How to find the path of the file that launches the Qt application from explorer

QtVik

Thanks for your inputs.
But this line is causing an assertion failure "index out of range" in qlist.h line#510
qDebug() << "File path:" << args.at(1);

Qt version used is 5.5.1

Thanks

sierdzio

@QtVik said in How to find the path of the file that launches the Qt application from explorer:

@sierdzio @JNBarchan @mrjj :
But this line is causing an assertion failure "index out of range" in qlist.h line#510
qDebug() << "File path:" << args.at(1);

Try printing all args:

qDebug() << "File path:" << args;

This will show you all arguments (apart from ones consumed by Qt).

QtVik

@sierdzio
Actually I want path of the file which is invoking my application not the path of my application.exe.

Example:
I have a file named "sample.dat" in "C:\Meas folder" and Qt application in "C:\QApplication\Qapp.exe"
Now if I double click on the "sample.dat " I should be able to find this path (C:\Meas folder) through my Qt application ie. Qapp.exe

Thanks

JonB

@QtVik
@mrjj's post earlier shows you him doing this.

You should still show us qDebug() << "File path:" << args as requested by @QtVik above.

sierdzio

@QtVik said in How to find the path of the file that launches the Qt application from explorer:

Actually I want path of the file which is invoking my application not the path of my application.exe.

I know, that's what we are trying to help you with.

Actually, apart from using QCoreApplication::arguments(), you may also consider using QDir::currentPath().

JonB

@sierdzio said in How to find the path of the file that launches the Qt application from explorer:

you may also consider using QDir::currentPath().

Do you have any evidence/knowledge that launching by double-clicking from Windows Explorer sets the application's current directory to that of the file double-clicked on??

sierdzio

@JNBarchan said in How to find the path of the file that launches the Qt application from explorer:

@sierdzio said in How to find the path of the file that launches the Qt application from explorer:

you may also consider using QDir::currentPath().

Do you have any evidence/knowledge that launching by double-clicking from Windows Explorer sets the application's current directory to that of the file double-clicked on??

Nope, it's just a guess.

JonB

@QtVik
If you would just show us your output from GetCommandLine(), QCoreApplication::instance()->arguments() and/or your main()'s argv, argc we could tell you what to do....

QtVik

@JNBarchan
Following are the values for const QStringList args(QApplication::instance()->arguments()), argc ,argv:
1] argc value is 1
2] argv value is the application path .
3] args.at(0) value is also application path .
4] args.at(1) -> crash the application .

The above values are shown when I double click on the application directly.

But this is not what i want !

I want path of the file that is trying to invoke my application from explorer.
Example: from the previous post it should be "C:\Meas_folder\sample.dat"

Note: I have set my Qapp.exe as default application to open for sample.dat

Thanks

jsulm

@QtVik Please provide same information for the case you are interested in! It doesn't help at all if you double click your app and then post the results here: this is not the use case you're interested in, right?
So, open you app from explorer with a data file and post the content of QApplication::instance()->arguments() here...

"Note: I have set my Qapp.exe as default application to open for sample.dat" - then it should be enough to double click on sample.dat and post the output of QApplication::instance() here.

JonB

@jsulm
Exactly... sigh.