[Qt-interest] Porting Qt 3 to Qt 4

[Jake Colman]

>>>>> "SAB" == Scott Aron Bloom <Scott.Bloom at onshorecs.com> writes:

   SAB> The QAction is much simpler to use.. In general, you can create
   SAB> them two ways..

   SAB> First, you can create them on the heap and store the pointer for
   SAB> later.  You are then responsible for the memory (which you can
   SAB> always use the Qt parent/child relationship to handle)

   SAB> You then call addAction( QAction * ) on any QWidget.  QMenu and
   SAB> QToolBar have special addAction methods, however, if the action
   SAB> has a keyboard shortcut, and its on a widget, it will get
   SAB> triggered when the keyboard shortcut is typed.

   SAB> For any given action, you can have shortcuts, icons, hover text,
   SAB> checkable , checked, you then also connect to the QActions
   SAB> triggered signal to execute the slot.

   SAB> You can assign the SAME action to multiple containers.  For
   SAB> instance, you can create the action, have it owned by the main
   SAB> window, then add it to a tool bar and a menu of that main
   SAB> window.. You might also add it to a context menu.

   SAB> The great part, is you only need to set it to "checked" once, or
   SAB> add its icon once.

   SAB> Another option, that I usually only use in transient actions on
   SAB> context menus, is to use the addAction( QString ) which creates
   SAB> a QAction with the container as the parent.  You should NOT add
   SAB> these actions to another container widget.

   SAB> So your notion of finding it, isn't necessary, since now you
   SAB> simply store a pointer to it.

   SAB> As to the Checkbox vs the Check mark, look at the QStyleSHeet
   SAB> classes to set them on the QMenu item you have

Scott,

Thanks, that was very helpful.  Please see my new posting regarding the
QStyleSheet.  Perhaps you can help with that too.

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Jake Colman | Director, Software Development
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