57 lines
No EOL
1.4 KiB
Haskell
57 lines
No EOL
1.4 KiB
Haskell
{-
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install my lib: https://github.com/KonstantinDjairo/haskell-obj-c
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then:
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$ ghc -package-env - appleKit.hs -o hello \
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-package haskell-obj-c \
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-package libffi \
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-framework AppKit
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-}
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import Foreign.C.String (withCString)
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import Foreign.LibFFI (argPtr, retPtr, retVoid, retCULong)
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import Foreign.Ptr (castPtr)
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import ObjC.Runtime
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main :: IO ()
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main = withAutoreleasePool $ do
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loadFramework "AppKit"
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appClass <- getRequiredClass "NSApplication"
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_ <- sendClassMsg appClass (mkSelector "sharedApplication")
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(retPtr retVoid) []
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alertClass <- getRequiredClass "NSAlert"
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alertPtr <- sendClassMsg alertClass (mkSelector "new")
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(retPtr retVoid) []
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let alert = RawId (castPtr alertPtr)
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stringClass <- getRequiredClass "NSString"
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title <- makeString stringClass "Hello from Haskell"
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detail <- makeString stringClass "RawId-only AppKit test."
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let RawId titlePtr = title
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RawId detailPtr = detail
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_ <- sendRawMsg alert (mkSelector "setMessageText:")
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retVoid [argPtr titlePtr]
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_ <- sendRawMsg alert (mkSelector "setInformativeText:")
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retVoid [argPtr detailPtr]
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_ <- sendRawMsg alert (mkSelector "runModal")
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retCULong []
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pure ()
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makeString :: Class -> String -> IO RawId
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makeString cls s =
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withCString s $ \cs -> do
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ptr <- sendClassMsg cls (mkSelector "stringWithUTF8String:")
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(retPtr retVoid) [argPtr cs]
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pure (RawId (castPtr ptr)) |