Changing the order of columns in QTreeView

[johnny_sparx]

Hello,

I was just wondering how to change the order of columns as they appear in QTreeView when using QDirModel. Here is a snippet of code:

// Declare the new objects.
	Directory_Model = new QDirModel;
	File_Path = new QString;
 
	// Set the file system structure parameters.
	Directory_Model->setFilter(QDir::AllDirs);
	Directory_Model->setSorting(QDir::Time);
 
	// Set the tree model (visual) parameters.
	this->QTreeView::setModel(Directory_Model);
	this->setColumnHidden(1,1);
	this->setColumnHidden(2,1);
	//this->setColumnHidden(3,1); //This crashes the widget.  Why does this happen?

// Declare the new objects.
	Directory_Model = new QDirModel;
	File_Path = new QString;

	// Set the file system structure parameters.
	Directory_Model->setFilter(QDir::AllDirs);
	Directory_Model->setSorting(QDir::Time);

	// Set the tree model (visual) parameters.
	this->QTreeView::setModel(Directory_Model);
	this->setColumnHidden(1,1);
	this->setColumnHidden(2,1);
	//this->setColumnHidden(3,1); //This crashes the widget.  Why does this happen?

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As it stands, I can see the directory tree, and then the modification time - in that order from left to right. I want this order reversed... how can this be done?

JS.

[orb9]

this->QTreeView::setModel(Directory_Model);
this->setColumnHidden(1,1);
this->setColumnHidden(2,1);
//this->setColumnHidden(3,1); //This crashes the widget. Why does this happen?

This seems to happen because the dir model has no column with index 3 (and Qt does not check itself). You should use columnCount() to check if your index is valid.

Anyway - you want change the order:

I was just wondering how to change the order of columns as they appear in QTreeView when using QDirModel. Here is a snippet of code

But you do hide a column
Maybe this works (did not test it):

this->header().moveSection( 0, 1 );

this->header().moveSection( 0, 1 );

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As I assume you are inside the constructor (or any other method of your tree class) you could also omit the this->