Rendering the Server Item

Objective Views User's Guide
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15.9 Rendering the Server Item

When the container application asks the server to render the document, the server invokes the virtual OnDraw() method in the COleServerItem class. The COleServerItem::OnDraw() takes a device context and a size parameter, and the device context is typically a metafile DC. The viewport contains a DrawMetafile() method that draws the contents of the model to a metafile. The DrawMetafile() method excludes the grid, page boundary lines, and selection handles from being drawn, since these are artifacts used to edit objects on the canvas.

Example 27: Rendering a server item

BOOL CMyAppSrvrItem::OnDraw(CDC* pDC, CSize& rSize)
{
  // Remove this if you use rSize
  UNREFERENCED_PARAMETER(rSize);

  //
  // Draw the viewport onto the metafile DC
  //
  CMyAppViewport* pViewport = GetViewport();

  if (pViewport != NULL)
  {
    pDC->SetMapMode(MM_TEXT);
    pViewport->DrawMetafile(pDC);
    pDC->SetWindowExt(1,1);
  }

  return TRUE;
}

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