Hello Rick,
thank you for your answers.
That step does not seem to work for me. I tried the filename with path, without path, replaced the colon by different other characters, used quotation marks at various places, tried it with a path without spaces, but I guess I am just to stupid to make this work (using version 3.5.6). It just opens with an empty untitled document, and in case I use a space as separator (making the arguments two) I get a normal file opened that can be saved normally...
(edit: Forget it, I should have left out the initial slash, and it works now)
As I'll have the tool running in the background and wait for a hotkey, I'll just delete the file when the user presses the hotkey the next time or closed the utility completely (which will usually happen at shutdown).
Unfortunately, I cannot find system requirements on the website, and it does not install on my XP Pro machine at home (installer crashes in the middle). At work we are "forced" (by IIS extensions / COM components we are still using from the last millennium that do not work on anything more recent) to develop on 2003 machines, and if it does not work there (or is not able to create a scrolling screenshot of the "Add/Remove Programs" list, where most free screenshot tools fail as it is completely owner drawn and does not really provide screenreader hints) it does not help my main use case. Yes, I know that you can get all the info of that list from the registry, but that does not help me either.
And when I think about the processes needed to get an approval for installing anything not written ourselves on our development machines at my workplace, I won't even try. Even if 35$ is cheaper than the hours I'll spend on writing my own tool. (On the other hand, if it was easy to install your own software, I wouldn't have bothered trying to use Paint.NET at all and just installed GIMP like on my home machine, and I definitely would never have ended up here in this forum, and have missed a good graphics program to recommend to people who don't like GIMP...)
(edit: Ok, I found the 2.1 version which works on XP, but cannot do any scrolling screenshots and not capture screenreader objects either. At least on XP, PicPick (which costs 20$ and is free for non-commercial use) has more features. Don't know about Vista/7 though.)
Regards,
mihi
(edit2: I updated the zipfile linked above to include both the original plugin and the standalone version for Paint.NET)