QProcess use dos comand

[damonlin]

Hi everyone,

Because QT's rmdir can't really remove the directory which is not empty ,

therefore, i choose to use QPrcess to execute dos coommand "RD" on windows,

however it can't work ...

I type in prmot windows and it works....

Should the environent set worng ??

Here is my code:

void D_DirView::removeFile(void)
{
if( m_Process )
delete m_Process;

m_Process = new QProcess(this);
QStringList arguments << "/Q/S" << "D:\\tmp";
m_Process->start( "RD", arguments )
}

[JimDaniel]

I don't know, but you could also write a recursive function to empty the dir, then delete it. I did this once:

void ResoModule::deleteSoundDir(const QString & dir)
{
	QDir sound_dir(dir);
 
	//First delete any files in the current directory
	QFileInfoList files = sound_dir.entryInfoList(QDir::NoDotAndDotDot | QDir::Files);
	for(int file = 0; file < files.count(); file++)
	{
		sound_dir.remove(files.at(file).fileName());
	}
 
	//Now recursively delete any child directories
	QFileInfoList dirs = sound_dir.entryInfoList(QDir::NoDotAndDotDot | QDir::Dirs);
	for(int dir = 0; dir < dirs.count(); dir++)
	{
		deleteSoundDir(dirs.at(dir).absoluteFilePath());
	}
 
	//Finally, remove empty parent directory
	sound_dir.rmdir(sound_dir.path());
}

void ResoModule::deleteSoundDir(const QString & dir)
{
	QDir sound_dir(dir);

	//First delete any files in the current directory
	QFileInfoList files = sound_dir.entryInfoList(QDir::NoDotAndDotDot | QDir::Files);
	for(int file = 0; file < files.count(); file++)
	{
		sound_dir.remove(files.at(file).fileName());
	}

	//Now recursively delete any child directories
	QFileInfoList dirs = sound_dir.entryInfoList(QDir::NoDotAndDotDot | QDir::Dirs);
	for(int dir = 0; dir < dirs.count(); dir++)
	{
		deleteSoundDir(dirs.at(dir).absoluteFilePath());
	}

	//Finally, remove empty parent directory
	sound_dir.rmdir(sound_dir.path());
}

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[wysota]

Hi everyone,

Because QT's rmdir can't really remove the directory which is not empty ,

therefore, i choose to use QPrcess to execute dos coommand "RD" on windows,

Baaaaaad idea, because of many reasons. Do it as suggested in the other post.

however it can't work ...

I type in prmot windows and it works....

Should the environent set worng ??

There is no such thing as "dos command". It's a "command.com command" thus you need to invoke it through command.com instead of calling it directly. There is no binary rd.com on your system, right? So QProcess can't find it.

[chaoticbob]

If you really want to do it the way that you have it - you can probably do via /C for cmd.exe ( cmd /c "rd /q /s whatever" ) and spawn that instead of trying to spawn the nonexistent RD. Putting a /? after cmd in a command prompt will show you all the options available.

But be warned, as wysota mentioned. It's not a good idea.

[damonlin]

Thank you so much ~~

I'll implement just like what JimDaniel offer ~~