QDir::mkpath

[drescherjm]

I am trying to figure out the intend usage of QDir::mkpath

On Qt 4.3 on windows XP

Qdir dir("John");
 
dir.mkpath("Kathy");

Qdir dir("John");

dir.mkpath("Kathy");

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The result is John/Kathy which is not what I expected especially because my intended usage was as follows.

QDir dir("John");
 
if (!dir.exists()) {
   dir.mkpath("John");
}

QDir dir("John");

if (!dir.exists()) {
   dir.mkpath("John");
}

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However the result is

John/John
is created.

I tried

QDir dir("John");
 
if (!dir.exists()) {
   dir.mkpath(".");
}

QDir dir("John");

if (!dir.exists()) {
   dir.mkpath(".");
}

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and got what I wanted (created just John in the current folder) however I am unsure that this will work on all platforms.

Also if you

QDir dir("John");
 
if (!dir.exists()) {
   dir.mkpath("");
}

QDir dir("John");

if (!dir.exists()) {
   dir.mkpath("");
}

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it exits with false because the path can not be empty.

[JimDaniel]

I think what you want to do is just instantiate an empty QDir, which will default to the program directory, then you can use mkpath to make a path wherever you want and it will create the proper directory structure for you, if it doesn't exist already:

QDir myDir();
if(!myDir.exists("John"))
{
    myDir.mkpath("John/Kathy/Ben/George/Ringo");
}

QDir myDir();
if(!myDir.exists("John"))
{
    myDir.mkpath("John/Kathy/Ben/George/Ringo");
}

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Or maybe that's not what you intend.

[drescherjm]

Thanks. Sounds reasonable.