用QComboBox实现tree状结构（QComboBox居然欧setView函数）

实现的效果图如下： 

#include "mainwindow.h" 
#include <QApplication> 
#include <QTreeView> 
#include <QFileSystemModel> 
#include <QComboBox> 
#include <QDir>

int main(int argc, char *argv[]) 
{

QApplication a(argc, argv);
MainWindow w;
// 创建文件系统模型
QFileSystemModel *model = new QFileSystemModel(&w);
// 指定要监视的目录
model->setRootPath(QDir::currentPath());
QTreeView *tree = new QTreeView(&w);
tree->setModel(model);
tree->setRootIndex(model->index(QDir::currentPath()));
QComboBox *b = new QComboBox(&w);
b->resize(400, 20);
b->setView(tree);
b->setModel(model);
b->show();

w.show();

return a.exec();

} 
///////完

http://blog.csdn.net/u011915578/article/details/47783577