qt - How to pass QString variable to QFile? -


getdata gets chosen file qtreeview , displays on label 'test', enables 'apply' button, when clicked calls settheme 

void optionsdialog::getdata(const qmodelindex &index) {     qstring selected = model2->filepath(index);     ui->test->settext(selected);     ui->pushbutton_apply_theme->setenabled(true); }  void optionsdialog::settheme() {     //char *file = selected->tolatin1().data();     //const std::string file = selected->tostdstring();     qfile qss(selected);     qss.open(qfile::readonly);     qapp->setstylesheet(qss.readall());     qss.close(); }

i can't seem pass filepath qfile in format wants, commented lines attempts failed. ' char *file = selected->tolatin1().data();' compiles segfaults in use.

as fails with:

qt/optionsdialog.cpp: in member function ‘void optionsdialog::settheme()’: qt/optionsdialog.cpp:176:23: error: no matching function call ‘qfile::qfile(qstring*&)’      qfile qss(selected);

forgive me used python, driving me nuts, appreciated!

qstring selected = model2->filepath(index); not set variable in (maybe same named) member optionsdialog::selected. creates new local variable.

if have member variable called selected should use this:

void optionsdialog::getdata(const qmodelindex &index) {     selected = model2->filepath(index);     ... }

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