Directpry

[shailesh]

How to check whether given directory is existing or not?

[Dark_Tower]

Try QDir::exists() :rolleyes:

[shailesh]

Thanks for your reply man.

Ya man... i know abt this method of QDir. But first of all we have to create an object of QDir with some argument.

Now i have a string say c:\Shailesh and i want to check whether this directory exists or not???

[Dark_Tower]

Thanks for your reply man.

Ya man... i know abt this method of QDir. But first of all we have to create an object of QDir with some argument.

Now i have a string say c:\Shailesh and i want to check whether this directory exists or not???

Have you tried:

QDir("C:\Shailesh").exists()

[shailesh]

Thanks very much man... Its working...

[Chicken Blood Machine]

Have you tried:

QDir("C:\Shailesh").exists()


Or, rather:

QDir("C:\\Shailesh").exists()
;)

[Dark_Tower]

Or, rather:

QDir("C:\\Shailesh").exists()
;)

Sorry Chicken Blood Machine for my ignorance, but i've never seen accessing a directory with double dashed bar. Can you explain me please if exists any difference between accessing with one dashed bar or two?

[Chicken Blood Machine]

The backslash '\' is a special escape charater, used to mark no-printable characters like tab ('\t'), newline ('\n'), etc . Therefore you can't use '\' on its own. You must use '\\'.

[Lemming]

Actually, it is better to access the directories like this: "C:/MyDir/MySubdir" (using slashes instead of backslashes) with QT, especially if you are working on a code that is intended to work on some platforms other than win.

The difference between "\\" and "\" is that "\" symbol in C++ string constants marks the beginning of the escape sequence (like "\n" for newline). Therefore, if you wish to have a "\" symbol in your string you have to use a "\\" escape sequence.

[Chicken Blood Machine]

Actually, it is better to access the directories like this: "C:/MyDir/MySubdir"

Trust me "C:/MyDir/MySubdir" will work on no other platform than Windows!

Ideally, you will avoid absolute paths altogether and yes, it is better to use the forward slash for Qt code.

[Dark_Tower]

Thanks both, now I've got it clear!