C / C++ / MFC

void CView::OnFilePrintPreview()<br />
{<br />
    // In derived classes, implement special window handling here<br />
    // Be sure to Unhook Frame Window close if hooked.<br />
<br />
    // must not create this on the frame. Must outlive this function<br />
    CPrintPreviewState* pState = new CPrintPreviewState;<br />
<br />
    if (!DoPrintPreview(AFX_IDD_PREVIEW_TOOLBAR, this,<br />
                RUNTIME_CLASS(CPreviewView), pState))<br />
    {<br />
        // In derived classes, reverse special window handling<br />
        // here for Preview failure case<br />
<br />
        TRACE0("Error: DoPrintPreview failed");<br />
        AfxMessageBox(AFX_IDP_COMMAND_FAILURE);<br />
        delete pState;      // preview failed to initialize, <br />
                    // delete State now<br />
    }<br />
}