diff options
Diffstat (limited to 'doc/src/porting/porting4.qdoc')
| -rw-r--r-- | doc/src/porting/porting4.qdoc | 140 |
1 files changed, 70 insertions, 70 deletions
diff --git a/doc/src/porting/porting4.qdoc b/doc/src/porting/porting4.qdoc index a3960c3c85..1c11a025e6 100644 --- a/doc/src/porting/porting4.qdoc +++ b/doc/src/porting/porting4.qdoc @@ -760,7 +760,7 @@ function. The solution is to reimplement QWidget::paintEvent() in your QAbstractButton subclass as follows: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 0 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 0 \table \header \o Q3Button function \o QAbstractButton equivalent @@ -860,11 +860,11 @@ \o QMemArray::at() returned a non-const reference, whereas the new QByteArray::at() returns a const value. Code like - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 1 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 1 will no longer compile. Instead, use QByteArray::operator[]: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 2 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 2 \o The QMemArray::contains(char) function has been renamed QByteArray::count(char). In addition, there now exists a @@ -935,11 +935,11 @@ function returns \c void and either adds it to the cache or deletes it right away. Old code like - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 3 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 3 becomes - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 4 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 4 \o The new QCache class \e always takes ownership of the items it stores (i.e. auto-delete is always on). If you use Q3Cache @@ -950,11 +950,11 @@ pointers, not the objects that the pointers refer to. For example, - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 5 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 5 becomes - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 6 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 6 An alternative is to stick to using Q3Cache. \endlist @@ -1051,7 +1051,7 @@ you can simply replace colorGroup() with palette(): - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 7 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 7 \section1 QColorDrag @@ -1089,7 +1089,7 @@ '\\0' issue is handled by having QByteArray allocate one extra byte that it always sets to '\\0'. For example: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 8 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 8 The Qt3Support library contains a class called Q3CString that inherits from the new QByteArray class and that @@ -1416,26 +1416,26 @@ \header \o Q3Dict idiom \o QMultiHash idiom \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 9 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 9 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 10 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 10 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 11 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 11 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 12 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 12 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 13 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 13 (also called from Q3Dict's destructor) \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 14 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 14 In 99% of cases, the following idiom also works: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 15 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 15 However, it may lead to crashes if \c hash is referenced from the value type's destructor, because \c hash contains @@ -1471,11 +1471,11 @@ Be aware that QHashIterator has a different way of iterating than Q3DictIterator. A typical loop with Q3DictIterator looks like this: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 16 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 16 Here's the equivalent QHashIterator loop: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 17 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 17 See \l{Java-style iterators} for details. @@ -2377,7 +2377,7 @@ Use QObject::findChildren() instead of QObject::queryList(). For example: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 18 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 18 QObject::killTimers() has been removed because it was unsafe to use in subclass. (A subclass normally doesn't know whether the @@ -2712,48 +2712,48 @@ \header \o QPtrList idiom \o QList idiom \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 19 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 19 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 20 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 20 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 21 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 21 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 22 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 22 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 23 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 23 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 24 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 24 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 25 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 25 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 26 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 26 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 27 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 27 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 28 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 28 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 29 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 29 (removes the current item) \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 30 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 30 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 31 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 31 (also called from QPtrList's destructor) \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 32 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 32 In 99% of cases, the following idiom also works: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 33 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 33 However, it may lead to crashes if \c list is referenced from the value type's destructor, because \c list contains @@ -2790,11 +2790,11 @@ Be aware that QListIterator has a different way of iterating than QPtrList. A typical loop with QPtrList looks like this: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 34 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 34 Here's the equivalent QListIterator loop: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 35 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 35 Finally, QPtrListIterator<T> must also be ported. There are no fewer than four iterator classes that can be used as a @@ -2821,11 +2821,11 @@ iterating than QPtrList. A typical loop with QPtrList looks like this: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 36 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 36 Here's the equivalent QListIterator loop: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 37 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 37 Finally, QPtrListStdIterator<T> must also be ported. This is easy, because QList also provides STL-style iterators @@ -2864,26 +2864,26 @@ \header \o QPtrQueue idiom \o QQueue idiom \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 38 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 38 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 39 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 39 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 40 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 40 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 41 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 41 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 42 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 42 (also called from QPtrQueue's destructor) \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 43 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 43 In 99% of cases, the following idiom also works: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 44 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 44 However, it may lead to crashes if \c queue is referenced from the value type's destructor, because \c queue contains @@ -2923,26 +2923,26 @@ \header \o QPtrStack idiom \o QStack idiom \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 45 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 45 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 46 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 46 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 47 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 47 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 48 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 48 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 49 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 49 (also called from QPtrStack's destructor) \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 50 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 50 In 99% of cases, the following idiom also works: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 51 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 51 However, it may lead to crashes if \c stack is referenced from the value type's destructor, because \c stack contains @@ -3024,36 +3024,36 @@ \header \o QPtrVector idiom \o QVector idiom \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 52 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 52 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 53 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 53 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 54 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 54 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 55 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 55 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 56 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 56 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 57 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 57 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 58 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 58 \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 59 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 59 \row \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 60 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 60 (also called from QPtrVector's destructor) \o - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 61 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 61 In 99% of cases, the following idiom also works: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 62 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 62 However, it may lead to crashes if \c vect is referenced from the value type's destructor, because \c vect contains @@ -3193,7 +3193,7 @@ An easy way of porting to Qt 4 is to include this class into your project and to use it instead of \c QShared: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 63 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 63 If possible, we recommend that you use QSharedData and QSharedDataPointer instead. They provide thread-safe reference @@ -3217,11 +3217,11 @@ Previously, you would do the following with Q3SimpleRichText: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 63a + \snippet doc/src/snippets/code/doc_src_porting4.cpp 63a However, with QTextDocument, you use the following code instead: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 63b + \snippet doc/src/snippets/code/doc_src_porting4.cpp 63b See \l{Rich Text Processing} for an overview of the Qt 4 rich text classes. @@ -3233,7 +3233,7 @@ The slider's rect can now be retrieved using the code snippet below: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 63c + \snippet doc/src/snippets/code/doc_src_porting4.cpp 63c In addition, the direction of a vertical QSlider has changed, i.e. the bottom is now the minimum, and the top the maximum. You @@ -3454,7 +3454,7 @@ byte array; you should avoid taking a pointer to the data contained in temporary objects. - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 64 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 64 In the above example, the \c goodData pointer is valid for the lifetime of the \c asciiData byte array. If you need to keep a copy of the data @@ -3464,11 +3464,11 @@ \o QString::at() returned a non-const reference, whereas the new QString::at() returns a const value. Code like - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 65 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 65 will no longer compile. Instead, use QString::operator[]: - \snippet doc/src/snippets/code/doc_src_porting4.qdoc 66 + \snippet doc/src/snippets/code/doc_src_porting4.cpp 66 \o The QString::contains(\e x) function (where \e x is a character or a string) has been renamed QString::count(\e x). |