Direct loading a file into executable by clicking

Hello,

I have an file that use to reload input values, let's say "file.abc" a text file that stores the input numerical/text values for a MATLAB GUI/executable. I put a unique extension of ".abc" on purpose so that it can be a file that's specific for this executable. How can I make the gui/executable in such a way that when I double click on the file directly on the Windows10 file explorer, it will start the executable with those values?

I know how to do this by starting the MATLAB GUI/executable first and loading the file, but I am trying to learn how to do it by (double) clicking on the file explorer directly, just like the way any other software would work.

My next question would be, how to assign a visual on to the "file.abc" so that it won't look just empty white rectangle on file explorer? E.g., the way matlab .m files look with that 3D curve and zigzag line.

Thanks,

Baha

[Jan]

You forgot to mention which operating system you use. In addition this does not seem to have any realtion to Matlab except that you have mentioned the icon of .m files. Then the question would be off-topic in this forum.