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Manipulating Buttons
These are functions for getting and setting properties of buttons. Often these are used by a button’s invocation function to determine what to do.
Where a button parameter is specified, it means an object referring to a specific button, either an overlay (for overlay buttons), or a buffer-position or marker (for text property buttons). Such an object is passed as the first argument to a button’s invocation function when it is invoked.
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Return the position at which button starts.
-
Return the position at which button ends.
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Get the property of button button named prop.
-
Set button’s prop property to val.
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Call button’s
action
property (i.e., invoke the function that is the value of that property, passing it the single argument button). If use-mouse-action is non-nil
, try to invoke the button’smouse-action
property instead ofaction
; if the button has nomouse-action
property, useaction
as normal. If thebutton-data
property is present in button, use that as the argument for theaction
function instead of button.
-
Return button’s text label.
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Return button’s button-type.
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Return
t
if button has button-type type, or one of type’s subtypes.
-
Return the button at position pos in the current buffer, or
nil
. If the button at pos is a text property button, the return value is a marker pointing to pos.
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Set the button-type type’s prop property to val.
-
Get the property of button-type type named prop.
-
Return
t
if button-type type is a subtype of supertype.
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Licensed under the GNU GPL license.
https://www.gnu.org/software/emacs/manual/html_node/elisp/Manipulating-Buttons.html