What was it in Win98? Win95? Windows 3.1? (no doubt Win 3.1 it was pbrush.exe...)
I doubt I'm imagining things, it was
pbrush.exe at one time. I'd like to know when the transition happened.
Also, when did the whole application get renamed from paintbrush to mspaint? Did the executable change with it at the same time?
ADDED Jul 5 '11:
MaxMackie mentioned this which is an interesting page and answers it.
From some newsgroup posts that I came across while researching this issue, apparently on Windows 9x series machines (e.g. Windows 98), a pbrush.exe file actually was included in the system32 directory that was just a stub which executed mspaint.exe. (In even older Windows versions, pbrush.exe was the 16-bit version of the Paint program; the 32-bit version, mspaint.exe, was apparently introduced with Windows 95.)
For the 32-bit Windows NT series, an engineer at Microsoft must have decided to switch the pbrush command from working via the actual pbrush.exe stub file to taking advantage of the HKLM\Software\Microsoft\Windows\CurrentVersion\App Paths registry key.