ImageButton

Section: ET++ class description (n)
Updated: automatically Thu Mar 21 20:12:53 1991
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NAME

ImageButton.short - a button with a graphic image

DESCRIPTION

The ImageButton is used to trigger an action, similar to the class ActionButton. But instead of a string or a VObject it contains two bitmaps. The first one is drawn when the button is unselected. The second is displayed as a feedback to the user as long as the button is pressed. On selection the ImageButton sends its id and the partcode cPartToggle via Control to its next event handlers.

classes are never derived from ImageButton.
class ImageButton is sometimes reused directly.
class ImageButton contains 7 methods.

owner of class:: nobody.
baseclasses:: Button
subclasses:: ScrollBarButton
flags:: ButtonFlags

INSTANCE VARIABLES

bm1 (protected Bitmap *)

This bitmap is displayed when the button is unselected. bm1 must not be NULL.

bm2 (protected Bitmap *)

This bitmap is displayed as a feedback to the user as long as the button is pressed. bm2 must not be NULL.

idleEvents (protected bool)

controls whether idle events are reported during selection of the button. Its effect is the same as the flag eButtonIdle (see method Button::DoOnItem).
Known Problems: idleEvents should be stored in the flag eButtonIdle. Overriding DoLeftButtonDownCommand would not be necessary then.

INSTANCE METHOD LIST

client interface: ImageButton
implementation: DoLeftButtonDownCommand
DrawInner
GetMinSize
PrintOn
ReadFrom
~ImageButton

FILES

declaration:: Buttons.h

HISTORY

joe@csesbg.at Fri Sep 06 10:50 1991 MET DST

This document was created by man2html, using the manual pages.
Time: 00:40:27 GMT, March 30, 2022