Context menu works slowly on QTableWidget

[THRESHE]

Hi everyone

I have a problem with context menu on QTableWidget. It works pretty slow. My QTableWidget's cells are painted with delegates nad I wonder if this could cause such behavior... Here is some code

void QDnDtableWidget::contextMenuEvent( QContextMenuEvent* pe)
{
	QMenu context(this);
	context.addAction("&Open Containing Folder...");
	context.addSeparator();
	context.addAction("&Download");
	context.addAction("&Stop");
	context.exec(pe->globalPos());
}

void QDnDtableWidget::contextMenuEvent( QContextMenuEvent* pe)
{
	QMenu context(this);
	context.addAction("&Open Containing Folder...");
	context.addSeparator();
	context.addAction("&Download");
	context.addAction("&Stop");
	context.exec(pe->globalPos());
}

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[wysota]

QTableWidget's cells are always painted with delegates. I suggest using a profiler to find a bottle neck. There is a good chance it's in the delegate. Convenience classes such as QTableWidget are slower than their model oriented counterparts, so if you have many items this is a possible reason of the slowdown as well.

[THRESHE]

QTableWidget's cells are always painted with delegates

What about index Widgets ?

I suggest using a profiler to find a bottle neck

What's that ?

[wysota]

What about index Widgets ?

They are separate widgets so essentially they don't count. Even then the delegate is used. Try setting a transparent index widget and you'll see for yourself.

What's that ?

http://en.wikipedia.org/wiki/Performance_analysis