How to control icon size in tooltips

[jobrandt]

Hello,

i have created an action:

itemsDeleteAct->setIcon(QIcon(":Delete_Items.png"));
itemsDeleteAct->setText(tr("Delete items"));
itemsDeleteAct->setShortcut(QString("Del"));
itemsDeleteAct->setShortcutContext(Qt::WidgetShortcut);
itemsDeleteAct->setStatusTip(tr("Delete selected items"));
itemsDeleteAct->setToolTip(itemsDeleteAct->statusTip());

itemsDeleteAct->setIcon(QIcon(":Delete_Items.png"));
itemsDeleteAct->setText(tr("Delete items"));
itemsDeleteAct->setShortcut(QString("Del"));
itemsDeleteAct->setShortcutContext(Qt::WidgetShortcut);
itemsDeleteAct->setStatusTip(tr("Delete selected items"));
itemsDeleteAct->setToolTip(itemsDeleteAct->statusTip());

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This action is added to a toolbar. If the mouse hovers above the toolbutton a tooltip is shown(tooltip.png)

How can i control the size of the icon in this tooltip?

I can resize Delete_Items.png, but i use this action at different places.
Resizing the image would not work if i use a vector(.svg) graphic.

Best regards