diff options
Diffstat (limited to 'doc/codesnippets/doc/src/snippets/code/src_qt3support_tools_q3deepcopy.cpp')
-rw-r--r-- | doc/codesnippets/doc/src/snippets/code/src_qt3support_tools_q3deepcopy.cpp | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/doc/codesnippets/doc/src/snippets/code/src_qt3support_tools_q3deepcopy.cpp b/doc/codesnippets/doc/src/snippets/code/src_qt3support_tools_q3deepcopy.cpp deleted file mode 100644 index 36f7491..0000000 --- a/doc/codesnippets/doc/src/snippets/code/src_qt3support_tools_q3deepcopy.cpp +++ /dev/null @@ -1,58 +0,0 @@ -//! [0] -// all 5 strings share the same data -QString s1 = "abcd"; -QString s2 = s1; -QString s3 = s2; -QString s4 = s3; -QString s5 = s2; -//! [0] - - -//! [1] -// s1, s2 and s5 share the same data, neither s3 nor s4 are shared -QString s1 = "abcd"; -QString s2 = s1; -Q3DeepCopy<QString> s3 = s2; // s3 is a deep copy of s2 -QString s4 = s3; // s4 is a deep copy of s3 -QString s5 = s2; -//! [1] - - -//! [2] -// s1, s2 and s5 share the same data, s3 and s4 share the same data -QString s1 = "abcd"; -QString s2 = s1; -QString s3 = Q3DeepCopy<QString>( s2 ); // s3 is a deep copy of s2 -QString s4 = s3; // s4 is a shallow copy of s3 -QString s5 = s2; -//! [2] - - -//! [3] -Q3DeepCopy<QString> global_string; // global string data -QMutex global_mutex; // mutex to protext global_string - -... - -void setGlobalString( const QString &str ) -{ - global_mutex.lock(); - global_string = str; // global_string is a deep copy of str - global_mutex.unlock(); -} - -... - -void MyThread::run() -{ - global_mutex.lock(); - QString str = global_string; // str is a deep copy of global_string - global_mutex.unlock(); - - // process the string data - ... - - // update global_string - setGlobalString( str ); -} -//! [3] |