]
+delete queue.dequeue();
+//! [39]
+
+
+//! [40]
+queue.remove();
+//! [40]
+
+
+//! [41]
+delete queue.dequeue();
+//! [41]
+
+
+//! [42]
+queue.clear();
+//! [42]
+
+
+//! [43]
+while (!queue.isEmpty())
+    delete queue.dequeue();
+//! [43]
+
+
+//! [44]
+qDeleteAll(queue);
+queue.clear();
+//! [44]
+
+
+//! [45]
+stack.pop();
+//! [45]
+
+
+//! [46]
+delete stack.pop();
+//! [46]
+
+
+//! [47]
+stack.remove();
+//! [47]
+
+
+//! [48]
+delete stack.pop();
+//! [48]
+
+
+//! [49]
+stack.clear();
+//! [49]
+
+
+//! [50]
+while (!stack.isEmpty())
+    delete stack.pop();
+//! [50]
+
+
+//! [51]
+qDeleteAll(stack);
+stack.clear();
+//! [51]
+
+
+//! [52]
+vect.insert(i, ptr);
+//! [52]
+
+
+//! [53]
+delete vect[i];
+vect[i] = ptr;
+//! [53]
+
+
+//! [54]
+vect.remove(i);
+//! [54]
+
+
+//! [55]
+delete vect[i];
+vect[i] = 0;
+//! [55]
+
+
+//! [56]
+T *ptr = vect.take(i);
+//! [56]
+
+
+//! [57]
+T *ptr = vect[i];
+vect[i] = 0;
+//! [57]
+
+
+//! [58]
+vect.resize(n)
+//! [58]
+
+
+//! [59]
+while (n > vect.size())
+    vect.append(0);
+while (n < vect.size() {
+    T *ptr = vect.last();
+    vect.remove(vect.size() - 1);
+    delete ptr;
+}
+//! [59]
+
+
+//! [60]
+vect.clear();
+//! [60]
+
+
+//! [61]
+for (int i = 0; i < vect.size(); ++i)
+    T *ptr = vect[i];
+    vect[i] = 0;
+    delete ptr;
+}
+//! [61]
+
+
+//! [62]
+qDeleteAll(vect);
+vect.clear();
+//! [62]
+
+
+//! [63]
+struct Shared
+{
+    Shared() : count(1) {}
+    void ref() { ++count; }
+    bool deref() { return !--count; }
+    uint count;
+};
+//! [63]
+
+//! [63a]
+// Declare the object
+QSimpleRichText richText(text, font);
+
+// Set the width of the paragraph to w
+richText.setWidth(w);
+
+// Or set a resonable default size
+richText.adjustSize();
+
+// Query for its used size
+int width = richText.widthUsed();
+int height = richText.height();
+
+// Draw
+richText.draw(painter, x, y, clipRect, colorGroup);
+//! [63a]
+
+
+//! [63b]
+// Declare the object
+QTextDocument doc;
+
+// If text is rich text, use setHtml()
+doc.setHtml(text);
+
+// Otherwise, use setPlainText()
+doc.setPlainText(text);
+
+// Set the width of the paragraph of text to w
+doc.setTextWidth(w);
+
+// Query for the used size
+int width = doc.idealWidth();
+int height = doc.size().height();
+
+// Draw
+painter.translate(x, y);
+doc.drawContents(painter, clipRect);
+
+// If you have a palette/colorgroup you can draw using lower-level functions:
+QAbstractTextDocumentLayout::PaintContext context;
+context.palette = myPalette;
+doc.documentLayout()->draw(painter, context);
+//! [63b]
+
+//! [63c]
+QSlider *slider;
+slider->style()->subControlRect(CC_Slider, sliderOption, SC_SliderHandle, slider);
+//! [63c]
+
+//! [64]
+QString greeting = "Hello";
+const char *badData = greeting.toAscii().constData(); // data is invalid
+QByteArray asciiData = greeting.toAscii();
+const char *goodData = asciiData.constData();
+//! [64]
+
+
+//! [65]
+str.at(0) = 'X';
+//! [65]
+
+
+//! [66]
+str[0] = 'X';
+//! [66]