QImage save return false when using ~

Question

I want to save a QImage in the user's home, I use ~/ but save() seems to not appreciate and return false without any message... So

img->save("~/pict.jpg");

is not working and I'm looking for a glitch...

Is the missing closing quote in the code as well? It should be `save("~/pict.jpg");` — slaphappy, May 31 '13 at 15:10
Is the `QImage::save` working when you specify another location? i.e. you've verified it is actually working and that the ~ that's the issue? — Matthew, May 31 '13 at 15:14
@VBB ok good because sometimes it can be the JPG plugin isn't installed correctly which can cause `QImage::save` to return false since the format type isn't supported. That doesn't seem to be the case here. :) — Matthew, May 31 '13 at 15:15
@LucTouraille you're right, I might was looking with the wrong keywords — Thomas Ayoub, May 31 '13 at 15:20

score 3 · Accepted Answer · edited May 23 '17 at 10:25

3

~ is interpreted by the Shell, not by the operating system (or the C library, or the Qt library).

You need to get the user's home directory through getenv("HOME"), for instance. See also How can I find the user's home dir in a cross platform manner, using C++?

With Qt, you can use QDir::homepath to retrieve the user's home directory in a platform independent way.

edited May 23 '17 at 10:25

Community

answered May 31 '13 at 15:15

Andreas Fester

That should have been obvious for me. Thank you Andreas! – Thomas Ayoub May 31 '13 at 15:19

1 Answers1