Simulink：如何以编程方式查询选中的信号/信号线

以下是如何使用 MATLAB 代码以编程方式获取 Simulink 模型中当前选中的信号线。

get_selected_line.m

lineHandles = find_system(gcs, 'FindAll', 'on', 'Type', 'line', 'Selected', 'on');

lineHandles = find_system(gcs, 'FindAll', 'on', 'Type', 'line', 'Selected', 'on');

这将返回当前系统（gcs）中选中信号线的句柄。

例如，可以按以下方式打印信号名称：

print_selected_lines.m

lineHandles = find_system(gcs, 'FindAll', 'on', 'Type', 'line', 'Selected', 'on');

for i = 1:length(lineHandles)
    signalName = get(lineHandles(i), 'Name');
    if isempty(signalName)
        fprintf('Selected Line %d: <No Name>\n', i);
    else
        fprintf('Selected Line %d: %s\n', i, signalName);
    end
end

lineHandles = find_system(gcs, 'FindAll', 'on', 'Type', 'line', 'Selected', 'on');

for i = 1:length(lineHandles)
    signalName = get(lineHandles(i), 'Name');
    if isempty(signalName)
        fprintf('Selected Line %d: <No Name>\n', i);
    else
        fprintf('Selected Line %d: %s\n', i, signalName);
    end
end

示例输出：

selected_lines_output.txt

Selected Line 1: intermediary

Selected Line 1: intermediary

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