VBA for Ctrl F1

Ctrl F1 , hide ribbons in Excel
How can I write a VBA to do the same at File Opening ?

How about

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Ok, so were I should put this, so when I Open the file, Ribbon will go away ?

Put it in the Workbook open event.

This looks like is Crtl Shitft F1

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Can I have Crtl F1 only ?

How about

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It say Object variable with block variable not set

What is your entire code?

I like the answer #5 but could you please create a button
- if I press once I get ...false (post #5 code)
- if i press one more time I get it back ....true

You asked for something that would work when you opened the file, not a toggle button.

Yes, but then I realized that with Ctrl Shift F1 , I can not even save the file, all the ribbons are gone !

You don't need any more code, the post#5 is all you need.