Example switching between top menus?

[dbuzz111]

I've google to no end and can't seem to find anyone talking about the correct way to do top menu's with Termial.Gui can anyone point me at an example or explaner on the best to way to have multiple top menu items and switch between them?

Thank you!

[tznind]

Hi, Hope you are doing well and enjoying the library. Do you mean having multiple menus that the user can switch between? For example:

If so then there are several scenarios that have multiple top level menus for example TableEditor has both a File and View menu:

Terminal.Gui/UICatalog/Scenarios/TableEditor.cs

Lines 50 to 81 in 3d75be4

	var menu = new MenuBar (new MenuBarItem [] {
	new MenuBarItem ("_File", new MenuItem [] {
	new MenuItem ("_OpenBigExample", "", () => OpenExample(true)),
	new MenuItem ("_OpenSmallExample", "", () => OpenExample(false)),
	new MenuItem ("OpenCharacter_Map","",()=>OpenUnicodeMap()),
	new MenuItem ("_CloseExample", "", () => CloseExample()),
	new MenuItem ("_Quit", "", () => Quit()),
	}),
	new MenuBarItem ("_View", new MenuItem [] {
	miAlwaysShowHeaders = new MenuItem ("_AlwaysShowHeaders", "", () => ToggleAlwaysShowHeader()){Checked = tableView.Style.AlwaysShowHeaders, CheckType = MenuItemCheckStyle.Checked },
	miHeaderOverline = new MenuItem ("_HeaderOverLine", "", () => ToggleOverline()){Checked = tableView.Style.ShowHorizontalHeaderOverline, CheckType = MenuItemCheckStyle.Checked },
	miHeaderMidline = new MenuItem ("_HeaderMidLine", "", () => ToggleHeaderMidline()){Checked = tableView.Style.ShowVerticalHeaderLines, CheckType = MenuItemCheckStyle.Checked },
	miHeaderUnderline = new MenuItem ("_HeaderUnderLine", "", () => ToggleUnderline()){Checked = tableView.Style.ShowHorizontalHeaderUnderline, CheckType = MenuItemCheckStyle.Checked },
	miShowHorizontalScrollIndicators = new MenuItem ("_HorizontalScrollIndicators", "", () => ToggleHorizontalScrollIndicators()){Checked = tableView.Style.ShowHorizontalScrollIndicators, CheckType = MenuItemCheckStyle.Checked },
	miFullRowSelect =new MenuItem ("_FullRowSelect", "", () => ToggleFullRowSelect()){Checked = tableView.FullRowSelect, CheckType = MenuItemCheckStyle.Checked },
	miCellLines =new MenuItem ("_CellLines", "", () => ToggleCellLines()){Checked = tableView.Style.ShowVerticalCellLines, CheckType = MenuItemCheckStyle.Checked },
	miExpandLastColumn = new MenuItem ("_ExpandLastColumn", "", () => ToggleExpandLastColumn()){Checked = tableView.Style.ExpandLastColumn, CheckType = MenuItemCheckStyle.Checked },
	miSmoothScrolling = new MenuItem ("_SmoothHorizontalScrolling", "", () => ToggleSmoothScrolling()){Checked = tableView.Style.SmoothHorizontalScrolling, CheckType = MenuItemCheckStyle.Checked },
	new MenuItem ("_AllLines", "", () => ToggleAllCellLines()),
	new MenuItem ("_NoLines", "", () => ToggleNoCellLines()),
	miAlternatingColors = new MenuItem ("Alternating Colors", "", () => ToggleAlternatingColors()){CheckType = MenuItemCheckStyle.Checked},
	miCursor = new MenuItem ("Invert Selected Cell First Character", "", () => ToggleInvertSelectedCellFirstCharacter()){Checked = tableView.Style.InvertSelectedCellFirstCharacter,CheckType = MenuItemCheckStyle.Checked},
	new MenuItem ("_ClearColumnStyles", "", () => ClearColumnStyles()),
	new MenuItem ("Sho_w All Columns", "", ()=>ShowAllColumns())
	}),
	new MenuBarItem ("_Column", new MenuItem [] {
	new MenuItem ("_Set Max Width", "", SetMaxWidth),
	new MenuItem ("_Set Min Width", "", SetMinWidth),
	new MenuItem ("_Set MinAcceptableWidth", "",SetMinAcceptableWidth),
	new MenuItem ("_Set All MinAcceptableWidth=1", "",SetMinAcceptableWidthToOne),
	}),
	});

Another option if you find the above snippet too daunting would be using the TerminalGuiDesigner dotnet tool:

If you follow the Hello World tutorial but create a TopLevel instead of a Window you should get the below experience:

dotnet new console -n hello
cd hello
dotnet add package Terminal.Gui

dotnet tool install --global TerminalGuiDesigner
TerminalGuiDesigner -v Toplevel MyTopLevel.cs

You can also use Ctrl+T to assign a menu shortcut and Ctrl+R to rename the class instance variable for the menu name