c0637c0298
One of the good features of the new connection style is that implicit conversion is performed for the connection arguments. However, this is also a bad feature when it comes to the old C remnants in the C++ language: for instance, doubles implicitly convert to ints, possibly losing precision (and GCC/Clang do not even warn about those under -Wall, only MSVC does) or even triggering undefined behavior. For this reason, when using braced initialization, C++11 disables narrowing conversions or floating/integral conversions. Use this feature when checking the arguments of a PMF-style signal/slot connection. Technically this makes the program ill-formed, however GCC still accepts it (but at least warns under -Wall). Hence, add a way to disable these implicit conversions. This is a opt-in and guarded by a macro, as it's a source incompatible change. [ChangeLog][QtCore][QObject] The QT_NO_NARROWING_CONVERSIONS_IN_CONNECT macro has been added. When using the new connection syntax (PMF-based) this macro makes it illegal to narrow the arguments carried by the signal, and/or to perform floating point to integral implicit conversions on them. When the macro is defined, depending on your compiler a QObject::connect() statement triggering such conversions will now fail to compile. Change-Id: Ie17eb3e66ce0cd780138e60d8bb7da815a4ada83 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> |
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| .. | ||
| auto | ||
| baselineserver | ||
| benchmarks | ||
| global | ||
| manual | ||
| shared | ||
| README | ||
| tests.pro | ||
This directory contains autotests and benchmarks based on Qt Test. In order
to run the autotests reliably, you need to configure a desktop to match the
test environment that these tests are written for.
Linux X11:
* The user must be logged in to an active desktop; you can't run the
autotests without a valid DISPLAY that allows X11 connections.
* The tests are run against a KDE3 or KDE4 desktop.
* Window manager uses "click to focus", and not "focus follows mouse". Many
tests move the mouse cursor around and expect this to not affect focus
and activation.
* Disable "click to activate", i.e., when a window is opened, the window
manager should automatically activate it (give it input focus) and not
wait for the user to click the window.