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shailesh
10th April 2006, 10:18
How to check whether given directory is existing or not?
Dark_Tower
10th April 2006, 10:22
Try QDir::exists() :rolleyes:
shailesh
10th April 2006, 10:44
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
10th April 2006, 10:49
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
10th April 2006, 11:03
Thanks very much man... Its working...
Chicken Blood Machine
10th April 2006, 18:18
Have you tried:
QDir("C:\Shailesh").exists()
Or, rather:
QDir("C:\\Shailesh").exists()
;)
Dark_Tower
10th April 2006, 18:31
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
10th April 2006, 19:03
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
10th April 2006, 19:04
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
11th April 2006, 07:19
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
11th April 2006, 10:08
Thanks both, now I've got it clear!
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