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- TABLE OF CONTENTS
-
- radiobutton_gc/--datasheet--
- radiobutton_gc/RADIOBUTTON_GetClass
- radiobutton_gc/AllocRadioButtonNodeA
- radiobutton_gc/FreeRadioButtonNode
- radiobutton_gc/GetRadioButtonNodeAttrsA
- radiobutton_gc/SetRadioButtonNodeAttrsA
- radiobutton_gc/--datasheet-- radiobutton_gc/--datasheet--
-
- NAME
- radiobutton_gc -- create radiobutton BOOPSI objects
-
- SUPERCLASS
- gadgetclass
-
- REQUIRES
- bevel.image, glyph.image
-
- DESCRIPTION
- The radiobutton gadget class is used to create a mutually exclusive
- (MX) selection button group. Selection of an associated option is
- denoted by the depressed/filled button. Unlike GadTools, GA_Width and
- GA_Height to not specify the size of a single radio button. Instead
- it marks the entire domain of the gadget which allows for easier
- group layout. When used outside of a layout group you must be
- sure to provide enough space for the gadget to completly render
- all radio buttons and labels. However, within a layout group such
- as ReAction's own layout.gadget this is automatic and of no
- concern to the application programmer.
-
- Advantages that this class provides over the standard gadtools
- radiobutton (MX_KIND) are:
-
- > Strumming of the radio buttons with the mouse.
-
- > Aspect correct scaled buttons with any screen resolution or font.
-
- > Works under OS 2.0 or greater.
-
- METHODS
- OM_NEW -- Passed to superclass first, defaults set, then OM_SET.
-
- OM_SET -- Passed to superclass first, then custom tags set.
-
- OM_GET -- Returns requested setting or passed to superclass
-
- OM_DISPOSE -- Passed to superclass.
-
- GM_GOACTIVE -- Passed to superclass first, then radio activated
-
- GM_GOINACTIVE -- Passed to superclass first, then radio deactivated
-
- GM_HANDLEINPUT -- Handles button selection/strum. Overrides superclass.
-
- GM_HITTEST -- Overrides superclass, returns GMR_HITTEST.
-
- GM_RENDER -- Renders radio button(s).
-
- GM_DOMAIN -- Returns GDOMAIN_MINIMUM and GDOMAIN_MAXIMUM dimensions.
-
- GM_KEYACTIVE -- Activates button via keyboard. Advances selection
- to the next item (down), if SHIFT is pressed, it selects
- the previous item (up). Invoked by window.class only.
-
- GM_KEYINACTIVE -- Deactivates gadget. Invoked by window.class only.
-
- All other methods are passed to the superclass.
-
-
- ATTRIBUTES
- GA_ID (WORD)
- Applicability is (OM_NEW, OM_SET, OM_UPDATE, OM_NOTIFY)
-
- GA_TextAttr (struct TextAttr *)
- Used to set the text font to render the radiobutton labels.
-
- Defaults to RPort->Font, which is often the screen or
- window font.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- RADIOBUTTON_Labels (struct List *)
- Used to set the text labels for the radiobutton group.
-
- Defaults to NULL.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
-
- RADIOBUTTON_Spacing (WORD)
- Spacing between the radio buttons.
-
- Defaults to 1.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE, OM_NOTIFY)
-
- RADIOBUTTON_Selected (WORD)
- Currently selected radio button number.
-
- Defaults to 0.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- RADIOBUTTON_LabelPlace (WORD)
- Location of radiobutton text labels. Supports:
-
- PLACETEXT_RIGHT
-
- Defaults to PLACETEXT_RIGHT.
-
- Applicability is (OM_NEW, OM_SET, OM_UPDATE)
-
- NOTES
- GA_Height and GA_Width DO NOT specify the actual button size, but
- rather the entire "hit box" area which includes the text label.
- When being used with layout.gadget it will domain to a proper
- size to hold the number of buttons and largest text labels.
- Take care when designing interfaces with out layout to set
- a proper height and width to hold the radiobutton imagery.
- This may be done via sending a BOOPSI GM_DOMAIN GDOMAIN_MINIMUM
- method message to the object with DoGadgetMethod(), or computing
- a minimum size based on font height and length. In otherwords,
- use layout, its alot easier! :)
- radiobutton_gc/RADIOBUTTON_GetClass radiobutton_gc/RADIOBUTTON_GetClass
-
- NAME
- RADIOBUTTON_GetClass -- Gets the pointer to the radiobutton class.
-
- SYNOPSIS
- radiobutton_class = RADIOBUTTON_GetClass();
- D0
-
- Class * RADIOBUTTON_GetClass(VOID);
-
- FUNCTION
- Obtains the pointer to the RadioButton gadget class for use with
- NewObject(). This function always returns a valid pointer so
- you do not need to check it. The reason is that if the library
- opens fine, then the pointer returned is already setup. (Of course
- this implies that if opening the library fails, you shouldn't be
- calling this.)
-
- Note that this function does not create the class, that is done
- when the class library is opened.
-
- INPUTS
- Nothing.
-
- RESULT
- radiobutton_class - Pointer to the RadioButton gadget class.
-
- SEE ALSO
- radiobutton_gc/AllocRadioButtonNodeA radiobutton_gc/AllocRadioButtonNodeA
-
- NAME
- AllocRadioButtonNodeA -- Allocate a RadioButton node. (V40)
-
- SYNOPSIS
- struct Node * AllocRadioButtonNode(UWORD, Tag, ...)
- node = AllocRadioButtonNode(columns, Tag, ...)
-
- struct Node * AllocRadioButtonNodeA(UWORD, struct TagItem *)
- node = AllocRadioButtonNodeA(taglist)
-
- FUNCTION
- Allocates a node that can be added to the Exec linked list of
- labels in the radiobutton. This is the only way to allocate a
- node for this list, you cannot allocate nodes yourself because
- the RadioButton class uses a private node structure.
-
- INPUTS
- taglist - Attributes for the node, passed onto
- SetRadioButtonNodeAttrsA().
-
- RESULT
- node - A node that can be added into the Exec list of labels for
- a RadioButton gadget.
-
- SEE ALSO
- FreeRadioButtonNode(), SetRadioButtonNodeAttrsA()
- radiobutton_gc/FreeRadioButtonNode radiobutton_gc/FreeRadioButtonNode
-
- NAME
- FreeRadioButtonNode -- Free a RadioButton node. (V40)
-
- SYNOPSIS
- VOID FreeRadioButtonNode(struct Node *)
- FreeRadioButtonNode(node)
-
- FUNCTION
- Frees a RadioButtonNode allocated with AllocRadioButtonNodeA().
-
- INPUTS
- node - The node to free.
-
- SEE ALSO
- AllocRadioButtonNodeA()
- radiobutton_gc/GetRadioButtonNodeAttrsA radiobutton_gc/GetRadioButtonNodeAttrsA
-
- NAME
- GetRadioButtonNodeAttrsA -- Get attributes about a RadioButton node. (V40)
-
- SYNOPSIS
- VOID GetRadioButtonNodeAttrs(struct Node *, Tag, ...)
- GetRadioButtonNodeAttrs(node, firsttag, ...)
-
- VOID GetRadioButtonNodeAttrsA(struct Node *, struct TagItem *)
- GetRadioButtonNodeAttrsA(node, taglist)
-
- FUNCTION
- The RadioButton uses a private node structure and all attributes
- are hidden, and must therefore be accessed with this function.
-
- INPUTS
- node - The RadioButton node to get the information on.
- taglist - A tag list of attributes to get. ti_Tag is the attribute
- to get and ti_Data is a pointer to a location to copy the result
- to.
-
- SEE ALSO
- SetRadioButtonNodeAttrsA()
- radiobutton_gc/SetRadioButtonNodeAttrsA radiobutton_gc/SetRadioButtonNodeAttrsA
-
- NAME
- SetRadioButtonNodeAttrsA -- Set attributes of a RadioButton node. (V40)
-
- SYNOPSIS
- VOID SetRadioButtonNodeAttrs(struct Node *, Tag, ...)
- SetRadioButtonNodeAttrs(node, firsttag, ...)
-
- VOID SetRadioButtonNodeAttrsA(struct Node *, struct TagItem *)
- SetRadioButtonNodeAttrsA(node, taglist)
-
- FUNCTION
- Changes attributes for a RadioButton node. Since the RadioButton
- class uses a private node structure, this is the only way to change
- node attributes.
-
- You may NOT change node attributes when the node is in a list
- attached to a RadioButton gadget. You must first detach the list
- with RADIOBUTTON_Labels, ~0 before you can change attributes, and
- then re-attach the list.
-
- TAGS
- RBNA_Label (STRPTR)
-
- INPUTS
- node - Node whose attributes you are changing.
- taglist - Tag list of attributes to change.
-
- SEE ALSO
- GetRadioButtonNodeAttrsA()
-