How to save?

**merry** · 12th March 2007, 10:20

Hi all

I m working on Qt3.1 for Red Hat Linux, having a listview of items,
Now what I want is when I pressed upon save button of the MainWindow than the items that are checked in the listview must be saved at the path that is selected by me using filedialog;

Thanx

**vermarajeev** · 12th March 2007, 10:31

Originally Posted by merry

Hi all

I m working on Qt3.1 for Red Hat Linux, having a listview of items,
Now what I want is when I pressed upon save button of the MainWindow than the items that are checked in the listview must be saved at the path that is selected by me using filedialog;

Thanx

Put the items in a QList, Whenever you check an item in listView, put that item in QList. In this way QList contains all the items which are checked. Now when you say 'save', open a filedialog to get the path where you want to dump the items.

But by the way what do you have for listItems.????? Is it images???????

**merry** · 12th March 2007, 10:48

Thanx 4 ur reply

Yes ListItems are directories and files which are represented by different images

Thanx

**vermarajeev** · 12th March 2007, 12:28

Originally Posted by merry

Thanx 4 ur reply

Yes ListItems are directories and files which are represented by different images

Thanx

I dont know how you want the files and directories containing images to be saved but I have written a sample program which can help you to achieve your target.

Here is the code

Qt Code:

Switch view

bool myClass::outputSelectedListItems( QList* selectedListItems, QList* totalListItem )
{
	if( ! selectedListItems->isEmpty() )
		{
		QListIterator it( totalListItem );
		QListItem* r;
		while( (r = it.current()) != 0 )
		{
			++it;		
			if( -1 != selectedRoutes->findRef( r ) )
			{
				//here you are sure what items are
                                //selected so output accordingly 
			}
		}
	        return true;
		}
	else
		{
		return false;
		}
}

bool myClass::outputSelectedListItems( QList* selectedListItems, QList* totalListItem )
{
	if( ! selectedListItems->isEmpty() )
		{
		QListIterator it( totalListItem );
		QListItem* r;
		while( (r = it.current()) != 0 )
		{
			++it;		
			if( -1 != selectedRoutes->findRef( r ) )
			{
				//here you are sure what items are
                                //selected so output accordingly 
			}
		}
	        return true;
		}
	else
		{
		return false;
		}
}

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Hope this helps

**merry** · 12th March 2007, 12:55

Thanx for the reply

I m sending U the code Which I had written :

Qt Code:

Switch view

#include <qfiledialog.h> 
#include <qlistview.h>
#include <qstring.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qstringlist.h>
#include<qmessagebox.h>
#include <qpixmap.h> 
#include <qdir.h>
#include <qstringlist.h> 
 
 
void Form1::init()
{
    listView->setColumnWidth(1,0);
    listView->header()->setResizeEnabled(false,1); 
}
 
void Form1::fileOpen()
{  
    QListViewItem* root=new QListViewItem(listView);
   m_source = QFileDialog::getExistingDirectory(
                    "/home/",
                     this,
                    "get existing directory",
                    "Choose a directory",
                    TRUE );
   root->setText(0,m_source);
   CreateDirTree(root,m_source);
   init();
}
 
void Form1::CreateDirTree(QListViewItem *item,QString path)
{ 
 
    QDir dir(path);
    QDir dir1;
 
   const QFileInfoList * dirs=dir.entryInfoList();
    {
	if(dirs)
 
        {       
	   QFileInfoListIterator it(*dirs);
	   QFileInfo * fileInfo;
	    while(fileInfo=it.current())
	    {
		++it;
 
		if(fileInfo->fileName() =="." || fileInfo->fileName() =="..")
		    ;
		else if (fileInfo->isDir())
		{ 
		     QString FilePath;		     
		     FilePath =path  +"/"+ fileInfo->fileName();
		     m_temp = new QListViewItem(item);
		     m_temp->setText(0,fileInfo->fileName());
		     m_temp->setPixmap(0,QPixmap("/root/qt/Tree/images/folderunchecked.png"));
                                 CreateDirTree(m_temp,FilePath);
		 }
 
		else
		 {
		    m_temp = new QListViewItem(item); 
	                  m_temp->setText(0,fileInfo->fileName());
	                  m_temp->setPixmap(0,QPixmap("/root/qt/Tree/images/fileunchecked.png"));
 
		} 
	        }
	 }   
 
 
   connect ( listView ,SIGNAL(pressed(QListViewItem*)),this,SLOT(reverse_images(QListViewItem*)));
       } 
 
}   
void Form1 :: reverse_images(QListViewItem* item)
   { 
    const QPixmap *pixmap;
    pixmap=item->pixmap (0);
    QImage image;
    image=pixmap->convertToImage ();
    QImage *image1=new QImage("/root/qt/Tree/images/folderunchecked.png");
    QImage *image2=new QImage("/root/qt/Tree/images/folderchecked.png");
    QImage *image3=new QImage("/root/qt/Tree/images/fileunchecked.png");
    QImage *image4=new QImage("/root/qt/Tree/images/filechecked.png");
 
    if(image1->operator==(image)==true)
    {	
	item->setPixmap(0,QPixmap("/root/qt/Tree/images/folderchecked.png"));
    }
    else if(image2->operator==(image)==true)
    {
	item->setPixmap(0,QPixmap("/root/qt/Tree/images/folderunchecked.png"));
    }	
 else if(image3->operator==(image)==true)
    {
	item->setPixmap(0,QPixmap("/root/qt/Tree/images/filechecked.png"));
    }
    else if(image4->operator==(image)==true)
    {
	item->setPixmap(0,QPixmap("/root/qt/Tree/images/fileunchecked.png"));
    }	
 
 
 }

#include <qfiledialog.h> 
#include <qlistview.h>
#include <qstring.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qstringlist.h>
#include<qmessagebox.h>
#include <qpixmap.h> 
#include <qdir.h>
#include <qstringlist.h> 


void Form1::init()
{
    listView->setColumnWidth(1,0);
    listView->header()->setResizeEnabled(false,1); 
}

void Form1::fileOpen()
{  
    QListViewItem* root=new QListViewItem(listView);
   m_source = QFileDialog::getExistingDirectory(
                    "/home/",
                     this,
                    "get existing directory",
                    "Choose a directory",
                    TRUE );
   root->setText(0,m_source);
   CreateDirTree(root,m_source);
   init();
}

void Form1::CreateDirTree(QListViewItem *item,QString path)
{ 
   
    QDir dir(path);
    QDir dir1;
  
   const QFileInfoList * dirs=dir.entryInfoList();
    {
	if(dirs)
	
        {       
	   QFileInfoListIterator it(*dirs);
	   QFileInfo * fileInfo;
	    while(fileInfo=it.current())
	    {
		++it;

		if(fileInfo->fileName() =="." || fileInfo->fileName() =="..")
		    ;
		else if (fileInfo->isDir())
		{ 
		     QString FilePath;		     
		     FilePath =path  +"/"+ fileInfo->fileName();
		     m_temp = new QListViewItem(item);
		     m_temp->setText(0,fileInfo->fileName());
		     m_temp->setPixmap(0,QPixmap("/root/qt/Tree/images/folderunchecked.png"));
                                 CreateDirTree(m_temp,FilePath);
		 }
		
		else
		 {
		    m_temp = new QListViewItem(item); 
	                  m_temp->setText(0,fileInfo->fileName());
	                  m_temp->setPixmap(0,QPixmap("/root/qt/Tree/images/fileunchecked.png"));
		 
		} 
	        }
	 }   
	
	
   connect ( listView ,SIGNAL(pressed(QListViewItem*)),this,SLOT(reverse_images(QListViewItem*)));
       } 
   
}   
void Form1 :: reverse_images(QListViewItem* item)
   { 
    const QPixmap *pixmap;
    pixmap=item->pixmap (0);
    QImage image;
    image=pixmap->convertToImage ();
    QImage *image1=new QImage("/root/qt/Tree/images/folderunchecked.png");
    QImage *image2=new QImage("/root/qt/Tree/images/folderchecked.png");
    QImage *image3=new QImage("/root/qt/Tree/images/fileunchecked.png");
    QImage *image4=new QImage("/root/qt/Tree/images/filechecked.png");
    
    if(image1->operator==(image)==true)
    {	
	item->setPixmap(0,QPixmap("/root/qt/Tree/images/folderchecked.png"));
    }
    else if(image2->operator==(image)==true)
    {
	item->setPixmap(0,QPixmap("/root/qt/Tree/images/folderunchecked.png"));
    }	
 else if(image3->operator==(image)==true)
    {
	item->setPixmap(0,QPixmap("/root/qt/Tree/images/filechecked.png"));
    }
    else if(image4->operator==(image)==true)
    {
	item->setPixmap(0,QPixmap("/root/qt/Tree/images/fileunchecked.png"));
    }	
    
	
 }

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This is the code with which I got the listview of the items(files and folders) and also can checked ,unchecked the items. Now what I want is that when I click on the save button of the filemenu ->then all the checked items mustbe saved .

thanx

**vermarajeev** · 12th March 2007, 13:39

Originally Posted by merry

Thanx for the reply

I m sending U the code Which I had written :

This is the code with which I got the listview of the items(files and folders) and also can checked ,unchecked the items. Now what I want is that when I click on the save button of the filemenu ->then all the checked items mustbe saved .

thanx

Take a QList<QListItem*> totalListItem and QList<QListItem*>selectedListItem. I assume that you know what is the total listItem displayed, put these items into totalListItem.
I'm too assuming that when you check any listItem this fuction gets called

Qt Code:

Switch view

reverse _images(QListViewItem*)

reverse _images(QListViewItem*)

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If that is the case then whenever you call reverse _images(QListViewItem*) function insert the selected item into selectedListItem. Then finally write a function called file save to save the images. Use the above defined function to save the images (defined in above post)

Hope this helps

**merry** · 13th March 2007, 06:48

Hi

Thanx for the help But I m working on Qt3.1 , in this ther is no function "QList"
Can we save this by using the concept of linked list , If yes then pls tell me how bcoz i never used linked list before.

Thanx