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QWhatsThis::add(pWidget,tr("<b>Überschrift</b><p>Dies ist eine Kontexthilfe</p>"))

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QPopupMenu * contextMenu = new QPopupMenu( this );
QLabel *caption = new QLabel( "<font color=darkblue><u><b>" "Context Menu</b></u></font>", this );
caption->setAlignment( Qt::AlignCenter );
contextMenu->insertItem( caption );
contextMenu->insertItem( "&Save", this, SLOT(save()), CTRL+Key_S );
contextMenu->exec( QCursor::pos() );

Code: Alles auswählen

error C2027: Verwendung des undefinierten Typs "QPopupMenu"

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void main_window::contextMenuEvent( QContextMenuEvent *event)
{
	QPopupMenu* context_menu = new QPopupMenu( this );

	context_menu->addAction( m_reset_view_action );
	context_menu->addTo( m_gl_widget );

	context_menu->exec(event->globalPos());
}