How to use C program to open a text file using Notepad?

[Goh Kak Ng]

Thanks for your reply ... I have try ...

system("C:\\Windows\\System32\notepad.exe c:\\AHome\testedit.text ");

The error massage is : 'C:\Windows\System32' is not recognized as Internal or External Command, Operable Program or Batch file.

[Goh Kak Ng]

Thanks for your reply ... cd is " change of directory " to C:\Windows\System32 where notepad.exe is located.

[Dave Kreskowiak]

You missed a backslash just before notepad.exe. You don't even really need the entire path to Notepad. This will work just fine:

system("notepad C:\\\\AHome\\\\testedit.text");

Asking questions is a skill CodeProject Forum Guidelines Google: C# How to debug code Seriously, go read these articles.
Dave Kreskowiak

[Mircea Neacsu]

Quote:

cd is " change of directory "

I know, and it shouldn't be there.

Mircea

[Victor Nijegorodov]

Goh Kak Ng wrote:

system("C:\\Windows\\System32\notepad.exe c:\\AHome\testedit.text ");

You missed one backslash in the path. It must be:

system("C:\\Windows\\System32\**\notepad.exe c:\\AHome\\**testedit.text ");

[Goh Kak Ng]

Yes. You are right! Try this work ...

system("C:\\Windows\\System32\\notepad.exe c:\\AHome\\testedit ");

Note that the test file name must be " testedit " and not " testedit.txt ". Otherwise, this file will not be found. Thanks!

[Goh Kak Ng]

Yes. you are right. cd should not be there. This is the right one ...

system("C:\\Windows\\System32\\notepad.exe c:\\A Home\\testedit ");

Thanks.

[Richard Deeming]

Make sure you're not doing that from an elevated process. :) It's not quite DLL hijacking, but if an attacker could write a rogue notepad.exe into the %PATH% somewhere, they could then get your process to launch it with elevated privileges.

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"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

[Dave Kreskowiak]

True :laugh:

Asking questions is a skill CodeProject Forum Guidelines Google: C# How to debug code Seriously, go read these articles.
Dave Kreskowiak

[Goh Kak Ng]

Could you help me to understand what do you mean by " elevated process "?

[Richard Deeming]

User Account Control (Windows 10) - Microsoft 365 Security | Microsoft Docs[^] How User Account Control works (Windows 10) - Microsoft 365 Security | Microsoft Docs[^]

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"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer