#include <QtGui/qgridlayout.h>
#ifndef QGRIDLAYOUT_H
class QGridLayout: public QLayout{
   /* Some contents are skipped to improve readability */
   public: void getItemPosition(int idx, int* row, int* column, int* rowSpan, int* columnSpan);
   /* ... */
};
#endif // QGRIDLAYOUT_H