解决MATLAB不能设置为.m文件默认打开方式

转载：https://blog.csdn.net/yujiaerzong/article/details/77624167

将下面代码复制保存为 associateFiles.m 文件。
或者从下面链接下载文件https://ww2.mathworks.cn/matlabcentral/fileexchange/51165-matlab-file-association-fix
在MATLAB中运行 associateFiles.m 文件，即在命令行中输入 associateFiles 然后回车。
步骤2程序运行生成文件 MatlabFileAssocFix.reg 。
关闭MATLAB，双击运行 MatlabFileAssocFix.reg，会提示添加注册表信息，同意。

可以才去在bin目录中选择以管理员身份运行
MatlabFileAssocFix.reg文件就在matlab安装文件夹的bin目录中

设置.m文件默认打开程序为MATLAB2016a 完工。

function associateFiles(action, userExtList, fileStr)

% associateFiles(action, extList, fileStr)
%
% Makes a registry files that can be used to set correct file associantions on
% a windows platform. The following MATLAB file extensions are supported:
% .m, .mat, .fig, .mexw32, .mexw64, .p, .mdl, .mdlp, .slx, .mldatx, .req,
% .sldd, .slddc, .slxp, .sltx, .mn, .mu, .muphlp, .xvc, .xvz, .ssc, .mlapp,
% .mlappinstall, .mltbx, .mlpkginstall, .mlprj
%
% INPUT:
% action - optional string.
% * ‘add’ (default) adds/rewrites the MATLAB file association registry
% keys for this version.
% * ‘delete’ deletes the MATLAB file association registry entries for
% ALL versions of MATLAB (including “old style” ones)
% * ‘deleteadd’ is the same as ‘delete’ followed by ‘add’
% extList - optional string or cell array of strings containing the file
% extensions that should be associated with this version. Default is
% all MATLAB file extension (see above).
% fileStr - optional string with the name of the registry file to be written
% (possibly including path). Default is the file
% ‘MatlabFileAssocFix.reg’ in the current directory.
%
% USAGE:
% 1) Run with desired options (see above). A registry file should have been
% created.
% 2) Exit all running instances of MATLAB.
% 3) Make a backup copy of the windows registry if you need to restore the
% changes, see https://support.microsoft.com/en-us/kb/322756
% 4) Double click on the created file (possibly need to enter a password) and
% confirm.
% 5) Restart Windows (or explorer.exe).
% 6) The MATLAB files should now be associated with the MATLAB version that the
% registry file was created in and e.g. m-files should be opened in an
% already running instance of MATLAB.
%
% EXAMPLES:
% * associateFiles(‘deleteadd’) - Makes a registry files that deletes all
% previous MATLAB file association registry keys and write new ones that
% associates all MATLAB files with the MATLAB version that the registry file
% was created in.
% * associateFiles(’’, {’.m’, ‘.mat’, ‘.fig’}, ‘myFile’) - Makes a registry file
% “myFile.reg” that associates m-, mat- and fig-files with the MATLAB version
% that the registry file was created in.
%
% VERSION 1.0

% Defualt input
if (nargin < 1 || isempty(action))
action = ‘add’;
end
if (nargin < 2)
userExtList = {};
end
if (nargin < 3)
fileStr = ‘’;
end
if (~iscell(userExtList))
if (isempty(userExtList))
userExtList = {};
else
userExtList = {userExtList};
end
end

% Sanity check
if (~ischar(action) || (~strcmpi(action, ‘add’) && …
~strcmpi(action, ‘delete’) && ~strcmpi(action, ‘deleteadd’)))
error(‘The action to perform must be ‘‘add’’, ‘‘delete’’ or ‘‘deleteadd’’!’)
end
if (~isempty(userExtList) && ~min(cellfun(@ischar, userExtList)))
error(‘The file extension list must be a string or a cell array of strings!’)
end
if (~ischar(fileStr))
error(‘The file to write to must be a string!’)
end

% Get the currently running MATLAB version
verStr = regexp(version, ‘(\d*?.\d*?.\d*?).’, ‘tokens’);
verStr = verStr{1}{1};
verNum = str2double(regexprep(verStr, ‘(\d*?.\d*)[\x0000-\xffff]’, ‘$1’));
verHex = sprintf(‘x’, str2double(regexprep(verStr, …
'(\d?).[\x0000-\xffff]’, ‘$1’)), str2double(regexprep(verStr, …
'\d?.(\d*?).[\x0000-\xffff]*’, ‘$1’)));

% Get 32/64-bit
arch = computer;
switch arch
case ‘PCWIN’
binFolder = ‘win32’;
case ‘PCWIN64’
binFolder = ‘win64’;
end
binPath = fullfile(matlabroot, ‘bin’, binFolder);

% Known MATLAB files with possible DDE actions
fileExtCell = {…
‘fig’ , ‘MATLAB Figure’ , ‘-62’ , …
{‘Open’, ‘uiopen(’’%1’’,1)’} , [] ; …
‘m’ , ‘MATLAB Code’ , ‘-58’ , …
{‘Open’, ‘uiopen(’’%1’’,1)’} , {‘Run’, ‘run(’’%1’’)’} ; …
‘mat’ , ‘MATLAB Data’ , ‘-59’ , …
{‘Load’, ‘load(’’%1’’)’ } , {‘Open’, ‘uiimport(’’%1’’)’}; …
‘mdl’ , ‘Simulink Model’ , ‘-61’ , …
{‘Load’, ‘uiopen(’’%1’’,1)’} , [] ; …
‘mdlp’ , ‘Simulink Protected Model’ , ‘-72’ , …
[] , [] ; …
‘mexw32’, ‘MATLAB MEX’ , ‘-63’ , …
[] , [] ; …
‘mexw64’, ‘MATLAB MEX’ , ‘-63’ , …
[] , [] ; …
‘mn’ , ‘MuPAD Notebook’ , ‘-66’ , …
{‘Open’, ‘mupad(’’%1’’)’} , [] ; …
‘mu’ , ‘MuPAD Code’ , ‘-67’ , …
{‘Open’, ‘uiopen(’’%1’’,1)’} , [] ; …
‘muphlp’, ‘MuPAD Help’ , ‘-68’ , …
{‘Open’, ‘doc(symengine, ‘’%1’’)’} , [] ; …
‘p’ , ‘MATLAB P-code’ , ‘-60’ , …
[] , [] ; …
‘slx’ , ‘Simulink Model (SLX format)’, ‘-73’ , …
{‘Open’, ‘uiopen(’’%1’’,1)’} , [] ; …
‘ssc’ , ‘Simscape Model’ , ‘-65’ , …
{‘Open’, ‘uiopen(’’%1’’,1)’} , [] ; …
‘xvc’ , ‘MuPAD Graphics’ , ‘-69’ , …
{‘Open’, ‘mupad(’’%1’’)’} , [] ; …
‘xvz’ , ‘MuPAD Graphics’ , ‘-70’ , …
{‘Open’, ‘mupad(’’%1’’)’} , [] ; …
‘mlapp’ , ‘MATLAB Application’ , [] , [], [] ; …
‘mltbx’ , ‘MATLAB Toolbox’ , [] , [], [] ; …
‘mldatx’ , ‘Simulink Scenario’ , [] , [], [] ; …
‘req’ , ‘Simulink Requirements Link’ , [] , [], [] ; …
‘sldd’ , ‘Simulink Dictionary’ , [] , [], [] ; …
‘slddc’ , ‘Simulink Dictionary’ , [] , [], [] ; …
‘mlappinstall’, ‘MATLAB Application’ , [] , [], [] ; …
‘mlpkginstall’, ‘MATLAB Support Package’ , [] , [], [] ; …
‘slxp’ , ‘Simulink Protected Model Package’, [] , [], [] ; …
‘sltx’ , ‘Simulink Template’ , [] , [], [] ; …
‘mlprj’ , ‘MATLAB Project’ , [] , [], []};

% Possibly trim list
if (~isempty(userExtList))
fileExtCell = fileExtCell(ismember(fileExtCell(:, 1), …
regexprep(userExtList, ‘.’, ‘’)),

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