Hi, ALL.

I 'm tired call the added QWidget of QGridLayout.

How I can call the added QWidget of QGridLayout?

follow the source.

qDebug() is print 0.

Qt Code: 
  1. grid = new QGridLayout;
  2. 		for (j=0; j<i; j++) {
  3. 			label = new QLabel(QString("Index %1").arg(j+1));
  4. 			ed = new QLineEdit;
  5. 			grid->addWidget(label, j, 0);
  6. 			grid->addWidget(ed,    j, 1);
  7. 		}
  8. 		b = new QPushButton("Put");
  9. 		grid->addWidget(b, i, 0, 1, 2);
  10.  
  11. 		QList<QPushButton *> allPButtons = qFindChildren<QPushButton*> ( grid );  //grid->findChildren<QPushButton *>();
  12. 		QList<QLabel *> allLabel = qFindChildren<QLabel*> ( grid );          // grid->findChildren<QLabel *>();
  13. 		QList<QLineEdit *> allLine = qFindChildren<QLineEdit*> ( grid );       // grid->findChildren<QLineEdit *>();
  14.  
  15. 		qDebug() << "label count : " << allLabel.count();
  16. 		qDebug() << "QLineEdit count : " << allLine.count();
  17.  
  18. 		for (j=0; j<allPButtons.count(); j++) {
  19. 			delete allPButtons[j];
  20. 		}
  21. 		for (j=0; j<allLabel.count(); j++) {
  22. 			delete allLabel[j];
  23. 		}
  24. 		for (j=0; j<allLine.count(); j++) {
  25. 			delete allLine[j];
  26. 		}
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