delphi 程序中隐藏的主菜单，使用 Alt 键自动显示

本文介绍了delphi 程序中隐藏的主菜单，使用 Alt 键自动显示的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

首先，让我说我讨厌 Windows Vista 和 Windows 7 中的此功能.其次，我想这样做..(隐藏菜单.zip)

解决方案

像往常一样使用 TMainMenu 和 TActionList.

然后做

procedure TForm1.FormShow(Sender: TObject);开始Self.Menu := nil;结尾;

(或在设计时简单地删除 Menu 关联)和

procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word;移位:TShiftState)；开始如果 (Key = VK_MENU) 或 (Key = VK_F10) 那么菜单 := MainMenu1;结尾;

和

procedure TForm1.WndProc(var Message: TMessage);开始遗传;case Message.Msg ofWM_EXITMENULOOP:设置菜单(句柄，0)；结尾;结尾;

不要忘记将表单的 KeyPreview 设置为 true.

(请注意，由于快捷方式由 TActionList 处理，因此即使菜单消失"，它们也能工作.)

First, let me say that I abominate this feature in Windows Vista and Windows 7. Second, I want to do it. Here is a question asking how to do what I want here, in WPF.

I want to do the same thing, but in Delphi, using VCL stock components, TMainMenu or Action Manager menus, or some available third party components, even Toolbar2000 or some other library.

Feature of Windows Vista/Windows 7 explorer main-menus:

• it's not visible when the app starts
• pressing and releasing Alt makes it visible
• pressing and releasing Alt again makes it invisible again
• repeatable.
• hotkeys work on menu items, even when menu is invisible*

(* Windows Explorer Hotkeys Example: Ctrl+A in Microsoft Windows Explorer selects all even when the menus are invisible, Alt+T = bring up Tools popup menu, even when the whole menu is hidden).

Update: Demo using accepted answer can be downloaded here. (HiddenMenu.zip)

解决方案

Use a TMainMenu with a TActionList as usual.

Then do

procedure TForm1.FormShow(Sender: TObject); begin Self.Menu := nil; end;

(or simply remove the Menu association at design time) and

procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState); begin if (Key = VK_MENU) or (Key = VK_F10) then Menu := MainMenu1; end;

and

procedure TForm1.WndProc(var Message: TMessage); begin inherited; case Message.Msg of WM_EXITMENULOOP: SetMenu(Handle, 0); end; end;

Don't forget to set the form's KeyPreview to true.

(Notice that, since the shortcuts are handled by the TActionList, they work even if the menu is 'gone'.)