Continuing on the note from the last post, you can find a good recipe here below for preventing TexNicCenter from opening more than one window, if you open the same tex-document often. Go down to the slightly cryptical heading “Configuring Windows DDE for TxC”.

File Action configuration dialog box
File Action configuration dialog box

Go to Folder Options from the Windows Explorer menu, and find TEX-files in the File Types tab. Press “Advanced” for the TEX-files and delete the action that is currently there. If you have no TEX entry, create a new one, and then create a new action. Enter the following into the text boxes:

Action: TeXnic Center
Application used to perform action: "C:\Program Files\TeXnicCenter\TEXCNTR.EXE" "%1"

Check the “Use DDE” check box.

DDE Message: [open("%1")]
Application: TEXCNTR
Leave “DDE Application Not Running” as blank
Topic: System

There, much better!