使用鼠标右键删除选择表中的行 - Matlab 2020a

Question

在此功能（应用程序设计器）中，我在使用鼠标左键选择时删除表格中的一行，如何使用右键或其他键+鼠标组合而不是左键进行选择？

代码：

% Cell selection callback: infoTable
        function infoTableCellSelection(app, event)
            indices = event.Indices;
            data = app.infoTable.Data;
            row = indices(:,1);
            figSelect = uifigure;
            figSelect.SelectionType ='alt'; 
            selection = uiconfirm(figSelect,'Delete row?','Confirm Close',...
                        'Icon','question');
            disp(selection); 
            disp(figSelect.SelectionType);
            switch selection
            case 'OK'
                app.infoTable.Data(row,:) = [];
                close(figSelect);
            case 'Cancel'
                close(figSelect);
                return
            end 

后面的代码：

function createComponents(app)
...
    app.infoTable.CellSelectionCallback = createCallbackFcn(app, @infoTableCellSelection, true);

Answer 1

可以通过父级uifigure（我称之为app.figMain）检测到选择uitable 时按下的任何修饰键（即shift、control）。修饰符通过未记录的命令modifiers = get(app.figMain,'CurrentModifier') 在元胞数组中返回。您可以使用if 语句，该语句仅在modifiers 中未列出按键时运行。换句话说，表格选择回调只针对左键运行，而不针对 shift-click、ctrl-click 等。

在给定的代码中实现它：

    function infoTableCellSelection(app, event)
        modifiers = get(app.figMain,'CurrentModifier');
        if isempty(modifiers) % Check that shift-key, ctrl-key, etc. is not pressed
            indices = event.Indices;
            data = app.infoTable.Data;
            row = indices(:,1);
            figSelect = uifigure;
            selection = uiconfirm(figSelect,'Delete row?','Confirm Close',...
                        'Icon','question');
            disp(selection); 
            disp(figSelect.SelectionType);
            switch selection
            case 'OK'
                app.infoTable.Data(row,:) = [];
                close(figSelect);
            case 'Cancel'
                close(figSelect);
                return
            end
        end
    end 

MATLAB Undocumented 描述了CurrentModifier 命令：CurrentModifier