完善功能

src-tauri/nsis-hooks.nsh

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+; NSIS installer hooks for yurou
+; Override file association DefaultIcon to use custom file icon (yurou-sys.png → file-icon.ico)
+
+!macro NSIS_HOOK_POSTINSTALL
+  ; Read the file class (ProgID) registered by Tauri's APP_ASSOCIATE,
+  ; then overwrite its DefaultIcon to point to our custom file-icon.ico
+  ; instead of the application exe icon.
+  ;
+  ; This repeats for every extension we registered.
+  ; If the extension was not associated (backup value is empty) we skip it.
+
+  !define YUROU_FILE_ICON '"$INSTDIR\file-icon.ico"'
+
+  ; .md
+  ReadRegStr $0 SHCTX "Software\Classes\.md" ""
+  StrCmp $0 "" +2 +1
+  WriteRegStr SHCTX "Software\Classes\$0\DefaultIcon" "" ${YUROU_FILE_ICON}
+
+  ; .markdown
+  ReadRegStr $0 SHCTX "Software\Classes\.markdown" ""
+  StrCmp $0 "" +2 +1
+  WriteRegStr SHCTX "Software\Classes\$0\DefaultIcon" "" ${YUROU_FILE_ICON}
+
+  ; .mdown
+  ReadRegStr $0 SHCTX "Software\Classes\.mdown" ""
+  StrCmp $0 "" +2 +1
+  WriteRegStr SHCTX "Software\Classes\$0\DefaultIcon" "" ${YUROU_FILE_ICON}
+
+  ; .mkdn
+  ReadRegStr $0 SHCTX "Software\Classes\.mkdn" ""
+  StrCmp $0 "" +2 +1
+  WriteRegStr SHCTX "Software\Classes\$0\DefaultIcon" "" ${YUROU_FILE_ICON}
+
+  ; .mkd
+  ReadRegStr $0 SHCTX "Software\Classes\.mkd" ""
+  StrCmp $0 "" +2 +1
+  WriteRegStr SHCTX "Software\Classes\$0\DefaultIcon" "" ${YUROU_FILE_ICON}
+
+  ; .mdwn
+  ReadRegStr $0 SHCTX "Software\Classes\.mdwn" ""
+  StrCmp $0 "" +2 +1
+  WriteRegStr SHCTX "Software\Classes\$0\DefaultIcon" "" ${YUROU_FILE_ICON}
+
+  !undef YUROU_FILE_ICON
+
+  ; Notify Windows shell about the association change
+  System::Call "shell32::SHChangeNotify(i,i,i,i) (0x08000000, 0x1000, 0, 0)"
+!macroend
+
+!macro NSIS_HOOK_PREUNINSTALL
+  ; Cleanup is handled automatically by APP_UNASSOCIATE which deletes the
+  ; entire ProgID key — our custom DefaultIcon is removed along with it.
+!macroend