Hi again,

app.cpp
Qt Code: 
  1. #include "app.hpp"
  2.  
  3. App::App(QWidget * p_parent): QMainWindow(p_parent)
  4. {
  5.     m_ui.setupUi(this);
  6.  
  7.     model = new QFileSystemModel(this);
  8.     model->setRootPath(QDir::currentPath());
  9.     proxyModel = new QSortFilterProxyModel(this);
  10.     proxyModel->setDynamicSortFilter(true);
  11.     proxyModel->setSourceModel(model);
  12.      proxyModel->mapFromSource(model->index(QDir::currentPath()));
  13.  
  14.     m_ui.listView->setModel(proxyModel);
  15.  
  16.     m_ui.listView->setRootIndex(proxyModel->mapFromSource(model->index(QDir::currentPath())));
  17.  
  18.    connect(m_ui.lineEdit, SIGNAL(textChanged(QString)), this, SLOT(filter(QString)));
  19.  
  20. }
  21.  
  22. void App::filter(QString pattern_filter)
  23. {
  24.     proxyModel->setFilterFixedString(pattern_filter);
  25. }
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app.hpp:
Qt Code: 
  1. #ifndef _HPP_APP
  2. #define _HPP_APP
  3.  
  4. #include <QFileSystemModel>
  5. #include <QMainWindow>
  6. #include <QSortFilterProxyModel>
  7. #include <QFileSystemModel>
  8. #include <QDir>
  9. #include <QTextStream>
  10. #include "ui_app.h"
  11.  
  12.  
  13. class App : public QMainWindow
  14. {
  15.     Q_OBJECT
  16.  
  17.   public:
  18.     App(QWidget * p_parent = 0);
  19.  
  20.   public slots:
  21.     void filter(QString );
  22.  
  23.   private:
  24.     Ui::MainWindow         m_ui;
  25.     QSortFilterProxyModel *proxyModel;
  26.     QFileSystemModel    *model;
  27.  
  28. };
  29.  
  30. #endif
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ui_app.h:
Qt Code: 
  1. /********************************************************************************
  2. ** Form generated from reading UI file 'app.ui'
  3. **
  4. ** Created: Sat Aug 7 21:35:40 2010
  5. **      by: Qt User Interface Compiler version 4.6.2
  6. **
  7. ** WARNING! All changes made in this file will be lost when recompiling UI file!
  8. ********************************************************************************/
  9.  
  10. #ifndef UI_APP_H
  11. #define UI_APP_H
  12.  
  13. #include <QtCore/QVariant>
  14. #include <QtGui/QAction>
  15. #include <QtGui/QApplication>
  16. #include <QtGui/QButtonGroup>
  17. #include <QtGui/QHeaderView>
  18. #include <QtGui/QLineEdit>
  19. #include <QtGui/QListView>
  20. #include <QtGui/QMainWindow>
  21. #include <QtGui/QMenuBar>
  22. #include <QtGui/QStatusBar>
  23. #include <QtGui/QToolBar>
  24. #include <QtGui/QVBoxLayout>
  25. #include <QtGui/QWidget>
  26.  
  27. QT_BEGIN_NAMESPACE
  28.  
  29. class Ui_MainWindow
  30. {
  31. public:
  32.     QWidget *centralwidget;
  33.     QVBoxLayout *verticalLayout;
  34.     QLineEdit *lineEdit;
  35.     QListView *listView;
  36.     QMenuBar *menubar;
  37.     QStatusBar *statusbar;
  38.     QToolBar *toolBar;
  39.  
  40.     void setupUi(QMainWindow *MainWindow)
  41.     {
  42.         if (MainWindow->objectName().isEmpty())
  43.             MainWindow->setObjectName(QString::fromUtf8("MainWindow"));
  44.         MainWindow->resize(686, 402);
  45.         centralwidget = new QWidget(MainWindow);
  46.         centralwidget->setObjectName(QString::fromUtf8("centralwidget"));
  47.         verticalLayout = new QVBoxLayout(centralwidget);
  48.         verticalLayout->setObjectName(QString::fromUtf8("verticalLayout"));
  49.         lineEdit = new QLineEdit(centralwidget);
  50.         lineEdit->setObjectName(QString::fromUtf8("lineEdit"));
  51.  
  52.         verticalLayout->addWidget(lineEdit);
  53.  
  54.         listView = new QListView(centralwidget);
  55.         listView->setObjectName(QString::fromUtf8("listView"));
  56.  
  57.         verticalLayout->addWidget(listView);
  58.  
  59.         MainWindow->setCentralWidget(centralwidget);
  60.         menubar = new QMenuBar(MainWindow);
  61.         menubar->setObjectName(QString::fromUtf8("menubar"));
  62.         menubar->setGeometry(QRect(0, 0, 686, 25));
  63.         MainWindow->setMenuBar(menubar);
  64.         statusbar = new QStatusBar(MainWindow);
  65.         statusbar->setObjectName(QString::fromUtf8("statusbar"));
  66.         MainWindow->setStatusBar(statusbar);
  67.         toolBar = new QToolBar(MainWindow);
  68.         toolBar->setObjectName(QString::fromUtf8("toolBar"));
  69.         MainWindow->addToolBar(Qt::TopToolBarArea, toolBar);
  70.  
  71.         retranslateUi(MainWindow);
  72.  
  73.         QMetaObject::connectSlotsByName(MainWindow);
  74.     } // setupUi
  75.  
  76.     void retranslateUi(QMainWindow *MainWindow)
  77.     {
  78.         MainWindow->setWindowTitle(QApplication::translate("MainWindow", "MainWindow", 0, QApplication::UnicodeUTF8));
  79.         toolBar->setWindowTitle(QApplication::translate("MainWindow", "toolBar", 0, QApplication::UnicodeUTF8));
  80.     } // retranslateUi
  81.  
  82. };
  83.  
  84. namespace Ui {
  85.     class MainWindow: public Ui_MainWindow {};
  86. } // namespace Ui
  87.  
  88. QT_END_NAMESPACE
  89.  
  90. #endif // UI_APP_H
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main.cpp
Qt Code: 
  1. #include <QtGui/QApplication>
  2. #include "app.hpp"
  3.  
  4.  
  5. int main(int argc, char ** argv)
  6. {
  7.     QApplication app(argc, argv);
  8.     App myapp;
  9.     myapp.show();
  10.  
  11.     return app.exec();
  12. }
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