PyQT4: application won't start because of spaces in path Qprocess

[jaybstory]

Hello,

I'm trying to start windows media player using Qprocess (for a windows xp operating system). However, when I run my code, it won't start. I am assuming it is because of the spaces in the path name. How do I fix my code so that it will work with paths that have spaces in it? I am using pyqt4. Thank you in advance.

if sys.platform == 'win32':
                  p = QtCore.QProcess(self)
                  p.setWorkingDirectory("C:\Program Files\Windows Media Player")
                  p.start('wmplayer')

if sys.platform == 'win32':
                  p = QtCore.QProcess(self)
                  p.setWorkingDirectory("C:\Program Files\Windows Media Player")
                  p.start('wmplayer')

To copy to clipboard, switch view to plain text mode 

[bender86]

Have you tried quoting the path, or escaping the spaces? And also remember to escape slashes: \\

p.setWorkingDirectory("\"C:\\Program Files\\Windows Media Player\"")
p.setWorkingDirectory("C:\\Program\\ Files\\Windows Media Player")

p.setWorkingDirectory("\"C:\\Program Files\\Windows Media Player\"")
p.setWorkingDirectory("C:\\Program\\ Files\\Windows Media Player")

To copy to clipboard, switch view to plain text mode 

[jaybstory]

Hello,

yes, I have tried both, however my gui is still not opening the program. Do you or anyone else have any other suggestions?

[nikhilqt]

Try this,

QFile file("dummy.bat");
 
   if(!file.open(QIODevice::WriteOnly) )
	   return;
 
   file.write(QString("\"C:/Program Files/Windows Media Player/wmplayer\"").toAscii());
   file.close();
 
   p->start("dummy.bat");
 
   if( p->waitForFinished() )
   {
	   file.remove();
	   return;
   }

QFile file("dummy.bat");

   if(!file.open(QIODevice::WriteOnly) )
	   return;

   file.write(QString("\"C:/Program Files/Windows Media Player/wmplayer\"").toAscii());
   file.close();

   p->start("dummy.bat");

   if( p->waitForFinished() )
   {
	   file.remove();
	   return;
   }

To copy to clipboard, switch view to plain text mode 

[bender86]

This is weird. I managed to open a program with the complete path (still have to quote it) but not to open a program in the current working dir. Anyway, I found that if you specify a non existent working directory you will not be able to start any program, neither one in system path (I tried with cmd.exe); so the problem should be not within setWorkingDirectory().
I hope hat someone with more knowledge about PyQt could help.

p = QtCore.QProcess()
p.start("\"C:\\Program Files\\Internet Explorer\\iexplore.exe\"")
# This works.
 
...
 
p = QtCore.QProcess()
p.setWorkingDirectory("C:\\Program Files\\Internet Explorer")
p.start("cmd.exe")
# This works.
 
...
 
p = QtCore.QProcess()
p.setWorkingDirectory("C:\\I do not exist")
p.start("cmd.exe")
# This DOES NOT works.
 
...
 
p = QtCore.QProcess()
p.setWorkingDirectory("C:\\Program Files\\Internet Explorer")
p.start("iexplorer.exe")
# This DOES NOT works.

p = QtCore.QProcess()
p.start("\"C:\\Program Files\\Internet Explorer\\iexplore.exe\"")
# This works.

...

p = QtCore.QProcess()
p.setWorkingDirectory("C:\\Program Files\\Internet Explorer")
p.start("cmd.exe")
# This works.

...

p = QtCore.QProcess()
p.setWorkingDirectory("C:\\I do not exist")
p.start("cmd.exe")
# This DOES NOT works.

...

p = QtCore.QProcess()
p.setWorkingDirectory("C:\\Program Files\\Internet Explorer")
p.start("iexplorer.exe")
# This DOES NOT works.

To copy to clipboard, switch view to plain text mode 

[jaybstory]

Thanks nikhilqt & bender86. I was able to solve the problem with your guys help!