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

On Qt 4.3 on windows XP

Qt Code: 
  1. Qdir dir("John");
  2.  
  3. 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.

Qt Code: 
  1. QDir dir("John");
  2.  
  3. if (!dir.exists()) {
  4.    dir.mkpath("John");
  5. }
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However the result is

John/John
is created.

I tried
Qt Code: 
  1. QDir dir("John");
  2.  
  3. if (!dir.exists()) {
  4.    dir.mkpath(".");
  5. }
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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

Qt Code: 
  1. QDir dir("John");
  2.  
  3. if (!dir.exists()) {
  4.    dir.mkpath("");
  5. }
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it exits with false because the path can not be empty.