On Jul 21, 2011, at 4:02 PM, Mark Schonewille wrote: > Hi Charles, > > I read your e-mail again. I understand that you want to know whether one or > more fields have changed, not whether a file is open. > > Usually, I generate an md5Digest and save that: > > on closeField > makeDigest > end closeField > > on makeDigest > put empty into myDigest > repeat with x = 1 to number of fields > put md5Digest(fld x & myDigest) into myDigest > end repeat > set the cDigest of this stack to myDigest > end makeDigest > > function dataChanged > put empty into myDigest > repeat with x = 1 to number of fields > put md5Digest(fld x & myDigest) into myDigest > end repeat > return (the cDigest of this stack is myDigest) > end dataChanged > > You just will have to figure out what is a smart event to check the digest: > closing a field, closing a window, opening a window, refreshing the file > menu, etc. > > When you close the window, you might want to do this: > > on closeStackRequest > if dataChanged then > answer "Do you want?" with "Don't Save" or "OK" or "No" > if it containt "Don't" then > exit closeStackRequest > else if it is "No" then > pass closeStackRequest > else > // do your saving stuff here > // return true if the file was saved > if the result is true then > pass closeStackRequest > end if > end if > end if > end closeStackRequest
I use a frontscript -- wholesale is better than retail: on closefield setDirty pass closefield end closefield on setDirty tf if tf = empty then put true into tf put the version into v replace "." with empty in v if v < 453 then exit setDirty -- version must be 4.5.3 or higher, -- or you just create a new customprop set the modifiedMark of stack "myStack" to tf end setDirty If you want to exclude certain fields, use a customprop to mark fields that shouldn't trigger setDirty when edited: set the the dontFlagDirty of fld "excludedFld" to true Then in the closeField handler in the frontscript, insert as the first line if the dontFlagDirty of the target <> true then pass closefield Changes other than field content that should be saved (radiobuttons or checkboxes, etc) can be handled, eg, with a mouseup handler in the frontscript, and suitable checks on the target. (Pass the mouseup!) I also do: on preopenstack set dirty false ... <rest of your initialization here> ... ... end preopenstack -- Peter Peter M. Brigham pmb...@gmail.com http://home.comcast.net/~pmbrig _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
