RAII class around Qt::beginPropertyUpdateGroup ()/ Qt::endPropertyUpdateGroup (). 更多...
| 頭： |
#include <QScopedPropertyUpdateGroup>
|
| CMake: |
find_package(Qt6 REQUIRED COMPONENTS Core)
target_link_libraries(mytarget PRIVATE Qt6::Core)
|
| qmake: |
QT += core
|
| Since: | Qt 6.6 |
| QScopedPropertyUpdateGroup () | |
| ~QScopedPropertyUpdateGroup () |
This class calls Qt::beginPropertyUpdateGroup () in its constructor and Qt::endPropertyUpdateGroup () in its destructor, making sure the latter function is reliably called even in the presence of early returns or thrown exceptions.
注意：
Qt::endPropertyUpdateGroup
() may re-throw exceptions thrown by binding evaluations. This means your application may crash (
std::terminate()
called) if another exception is causing QScopedPropertyUpdateGroup's destructor to be called during stack unwinding. If you expect exceptions from binding evaluations, use manual
Qt::endPropertyUpdateGroup
() calls and
try
/
catch
blocks.
另請參閱 QProperty .
調用 Qt::beginPropertyUpdateGroup ().
調用 Qt::endPropertyUpdateGroup ().
