Copyright	2009 Balazs Komuves 2013 shelarcy
License	BSD-style
Maintainer	shelarcy@gmail.com
Stability	Provisional
Portability	Non-portable (Win32 API)
Safe Haskell	None
Language	Haskell2010

System.Win32.WindowsString.Utils

Description

Utilities for calling Win32 API

Synopsis

try :: String -> (LPTSTR -> UINT -> IO UINT) -> UINT -> IO WindowsString
tryWithoutNull :: String -> (LPTSTR -> UINT -> IO UINT) -> UINT -> IO WindowsString
trySized :: String -> (LPTSTR -> CInt -> IO CInt) -> IO WindowsString
maybePtr :: Maybe (Ptr a) -> Ptr a
ptrToMaybe :: Ptr a -> Maybe (Ptr a)
maybeNum :: Num a => Maybe a -> a
numToMaybe :: (Eq a, Num a) => a -> Maybe a
try' :: Storable a => String -> (Ptr a -> PDWORD -> IO BOOL) -> DWORD -> IO [a]
peekMaybe :: Storable a => Ptr a -> IO (Maybe a)
withMaybe :: Storable a => Maybe a -> (Ptr a -> IO b) -> IO b
fromDateFormatPicture :: String -> Maybe String
fromTimeFormatPicture :: String -> Maybe String

Documentation

try :: String -> (LPTSTR -> UINT -> IO UINT) -> UINT -> IO WindowsString Source #

Support for API calls that are passed a fixed-size buffer and tell you via the return value if the buffer was too small. In that case, we extend the buffer size and try again.

tryWithoutNull :: String -> (LPTSTR -> UINT -> IO UINT) -> UINT -> IO WindowsString Source #

trySized :: String -> (LPTSTR -> CInt -> IO CInt) -> IO WindowsString Source #

Support for API calls that return the required size, in characters including a null character, of the buffer when passed a buffer size of zero.

maybePtr :: Maybe (Ptr a) -> Ptr a Source #

ptrToMaybe :: Ptr a -> Maybe (Ptr a) Source #

maybeNum :: Num a => Maybe a -> a Source #

numToMaybe :: (Eq a, Num a) => a -> Maybe a Source #

try' :: Storable a => String -> (Ptr a -> PDWORD -> IO BOOL) -> DWORD -> IO [a] Source #

peekMaybe :: Storable a => Ptr a -> IO (Maybe a) Source #