Open link in new browser window

Author: techtonik (talk, contrib)

Description

Link opened via ExecShell "open" "http://nsis.sf.net/" may happen to be loaded in existing browser window thus erasing previous content. Here is NSIS function to open link in new window.

Update by qwertymodo Use the new version with the included macro to execute without affecting any variables or the stack :)

The Function

Function openLinkNewWindow
  Push $3
  Exch
  Push $2
  Exch
  Push $1
  Exch
  Push $0
  Exch
 
  ReadRegStr $0 HKCR "http\shell\open\command" ""
# Get browser path
    DetailPrint $0
  StrCpy $2 '"'
  StrCpy $1 $0 1
  StrCmp $1 $2 +2 # if path is not enclosed in " look for space as final char
    StrCpy $2 ' '
  StrCpy $3 1
  loop:
    StrCpy $1 $0 1 $3
    DetailPrint $1
    StrCmp $1 $2 found
    StrCmp $1 "" found
    IntOp $3 $3 + 1
    Goto loop
 
  found:
    StrCpy $1 $0 $3
    StrCmp $2 " " +2
      StrCpy $1 '$1"'
 
  Pop $0
  Exec '$1 $0'
  Pop $0
  Pop $1
  Pop $2
  Pop $3
FunctionEnd
 
!macro _OpenURL URL
Push "${URL}"
Call openLinkNewWindow
!macroend
 
!define OpenURL '!insertmacro "_OpenURL"'

And you call it like this:

${OpenURL} "www.google.com"

You can also call it with a file parameter like this:

${OpenURL} "c:\mywebsite\index.html"

Thanks to Ryan Farley (http://ryanfarley.com/blog/archive/2004/05/16/649.aspx ) for an idea.