Downloading a file and saving in a path

[StarRocks]

Dear d_stranz,


Thanks for the reply........Actually the error is now from the other project its from the same and renamed the class name as you said me to but helpless no change in the code...........I want to call the download of xml file project in the Generatingxml project because i don't want to make the code long and confused so thought to have all in a single project.........Hope you got my point and understood what i really wanted to frame the sentence in and it says the slot/signal not found but not providing me the name of the slot/signal.........Any solution would be appreciable.........Thanks in Advance......

[StarRocks]

Dear d_stranz,

Please find the attachment of my updated program on generating and downloading........What my problem here is it downloading before i generate any file......It means downloading is done first.........The error that im getting here is "Object::connect: No such slot MainWindow::downloadProgress(qint64,qint64)
Object::connect: (receiver name: 'MainWindow')" ............Please have a look at the code and let me know with a solution.......Any solution would be appreciable.....Thanks in Advance........


Regards,

[Santosh Reddy]

You are trying to create two MainWindows, both will run simultaneously, if you want the 2nd MainWindow to wait until first one is done then

#include <QtGui/QApplication>
#include "mainwindow.h"
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
 
    w.show();
    a.exec();//<<<<<<<<<<<<<<<<<<<<
 
 
    MainWindow dl;
    dl.setTarget("/mnt/jffs2/Synch.xml");
 
    dl.download();
 
    return 0;//<<<<<<<<<<<<<<<<<<<<
}

#include <QtGui/QApplication>
#include "mainwindow.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;

    w.show();
    a.exec();//<<<<<<<<<<<<<<<<<<<<


    MainWindow dl;
    dl.setTarget("/mnt/jffs2/Synch.xml");

    dl.download();

    return 0;//<<<<<<<<<<<<<<<<<<<<
}

To copy to clipboard, switch view to plain text mode 

also the error you mentioned (altually warnning) is because you commented out that solt in the code

[Lesiok]

Dear StarRocks - some independence please. Don't You see in mainwindow.h that line with definiton of downloadProgress slot is commented ?

[StarRocks]

Dear Santosh,


Thanks for the reply.........Actually i dont need that slot to be used so commented it.....As u have given the main method i have done the same but what i need is when the generation of Xml is done right after that i want it to get downloaded in the path where i have mentioned ....And download should be done after the file is generated.........Hope you got me.....Thanks in Advance.........Any solution would be appreciable........



Regards,

[Santosh Reddy]

Creating two instance of MainWindow will not help you.

You need to have two slots connected to QPushButton click signal
1. First slot will save the file
2. Second slot will download it form there to new location

Signal & Slot connection (connect() call) order is important here.

[StarRocks]

Dear Santosh,


Thanks for the reply.........As you have seen the code i am pretty confused how to have the slots there .......So can you help me out in having the slots set there hope you understood my point.............As its not allowing me to have couple of slots as used by me.........Thanks in advance.........Any solution would be appreciable.....



Regards,

[Santosh Reddy]

Check this

[StarRocks]

Dear Santosh,

Thanks for the reply........The coding that you have given is working perfectly thankyou for the code........Thanks in Advance.........


Regards,

[d_stranz]

@Santosh: If I can offer one nit-pick criticism - the signal / slot connections in the MainWindow constructor rely on some Qt behaviour which may not be obvious to the OP, namely that signals are handled in the order that the connections are made.

I would have defined a signal for the MainWindow: createXMLDone() or something like that, and connected that to the slot that creates the file copy. That would also allow some degree of control - as the code is now implemented, the copy is attempted no matter what happens in the createXMLFile() method, even when it fails and there is no xml file to copy.

Otherwise, your patience in dealing with this poster is amazing.

[StarRocks]

Dear d_stranz,


Thanks for the comments but the way we have coded looks fine i guess.......And i have coded many things in the program but was lacking with somethings so Santosh helped me out in clearing those am i right santosh.......Hope you help me out in those critical solving issues............Thanks in Advance..........
Any comments would be appreciable....


Regards,

[Santosh Reddy]

@Santosh: If I can offer one nit-pick criticism - the signal / slot connections in the MainWindow constructor rely on some Qt behaviour which may not be obvious to the OP, namely that signals are handled in the order that the connections are made.

I agree.

I would have defined a signal for the MainWindow: createXMLDone() or something like that, and connected that to the slot that creates the file copy. That would also allow some degree of control - as the code is now implemented, the copy is attempted no matter what happens in the createXMLFile() method, even when it fails and there is no xml file to copy.

This is a better solution, and I would also prefer this way.