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authorEgor Tensin <Egor.Tensin@gmail.com>2015-06-10 21:51:24 +0300
committerEgor Tensin <Egor.Tensin@gmail.com>2015-06-10 21:51:24 +0300
commit8f48490b3c2b10ec8d941e0744d154c3930b4d6e (patch)
treee57b045cfe3404e4b1546786596b7efb788ca3f1 /RegUtils.hs
parentinitial commit (diff)
downloadwindows-env-8f48490b3c2b10ec8d941e0744d154c3930b4d6e.tar.gz
windows-env-8f48490b3c2b10ec8d941e0744d154c3930b4d6e.zip
notify about environment updates
Diffstat (limited to '')
-rw-r--r--RegUtils.hs16
1 files changed, 16 insertions, 0 deletions
diff --git a/RegUtils.hs b/RegUtils.hs
index 677e4f8..429abec 100644
--- a/RegUtils.hs
+++ b/RegUtils.hs
@@ -62,6 +62,21 @@ setString key subKeyPath valueName valueValue =
withTStringLen valueValue $ \(ptr, len) -> do
type' <- getType key subKeyPath valueName
regSetValueEx subKey valueName (fromMaybe rEG_SZ type') ptr $ len * sizeOf (undefined :: TCHAR)
+ notifyEnvironmentUpdate
+
+foreign import ccall "BroadcastSystemMessageW"
+ c_BroadcastSystemMessage :: DWORD -> LPDWORD -> UINT -> WPARAM -> LPARAM -> IO LONG
+
+notifyEnvironmentUpdate :: IO ()
+notifyEnvironmentUpdate =
+ withCWString "Environment" $ \lparamPtr -> do
+ let wparam = fromIntegral $ castPtrToUINTPtr nullPtr
+ let lparam = fromIntegral $ castPtrToUINTPtr lparamPtr
+ c_BroadcastSystemMessage bSF_POSTMESSAGE nullPtr wM_SETTINGCHANGE wparam lparam
+ return ()
+ where
+ bSF_POSTMESSAGE = 0x10
+ wM_SETTINGCHANGE = 0x1A
delValue :: HKEY -> String -> String -> IO ()
delValue key subKeyPath valueName =
@@ -69,6 +84,7 @@ delValue key subKeyPath valueName =
withForeignPtr subKey $ \subKeyPtr ->
withCWString valueName $ \valueNamePtr -> do
ret <- c_RegDeleteValue subKeyPtr valueNamePtr
+ notifyEnvironmentUpdate
case ret of
0x0 -> return ()
0x2 -> ioError $ mkIOError doesNotExistErrorType "RegQueryValueEx" Nothing $ Just (subKeyPath ++ "\\" ++ valueName)