The List_RegisterAction() function defined in the syListObj form is used to register commands that appear in the action pane for a list. The commands must be registered for them to be accessed by other list processing code.
List_RegisterAction(list_object, command, command_type, action)
• list_object – The list object (composite) that specifies characteristics for the list. This value will have been passed into the procedure that is registering actions for the list.
• command – The command resource that is being registered for the list’s action pane.
• command_type – A constant that specifies the conditions under which the command will be active on the action pane. The value corresponds to one of the following constants:
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|
Constant |
Description |
|---|---|
|
LISTCMDTYPE_SINGLESELECT |
The action is available when only one item is selected in the list. |
|
LISTCMDTYPE_MULTISELECT |
The action is available when one or more items is selected in the list. |
|
LISTCMDTYPE_ALWAYSAVAILABLE |
The action is always available. |
• action – A long integer value that specifies the action that will be performed for each of the items selected in the list. Typically, this value is a constant that was defined for the specific list action.
A long integer containing the index of the registered command.
This function is used during the list initialization procedure.