Testing if the app is already installed on windows package.

Perry Werneck
1 parent 165416ff
Showing 1 changed file with 7 additions and 0 deletions Show diff stats
win/pw3270.nsi.in
@@ -387,6 +387,13 @@ SectionEnd
  
 Function .onInit
  
+	#---[ Check if already installed ]--------------------------------------------------------------------
+
+	${If} ${FileExists} "$INSTDIR\@PRODUCT_NAME@.exe"
+		MessageBox MB_OK|MB_ICONEXCLAMATION "@PRODUCT_NAME@ is already installed. Please uninstall it first" /SD IDOK
+		Abort
+	${EndIf}
+
 	#---[ Check SDK Command line option ]-----------------------------------------------------------------
  
 !ifdef WITHSDK
...	...	@@ -387,6 +387,13 @@ SectionEnd
387	387
388	388	Function .onInit
389	389
	390	+ #---[ Check if already installed ]--------------------------------------------------------------------
	391	+
	392	+ ${If} ${FileExists} "$INSTDIR\@PRODUCT_NAME@.exe"
	393	+ MessageBox MB_OK\|MB_ICONEXCLAMATION "@PRODUCT_NAME@ is already installed. Please uninstall it first" /SD IDOK
	394	+ Abort
	395	+ ${EndIf}
	396	+
390	397	#---[ Check SDK Command line option ]-----------------------------------------------------------------
391	398
392	399	!ifdef WITHSDK
...	...