qt - Gtk-WARNING **: gtk_disable_setlocale() must be called before gtk_init() -

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whenever use opencv's cv::imshow alongside qt's qapplication, error: 

gtk-warning **: gtk_disable_setlocale() must called before gtk_init()

i did searching , ended reading more , more stuff don't understand, got ideas how opencv , gtk+ connected. , since warning instruction call before something, included gtk.h , called gtk_disable_setlocale(), ended more errors.

my code runs despite warning without problem, bugs me! , assume behind warning, there essential stuff programmer should understand. maybe can explain whole thing in way advanced newbie can understand? ;)

edit: i'm using ubuntu 12.10, opencv 2.4, gtk 2.24.13 , qmake -v tells me 

qmake version 2.01a  using qt version 4.8.3 in /usr/lib/x86_64-linux-gnu

if going use qt windowing system, it's best avoid creating opencv windows alongside qt windows.

convert iplimage or cv::mat qimage , draw on qt window. check cvimage, simple qt/opencv example displays image loaded opencv on qt window, , shows rgb values of pixel based on mouse coordinates.


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