Safe Haskell	None
Language	GHC2021

SDL3.Sys.Bindgen.Hints.Unsafe

Synopsis

sDL_SetHintWithPriority :: PtrConst CChar -> PtrConst CChar -> SDL_HintPriority -> IO CBool
sDL_SetHint :: PtrConst CChar -> PtrConst CChar -> IO CBool
sDL_ResetHint :: PtrConst CChar -> IO CBool
sDL_ResetHints :: IO ()
sDL_GetHint :: PtrConst CChar -> IO (PtrConst CChar)
sDL_GetHintBoolean :: PtrConst CChar -> CBool -> IO CBool
sDL_AddHintCallback :: PtrConst CChar -> SDL_HintCallback -> Ptr Void -> IO CBool
sDL_RemoveHintCallback :: PtrConst CChar -> SDL_HintCallback -> Ptr Void -> IO ()

Documentation

sDL_SetHintWithPriority Source #

Arguments

:: PtrConst CChar	`name` the hint to set.
-> PtrConst CChar	`value` the value of the hint variable.
-> SDL_HintPriority	`priority` the `SDL_HintPriority` level for the hint.
-> IO CBool

Set a hint with a specific priority.

The priority controls the behavior when setting a hint that already has a value. Hints will replace existing hints of their priority and lower. Environment variables are considered to have override priority.

Returns: true on success or false on failure; call SDL_GetError() for more information.
Thread safety: It is safe to call this function from any thread.
See also: sDL_GetHint, sDL_ResetHint, sDL_SetHint
C declaration: SDL_SetHintWithPriority, defined at SDL3/SDL_hints.h 4870:34

Since: 3.2.0

sDL_SetHint Source #

Arguments

:: PtrConst CChar	`name` the hint to set.
-> PtrConst CChar	`value` the value of the hint variable.
-> IO CBool

Set a hint with normal priority.

Hints will not be set if there is an existing override hint or environment variable that takes precedence. You can use SDL_SetHintWithPriority() to set the hint with override priority instead.

Returns: true on success or false on failure; call SDL_GetError() for more information.
Thread safety: It is safe to call this function from any thread.
See also: sDL_GetHint, sDL_ResetHint, sDL_SetHintWithPriority
C declaration: SDL_SetHint, defined at SDL3/SDL_hints.h 4892:34

Since: 3.2.0

sDL_ResetHint Source #

Arguments

:: PtrConst CChar	`name` the hint to set.
-> IO CBool

Reset a hint to the default value.

This will reset a hint to the value of the environment variable, or NULL if the environment isn't set. Callbacks will be called normally with this change.

Returns: true on success or false on failure; call SDL_GetError() for more information.
Thread safety: It is safe to call this function from any thread.
See also: sDL_SetHint, sDL_ResetHints
C declaration: SDL_ResetHint, defined at SDL3/SDL_hints.h 4912:34

Since: 3.2.0

sDL_ResetHints :: IO () Source #

Reset all hints to the default values.

This will reset all hints to the value of the associated environment variable, or NULL if the environment isn't set. Callbacks will be called normally with this change.

Thread safety: It is safe to call this function from any thread.
See also: sDL_ResetHint
C declaration: SDL_ResetHints, defined at SDL3/SDL_hints.h 4927:34

Since: 3.2.0

sDL_GetHint Source #

Arguments

:: PtrConst CChar	`name` the hint to query.
-> IO (PtrConst CChar)

Get the value of a hint.

Returns: the string value of a hint or NULL if the hint isn't set.
Thread safety: It is safe to call this function from any thread.
See also: sDL_SetHint, sDL_SetHintWithPriority
C declaration: SDL_GetHint, defined at SDL3/SDL_hints.h 4942:41

Since: 3.2.0

sDL_GetHintBoolean Source #

Arguments

:: PtrConst CChar	`name` the name of the hint to get the boolean value from.
-> CBool	`default_value` the value to return if the hint does not exist.
-> IO CBool

Get the boolean value of a hint variable.

Returns: the boolean value of a hint or the provided default value if the hint does not exist.
Thread safety: It is safe to call this function from any thread.
See also: sDL_GetHint, sDL_SetHint
C declaration: SDL_GetHintBoolean, defined at SDL3/SDL_hints.h 4959:34

Since: 3.2.0

sDL_AddHintCallback Source #

Arguments

:: PtrConst CChar	`name` the hint to watch.
-> SDL_HintCallback	`callback` An `SDL_HintCallback` function that will be called when the hint value changes.
-> Ptr Void	`userdata` a pointer to pass to the callback function.
-> IO CBool

Add a function to watch a particular hint.

The callback function is called during this function, to provide it an initial value, and again each time the hint's value changes.

Returns: true on success or false on failure; call SDL_GetError() for more information.
Thread safety: It is safe to call this function from any thread.
See also: sDL_RemoveHintCallback
C declaration: SDL_AddHintCallback, defined at SDL3/SDL_hints.h 5002:34

Since: 3.2.0

sDL_RemoveHintCallback Source #

Arguments

:: PtrConst CChar	`name` the hint being watched.
-> SDL_HintCallback	`callback` an `SDL_HintCallback` function that will be called when the hint value changes.
-> Ptr Void	`userdata` a pointer being passed to the callback function.
-> IO ()

Remove a function watching a particular hint.

Thread safety: It is safe to call this function from any thread.
See also: sDL_AddHintCallback
C declaration: SDL_RemoveHintCallback, defined at SDL3/SDL_hints.h 5018:34

Since: 3.2.0