# WinJoystickMex for 64 bit Windows? **URL:** \ **Category:** Uncategorized\ **Created:** [June 5, 2013, 8:30am UTC](https://psychtoolbox.discourse.group/t/winjoystickmex-for-64-bit-windows/640 "2013-06-05T08:30:43Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![adwkiwi](https://avatars.discourse-cdn.com/v4/letter/a/839c29/32.png) [@adwkiwi](https://psychtoolbox.discourse.group/u/adwkiwi)\ **Post date:** [June 5, 2013, 8:30am UTC](https://psychtoolbox.discourse.group/t/winjoystickmex-for-64-bit-windows/640/1 "2013-06-05T08:30:43Z")
I just tried using this mex file on a 64 bit Win7 machine and I'm getting an 'undefined function' error even though the mex is in the pwd. My guess is that it's because I have a .mexw32 file; is there any chance of a version compiled for 64 bit? Thanks -andrew ---
**Author:** ![adwkiwi](https://avatars.discourse-cdn.com/v4/letter/a/839c29/32.png) [@adwkiwi](https://psychtoolbox.discourse.group/u/adwkiwi)\ **Post date:** [June 8, 2013, 12:17pm UTC](https://psychtoolbox.discourse.group/t/winjoystickmex-for-64-bit-windows/640/2 "2013-06-08T12:17:16Z")
The main reason I haven't compiled it myself is that I don't know how. I know very little about C, hence asking for help! I'll check that other implementation. -andrew > --- In [psychtoolbox@yahoogroups.com](mailto:psychtoolbox@yahoogroups.com), Matthew Edmundson \ wrote: > \> > \> My first thought would be to compile it yourself, but there must be some > \> non-trivial reason why this hasn't already been done. Mario obviously will > \> know. For kicks the other day, I tried compiling it myself on the 32-bit > \> side using the compile string that is provided in the header of > \> WinJoystickMex.c, but the compiler couldn't find the JOYINFO structure, so > \> it wouldn't compile. The following is the line from the header that I used, > \> in MATLAB 2012b, but apparently it still can't find the library where > \> JOYINFO is included: > \> > \> mex -v -g WinJoystickMex.c winmm.lib > \> > \> Anyway, our project actually needs more than four buttons, and JOYINFO is > \> limited to four, so we've had to go with a DirectInput implementation, > \> instead, choosing from one of the following, which also happen to have w64 > \> mex files: > \> [http://www.mathworks.com/matlabcentral/linkexchange/?term=tag%3A%22gamepad%22](http://www.mathworks.com/matlabcentral/linkexchange/?term=tag%3A%22gamepad%22) > \> > \> > \> Best, > \> Matthew > \> > \> > \> On Wed, Jun 5, 2013 at 4:30 AM, adwkiwi \ wrote: > \> > \> \> \*\* > \> \> > \> \> > \> \> I just tried using this mex file on a 64 bit Win7 machine and I'm getting > \> \> an 'undefined function' error even though the mex is in the pwd. My guess > \> \> is that it's because I have a .mexw32 file; is there any chance of a > \> \> version compiled for 64 bit? > \> \> > \> \> Thanks > \> \> -andrew > \> \> > \> \> > \> \> > \> ---
**Author:** ![mariokleiner](https://avatars.discourse-cdn.com/v4/letter/m/13edae/32.png) [@mariokleiner](https://psychtoolbox.discourse.group/u/mariokleiner)\ **Post date:** [June 8, 2013, 2:16pm UTC](https://psychtoolbox.discourse.group/t/winjoystickmex-for-64-bit-windows/640/3 "2013-06-08T14:16:31Z")
WinJoystickMex.mexw64 for 64-Bit Matlab on 64-Bit Windows is part of PTB since the PTB beta from 15.09.2012. I just tried it on Windows-7 with R2012a and it works for me. Is your ptb beta up to date? -mario > --- In [psychtoolbox@yahoogroups.com](mailto:psychtoolbox@yahoogroups.com), "adwkiwi" \ wrote: > \> > \> The main reason I haven't compiled it myself is that I don't know how. I know very little about C, hence asking for help! > \> > \> I'll check that other implementation. > \> -andrew > \> > \> --- In [psychtoolbox@yahoogroups.com](mailto:psychtoolbox@yahoogroups.com), Matthew Edmundson \ wrote: > \> \> > \> \> My first thought would be to compile it yourself, but there must be some > \> \> non-trivial reason why this hasn't already been done. Mario obviously will > \> \> know. For kicks the other day, I tried compiling it myself on the 32-bit > \> \> side using the compile string that is provided in the header of > \> \> WinJoystickMex.c, but the compiler couldn't find the JOYINFO structure, so > \> \> it wouldn't compile. The following is the line from the header that I used, > \> \> in MATLAB 2012b, but apparently it still can't find the library where > \> \> JOYINFO is included: > \> \> > \> \> mex -v -g WinJoystickMex.c winmm.lib > \> \> > \> \> Anyway, our project actually needs more than four buttons, and JOYINFO is > \> \> limited to four, so we've had to go with a DirectInput implementation, > \> \> instead, choosing from one of the following, which also happen to have w64 > \> \> mex files: > \> \> [http://www.mathworks.com/matlabcentral/linkexchange/?term=tag%3A%22gamepad%22](http://www.mathworks.com/matlabcentral/linkexchange/?term=tag%3A%22gamepad%22) > \> \> > \> \> > \> \> Best, > \> \> Matthew > \> \> > \> \> > \> \> On Wed, Jun 5, 2013 at 4:30 AM, adwkiwi \ wrote: > \> \> > \> \> \> \*\* > \> \> \> > \> \> \> > \> \> \> I just tried using this mex file on a 64 bit Win7 machine and I'm getting > \> \> \> an 'undefined function' error even though the mex is in the pwd. My guess > \> \> \> is that it's because I have a .mexw32 file; is there any chance of a > \> \> \> version compiled for 64 bit? > \> \> \> > \> \> \> Thanks > \> \> \> -andrew > \> \> \> > \> \> \> > \> \> \> > \> \> > \> ---
**Author:** ![adwkiwi](https://avatars.discourse-cdn.com/v4/letter/a/839c29/32.png) [@adwkiwi](https://psychtoolbox.discourse.group/u/adwkiwi)\ **Post date:** [June 10, 2013, 12:47pm UTC](https://psychtoolbox.discourse.group/t/winjoystickmex-for-64-bit-windows/640/4 "2013-06-10T12:47:54Z")
I'll check (not my machine). Thanks though, if it's working on yours then it should eventually work on this one. The 32/64 bit issue was just a guess anyway! -andrew > --- In [psychtoolbox@yahoogroups.com](mailto:psychtoolbox@yahoogroups.com), "Mario" \ wrote: > \> > \> > \> > \> WinJoystickMex.mexw64 for 64-Bit Matlab on 64-Bit Windows is part of PTB since the PTB beta from 15.09.2012. I just tried it on Windows-7 with R2012a and it works for me. > \> > \> Is your ptb beta up to date? > \> -mario