jsui sketch.default2d(); question

Nov 18, 2009 at 10:28pm

jsui sketch.default2d(); question

I’ve moved a patcher onto a windows xp machine from a Mac and am having problems with the jsui object not working properly. On my mac, it works to give “course” and “fine” movement to a knob. When I open the patcher on the Windows machine, the jsui is blank. If I double-click the js file, I get the following error message:

‘sketch’ is undefined

and a reference to the line in my script that has:


Is this a Windows/Mac thing? I’m not a javascript guru, so any tips or help would be greatly appreciated.


Nov 19, 2009 at 6:08am

I think my previous post may have been a bit of a red herring. In the Max window, I am getting the following lines

qtimage_open: quicktime is not installed
sketch_image: knobmaster.png error -1 opening file
Quicktime not installed

The file “knobmaster.png” does exist in the search path and it is a png file.

I’m specifically using png files to prevent the user from having to install quicktime. Does sketch require Quicktime? Is there a way around this? Thanks.

Nov 19, 2009 at 7:12am

Installing quicktime is listed as a requirement for Max5 on Windows. There might be no way around. When I was developing something for Windows that didn’t run properly, support told me to instruct users to install quicktime.

Nov 19, 2009 at 7:30am


As I read the System requirements on the C74 site, it sounds like QuickTime is only required on Windows if you are using Jitter. In this case, I’m not using Jitter.

Nov 20, 2009 at 10:49pm

I can load the knobmaster.png “stitched” image file just fine into a [pictctrl] object in windows, but when I try to use it in [jsui], it won’t work. The image works fine in both instances on my Mac, just not my PC.

Nov 24, 2009 at 10:26pm

Can someone confirm that QuickTime is required to use sketch_image in the jsui object on a PC. I’ve tried all the examples I can find where an image is called by sketch (even png images which are supposedly supported on the PC without QT), but I can’t get any of them to work on the PC. The Max window always references a Quicktime error. My issue is that I want to use jsui with an image in a standalone, but don’t want to force the user to install QuickTime if at all possible. Thanks.

Nov 26, 2009 at 4:18pm

jvkr, you were absolutely right. I contacted tech support about this as well, and the told me the same thing. When I pointed out the system requirements on the c74 website says QT is only needed to use jitter, they admitted that needed to be changed.


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