The CA_ORDEREDTARGETEMPH and CA_MIXEDTARGETEMPH attributes of the CNRINFO data structure's flWindowAttr field determine the form of emphasis applied for the Text, Name, and Details views, as follows:

• If the CA_ORDEREDTARGETEMPH attribute is set:

  • The CN_DRAGAFTER notification code is sent when a container item is being dragged.

  • A black line is drawn between container items to show the current target position.
  
  If the CA_MIXEDTARGETEMPH attribute is set:

  • The CN_DRAGAFTER and CN_DRAGOVER notification codes are sent when a container item is being dragged. The notification code sent depends on the position of the pointer relative to the item it is positioned over.

  • A black line is drawn if the pointer is positioned such that the item being dragged is inserted between two target items.

  • A black border is drawn around either the entire target item for the Text and Details views or the icon or bit map for the Name view if the pointer is positioned such that the item being dragged is dropped on the target item.
  
  If the CA_ORDEREDTARGETEMPH and CA_MIXEDTARGETEMPH attributes are not set:

  • The CN_DRAGOVER notification code is sent when a container item is being dragged.

  • A black border is drawn around the entire target item for the Text and Details views, and around the icon or bit map only for the Name view.

  For the Icon and Tree view, the CA_ORDEREDTARGETEMPH and CA_MIXEDTARGETEMPH attributes are ignored, so target emphasis is applied as follows:

  • The CN_DRAGOVER notification code is sent when a container item is dragged.

  • A black border is drawn around the target, as follows:

    • For the Icon view, if the target is another container item, a black border is drawn around the icon or bit map that represents the container item, but not around the text string beneath it. If the target is white space, a black border is drawn around the outer edge of the entire work area.

    • For the Tree icon and Tree name views, a black border is drawn around the icon or bit map that represents the container item, but not around the text string to the right of it.

    • For the Tree text view, a black border is drawn around the entire target item.

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