treemem.cpp

嵌入式LINUX下的自定义信号和槽、树型结构的内存管理、网格布局管理、动态改变语言的代码。

#include <QApplication>
#include <QtDebug>

class TreeMem : public QObject
{
public:
    TreeMem(QObject *parent = 0, const QString& name = "")
        : QObject(parent)
    {
        setObjectName(name);
        qDebug() << "Created: " << objectName();
    }
    
    ~TreeMem()
    {
        qDebug() << "Deleted: " << objectName();
    }
    
    void printName()
    {
        qDebug() << "Print Name: " << objectName();
    }
};

int main( int argc, char **argv )
{
    QApplication a( argc, argv );
    
    TreeMem top(0, "top");
    TreeMem *x = new TreeMem(&top, "x");
    TreeMem *y = new TreeMem(&top, "y");
    TreeMem *z = new TreeMem(x, "z");
    
    top.printName();
    x->printName();
    y->printName();
    z->printName();
    
    return 0;
}