MMCN_DESELECT_ALL message
The MMCN_DESELECT_ALL notification message is sent to the virtual list view when all items of an owner-data result pane are deselected.
Parameters
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lpDataObject
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NULL.
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arg
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Zero.
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param
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Zero.
Return value
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S_OK
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The snap-in successfully handled the notification.
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S_FALSE
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The snap-in does not handle the notification. MMC then performs a default operation for the notification.
Remarks
When all the items in a virtual list are deselected, MMC sends an MMCN_DESELECT_ALL notification rather than an MMCN_SELECT that identifies all the deselected items. MMCN_DESELECT_ALL is not sent for standard (non-virtual) lists.
For snap-ins that have a custom result pane (OCX or web), MMC sends an MMCN_SELECT or MMCN_DESELECT_ALL notification with a special data object (DOBJ_CUSTOMOCX or DOBJ_CUSTOMWEB) when the result pane is selected or deselected. The notification is sent to the snap-in's IExtendControlbar::ControlbarNotify and IComponent::Notify method. The only way for snap-ins to identify the corresponding scope item is to use the cookie (of the scope item) cached during MMCN_SHOW.
Requirements
| Minimum supported client |
Windows Vista |
| Minimum supported server |
Windows Server 2008 |
| Header |
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