Problem regaridng Type casting QVariant

[sudheer168]

Hi everybody ,
I got problem regarding typecasting . I have one structure called Disrict and I want to set the object of district as data to Qtreewidgetitem.

QTreeWidgetItem *itemdist = new QTreeWidgetItem();
District *dist;
itemdist->setData(1, Qt::ToolTipRole, dist);
QVariant item = itemdist->data(1, Qt::ToolTipRole);
district *temp = static_cast<district*>(temp1);

QTreeWidgetItem *itemdist = new QTreeWidgetItem();
District *dist;
itemdist->setData(1, Qt::ToolTipRole, dist);
QVariant item = itemdist->data(1, Qt::ToolTipRole);
district *temp = static_cast<district*>(temp1);

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But in line 5 it is showing error as

error C2440: 'static_cast' : cannot convert from 'QVariant' to 'district *'

error C2440: 'static_cast' : cannot convert from 'QVariant' to 'district *'

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I tried by using reinterpret_cast ,but it is showing same error . so how can I cast the variant item to district type. The main thing I want to do is assing district object to Qtreewidgetitem object and I want to get back the district object using Qtreewidgetitem object.
So please suggest me to solve this problem.

Regards,
Sudheer.