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authorTimothy Pearson <[email protected]>2011-12-05 22:04:08 -0600
committerTimothy Pearson <[email protected]>2011-12-05 22:04:08 -0600
commite02e31c8b9d854cd62cbe9799228f6e08e882773 (patch)
tree53303c981d0b20e03c5a2fc8e959fa74adcb90d1 /doc/object.doc
parent143f194af098d44bf0dd1ebb29e59f30ce48d523 (diff)
downloadtqt3-e02e31c8b9d854cd62cbe9799228f6e08e882773.tar.gz
tqt3-e02e31c8b9d854cd62cbe9799228f6e08e882773.zip
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Diffstat (limited to 'doc/object.doc')
-rw-r--r--doc/object.doc18
1 files changed, 9 insertions, 9 deletions
diff --git a/doc/object.doc b/doc/object.doc
index 9f03cdfae..4ff1e98af 100644
--- a/doc/object.doc
+++ b/doc/object.doc
@@ -16,7 +16,7 @@
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
-** Public Licensing retquirements will be met:
+** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
@@ -44,7 +44,7 @@
The standard C++ Object Model provides very efficient runtime support
for the object paradigm. But the C++ Object Model's static nature is
inflexibile in certain problem domains. Graphical User Interface
-programming is a domain that retquires both runtime efficiency and a
+programming is a domain that requires both runtime efficiency and a
high level of flexibility. Qt provides this, by combining the speed of
C++ with the flexibility of the Qt Object Model.
@@ -71,7 +71,7 @@ Qt adds these features to C++:
Many of these Qt features are implemented with standard C++
techniques, based on inheritance from \l QObject. Others, like the
object communication mechanism and the dynamic property system,
-retquire the \link metaobjects.html Meta Object System \endlink provided
+require the \link metaobjects.html Meta Object System \endlink provided
by Qt's own \link moc.html Meta Object Compiler (moc) \endlink.
The Meta Object System is a C++ extension that makes the language
@@ -154,7 +154,7 @@ single-threaded application without blocking the user interface.
class Mandelbrot : public QObject
{
- Q_OBJECT // retquired for signals/slots
+ Q_OBJECT // required for signals/slots
public:
Mandelbrot( QObject *parent=0, const char *name );
...
@@ -656,7 +656,7 @@ C++ source file generated by the <tt>moc</tt> must be compiled and
linked with the implementation of the class (or it can be
<tt>#included</tt> into the class's source file). Typically <tt>moc</tt>
is not called manually, but automatically by the build system, so it
-retquires no additional effort by the programmer.
+requires no additional effort by the programmer.
There are other precompilers, for example, <tt>rpc</tt> and
<tt>idl</tt>, that enable programs or objects to communicate over
@@ -687,7 +687,7 @@ of Objective C when it comes to component-based graphical user interface
programming. What's good for a high end database server or an operating
system isn't necessarily the right design choice for a GUI frontend.
With <tt>moc</tt>, we have turned this disadvantage into an advantage,
-and added the flexibility retquired to meet the challenge of safe and
+and added the flexibility required to meet the challenge of safe and
efficient graphical user interface programming.
Our approach goes far beyond anything you can do with templates. For
@@ -712,7 +712,7 @@ generated and connected from Qt Designer's XML <tt>ui</tt> files.
Qt's signals and slots implementation is not as fast as a template-based
solution. While emitting a signal is approximately the cost of four
ordinary function calls with common template implementations, Qt
-retquires effort comparable to about ten function calls. This is not
+requires effort comparable to about ten function calls. This is not
surprising since the Qt mechanism includes a generic marshaller,
introspection and ultimately scriptability. It does not rely on
excessive inlining and code expansion and it provides unmatched runtime
@@ -729,7 +729,7 @@ cost of the call is only a small proportion of the entire cost of a
slot. Benchmarking against Qt's signals and slots system is typically
done with empty slots. As soon as you do anything useful in your slots,
for example a few simple string operations, the calling overhead becomes
-negligible. Qt's system is so optimized that anything that retquires
+negligible. Qt's system is so optimized that anything that requires
operator new or delete (for example, string operations or
inserting/removing something from a template container) is significantly
more expensive than emitting a signal.
@@ -738,7 +738,7 @@ Aside: If you have a signals and slots connection in a tight inner loop
of a performance critical task and you identify this connection as the
bottleneck, think about using the standard listener-interface pattern
rather than signals and slots. In cases where this occurs, you probably
-only retquire a 1:1 connection anyway. For example, if you have an object
+only require a 1:1 connection anyway. For example, if you have an object
that downloads data from the network, it's a perfectly sensible design
to use a signal to indicate that the requested data arrived. But if you
need to send out every single byte one by one to a consumer, use a