file-association

Title is confusing, but don't know how to explain this in a few words: I have a java application that reads *.example files. I've also added a file association thanks to install4j so my application is launched when the user double clicks any file with extension *.example It seems that install4j sends the file path in the args[] so it should be easy to open that file and show it in my app. BUT what happens if the app is already running? I can only allow one instance of the application so, how can I know that the user is opening a file? I've found this: http://resources.ej-technologies.com

I would like to associate a file type in Windows with a particular application, but I need to make it so when the user opens the "Open With" menu, the name and icon of the application in the list is customized for that file type (i.e., not simply the name and icon of the executable). This is because the binary is a general binary that runs many different apps, depending on its command-line arguments (similar to python.exe or javaws.exe ). I don't want the "Open With" menu to show "Python" or "Java", I want it to show the name and icon for the application that is being passed on the command

I need to get the name of the program currently associated with a file extension for the current user. If you right-click on a file and select properties, then what I need is the program name that is to the right of the "Opens with" line. e.g. For ".xls", I want to be able to get the answer "Microsoft Office Excel", or whatever program the user has as their default program to open .xls files. I have determined it's not as easy as just going into HKEY_CLASSES_ROOT and picking it out, since it may also be specified in HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER or HKEY_USERS. Maybe all I need to

Can you dynamically assign CFBundleDocumentTypes to your Cocoa application? Meaning during run time can I assign more extensions for my app to handle. Currently I set some extensions for my app to handle using CFBundleDocumentTypes in the Info.plist, but I would like to do this through code while the application is executing (during run time). Basically can I make Launch Services aware of new extensions without modifying the Info.plist file. Thanks. At the moment, there’s no public API 1 for an application to dynamically (un)register document types with Launch Services during runtime. Open Emu

If I create a new app, and associate with, say, the .xml file extension on a particular computer, when someone double clicks the .xml file, it will launch my app and pass the file as parameter. But Windows seems to know what other files have the ability to work with that file type. How is that set up? Also, when I save a Microsoft Word file as an .xml file, then later double-click on the file, it will launch Microsoft Word, even though the .xml file type is associated with something else, such as Internet Explorer. Seems like there may be a stub associated with .xml file type which when

I have a click-once application. I have an associated file that I store the application's data in. When a user clicks on one of these files I want it to open the click-once app and load the file. I can set up the file association in the publish, the icon and name is correctly set. Clicking on the file opens the application, but the application doesn't seem to be passed the path to the file - the command arguments are empty. How do I get it so that the path to the file is passed to the application? When using Click Once, arguments are not passed in on the command line, they are passed in