diff options
Diffstat (limited to 'Modules/NSIS.template.in')
| -rw-r--r-- | Modules/NSIS.template.in | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/Modules/NSIS.template.in b/Modules/NSIS.template.in index 819cc5c..d4f5964 100644 --- a/Modules/NSIS.template.in +++ b/Modules/NSIS.template.in @@ -899,6 +899,28 @@ SectionEnd ; "Program Files" for AllUsers, "My Documents" for JustMe... Function .onInit + StrCmp "@CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL@" "ON" 0 inst + + ReadRegStr $0 HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\@CPACK_PACKAGE_NAME@" "UninstallString" + StrCmp $0 "" inst + + MessageBox MB_YESNOCANCEL|MB_ICONEXCLAMATION \ + "@CPACK_NSIS_PACKAGE_NAME@ is already installed. $\n$\nDo you want to uninstall the old version before installing the new one?" \ + IDYES uninst IDNO inst + Abort + +;Run the uninstaller +uninst: + ClearErrors + ExecWait '$0 _?=$INSTDIR' ;Do not copy the uninstaller to a temp file + + IfErrors uninst_failed inst +uninst_failed: + MessageBox MB_OK|MB_ICONSTOP "Uninstall failed." + Abort + + +inst: ; Reads components status for registry !insertmacro SectionList "InitSection" |