Hi, Many thanks! You are right, I've moved around the Qt installation.. qmake -query is very useful.
I built Qt in machine A, copied to machine B and machine C. The absolute path of Qt installation on machine C is just the same as machine A, while the path on machine B is different.. So I can successfully start program using visual studio on machine C while it can't find the plugin on machine B. That's why I thought my Qt installation is not broken. Thank you again :) ------------------------------------------------------------------ Wei Yuemin 7FGame -----邮件原件----- 发件人: Koehne Kai [mailto:kai.koe...@digia.com] 发送时间: 2013年5月13日 16:26 收件人: 魏越闽; Qt Interest (interest@qt-project.org) 主题: RE: [Development] When debugging an application (using visual studio), Failed to load platform plugin "windows". Available platforms are: > -----Original Message----- > From: 魏越闽 [mailto:weiyue...@7fgame.com] > Sent: Monday, May 13, 2013 10:06 AM > To: Koehne Kai; Qt Interest (interest@qt-project.org) > Subject: Re: [Development] When debugging an application (using visual > studio), Failed to load platform plugin "windows". Available platforms are: > > Hi, > Very sorry for misusing the mail list. And thank you for the comments. > > 1). I've checked there's no qt.conf along my .exe. I don't even know > what is qt.conf before. > > 2). The loading of plugins fails no matter debug or release. There are > indeed debug versions (XXXd.dll) of the plugins in my Qt directory. In > fact, my .exe will be able to start if I copy all Qt dlls and plugins > along my .exe. But it's inconvenient to copy a bundle of dlls whenever > I create a small Qt project maybe for test something. It's also > inconvenient when I want to use another Qt version. The locations where Qt searches for plugins is actually hardcoded in QtCore. Easiest to show it is by running 'qmake -query' and look for 'QT_INSTALL_PLUGINS'. Is the absolute path shown here the right one? (Note that this should work even if you don't use qmake directly. It just prints the values from the QtCore library). > I guess QtVSAddin should set QT_DEBUG_PLUGINS and some other variables > whenever a start a .exe through visual studio, but sometimes it doesn't. No, QT_DEBUG_PLUGINS is just a helper that print more information about the plugin loading process. > I > tried manually set some environment variables in visual studio's > configuration, but the 'Environment' was always be set to ' > PATH=$(QTDIR)\bin%3b$(PATH)' > > Shall I file a bug about QtVSAddin ? No, since it's unlikely it's the addins fold. I suspect that your Qt installation is somehow broken / misconfigured, or has been moved around after installation. Regards Kai _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
