Win XP - How to open image files in the same application window

澳洲大头

in XP:
- file Explorer / view / options / File types /
- Select the file type (jpg) - press Advanced - / edit/ open /edit

In applications browse to find the application Eg
C:\PROGRA~1\PAINTS~1\PSP.EXE

I used to be able to edit this line and add parameters eg PSP.exe /dde

and also edit the DDE MESSAGE put: [open("%1")]

This allowed me to control how PSP opened up. (multiple images in one
instance of PSP)