ummm...cursor not changing...

[nupul]

I have a few buttons in my app, which when clicked, launch a particular application, using QProcess.
Now what I want to do is this, till the external application hasn't started, I wish the Hourglass cursor to
be displayed. Once the application starts, reset the cursor to the original state. I tried several combinations
to the following code snippet, but can't seem to figure it out though...help

QProcess launch_prog;
 
launch_prog.startDetached(path);
 
        if(launch_prog.waitForStarted())
         setCursor(Qt::WaitCursor);                     //my widget inherits QWidget
 
        if(launch_prog.state()==QProcess::Running);
         unsetCursor();

QProcess launch_prog;

launch_prog.startDetached(path);

        if(launch_prog.waitForStarted())
         setCursor(Qt::WaitCursor);                     //my widget inherits QWidget

        if(launch_prog.state()==QProcess::Running);
         unsetCursor();

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Thanks

Nupul

[jpn]

QProcess::startDetached() is a static method. It returns true on success and false otherwise, and that's about all you will know about the launched process.

Instantiate a QProcess and handle it by non-static members instead, if you want to know more about it's state or so.

[Chicken Blood Machine]

QApplication::setOverrideCursor(Qt::BusyCursor);
QProcess launch_prog;
launch_prog.start(path);
QApplication::restoreOverrideCursor();

QApplication::setOverrideCursor(Qt::BusyCursor);
QProcess launch_prog;
launch_prog.start(path);
QApplication::restoreOverrideCursor();

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[nupul]

already done that...in fact i get a warning msg displaying object destroyed while process is still running...and thus chose startDetached(...)

Maybe you could stick a few lines of code (or pseudo )to explain what i should do!

Thanks

Nupul

[nupul]

CBM, I even did as you said...actually I saw your reply later and edited my post

This is what I did

QApplication::setOverrideCursor(Qt::WaitCursor);
                locate.waitForFinished(-1);
 QApplication::restoreOverrideCursor();

QApplication::setOverrideCursor(Qt::WaitCursor);
                locate.waitForFinished(-1);
 QApplication::restoreOverrideCursor();

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And this is the error I got:

mylayout.cpp: In member function ‘void MyMenuLayout::search()’:
mylayout.cpp:488: error: incomplete type ‘QApplication’ used in nested name specifier
mylayout.cpp:490: error: incomplete type ‘QApplication’ used in nested name specifier
make: *** [mylayout.o] Error 1

infact I don't even know what it means

I went through the docs, and the exact same thing is done in one of the examples: A text editor.

What is wrong?

Thanks

Nupul

PS: i am executing the above on linux....if that's got something to do with this

[jpn]

#include <QApplication>

#include <QApplication>

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[nupul]

That was the first thing to cross my mind...did that too...but it still wouldn't work!!

[Chicken Blood Machine]

already done that...in fact i get a warning msg displaying object destroyed while process is still running...and thus chose startDetached(...)

Maybe you could stick a few lines of code (or pseudo )to explain what i should do!

Thanks

Nupul

Oops, that should be:

QApplication::setOverrideCursor(Qt::BusyCursor);
QProcess* launch_prog = new QProcess(this);
connect(launch_prog, 
    SIGNAL(finished(int, QProcess::ExitStatus) ), 
    launch_prog, 
    SLOT(deleteLater()));
launch_prog->start(path);
QApplication::restoreOverrideCursor();

QApplication::setOverrideCursor(Qt::BusyCursor);
QProcess* launch_prog = new QProcess(this);
connect(launch_prog, 
    SIGNAL(finished(int, QProcess::ExitStatus) ), 
    launch_prog, 
    SLOT(deleteLater()));
launch_prog->start(path);
QApplication::restoreOverrideCursor();

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