无法隐藏“首选项"编辑菜单中的项目 [英] Can't hide "Preferences" item in edit-menu
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问题描述
当撤消并重做"时,如何在此图片中隐藏首选项"项"项目是否能够隐藏?我尝试使用(preferences:hide-dialog),但GUI没有任何区别.
How do I hide "Preferences" item in this picture when "undo and redo" items are able to hide? I tried using (preferences:hide-dialog) but there was no difference in GUI.
#lang racket/gui
(require framework)
(define menu-super-frame%
(frame:standard-menus-mixin
frame:basic%))
(define menu-frame%
(class menu-super-frame%
(inherit get-file-menu set-icon)
;hiding items in edit menu
(define/override (edit-menu:create-undo?) #f)
(define/override (edit-menu:create-redo?) #f)
(super-new)))
(define top-frame
(new menu-frame%
[label "Main Window"]
[width 200]
[height 200]
[alignment (list 'left 'top)]))
推荐答案
使用
(define/override (edit-menu:create-preferences?) #f)
注意:我尚未测试它是否有效,但是对代码的挖掘表明定义了以下内容:
Note: I haven't tested that it works, but digging in the code shows that the following are defined:
file-menu:create-new?
file-menu:create-open?
file-menu:create-open-recent?
file-menu:create-revert?
file-menu:create-save?
file-menu:create-save-as?
file-menu:create-print?
edit-menu:create-undo?
edit-menu:create-redo?
edit-menu:create-cut?
edit-menu:create-paste?
edit-menu:create-clear?
edit-menu:create-find?
edit-menu:create-preferences?
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