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- TABLE OF CONTENTS
-
- asl.library/AllocAslRequest
- asl.library/AllocFileRequest
- asl.library/AslRequest
- asl.library/FreeAslRequest
- asl.library/FreeFileRequest
- asl.library/RequestFile
-
-
- asl.library/AllocAslRequest asl.library/AllocAslRequest
-
- NAME
- AllocAslRequest -- alloc an ASL requester, with TagItem modifiers (V36)
-
- SYNOPSIS
- request = AllocAslRequest( type, ptags )
- D0 D0 A0
-
- APTR request;
- ulong type;
- struct TagItem *ptags;
-
- FUNCTION
- Allocates an ASL requester data structure of the specified type,
- with optional TagItem modifiers.
-
- INPUTS
- type = type of requester to create. Currently defined types
- include ASL_FileRequest and ASL_FontRequest.
- ptags = pointer to a tagitem array, which is defined for each
- specified type. See "asl.h" and example programs for usage
- of various tag types. See AslRequest() for specifications
- of currently defined tag values and their effects.
-
- Note that tag values stay in effect for each use of the
- requester until they are cleared or modified by passing the
- same tag with a new value.
-
- AllocAslRequestTags( type, tags... ) which accepts your tags
- on the stack, is available in amiga.lib.
-
- Example Usage: AllocAslRequestTags( ASL_FileRequest,
- ASL_Hail, "My Title Bar",
- TAG_DONE );
-
- RESULT
- Pointer to an initialized requester data structure, or NULL on
- failure. The data structure returned will match the requested
- type; for type ASL_FileRequest, a struct FileRequester *; for
- ASL_FontRequest, a struct FontRequester *.
-
- The requester returned may then be passed to AslRequest(), and
- is freed by calling FreeAslRequest().
-
- SEE ALSO
- AslRequest(), FreeAslRequest()
-
-
- asl.library/AllocFileRequest asl.library/AllocFileRequest
-
- NAME
- AllocFileRequest -- allocates a FileRequester structure (V36)
-
- SYNOPSIS
- request = AllocFileRequest()
- D0
-
- struct FileRequester *request;
-
- FUNCTION
- Creates and initializes the data structure required to pass to the
- RequestFile() function.
-
- INPUTS
- None. If you wish to get other than default values, you can use
- AllocAslRequest() to set up a file request with tag items.
-
- RESULT
- Pointer to a struct FileRequester, which is to be passed to the
- RequestFile() function.
-
- The returned FileRequester pointer has public fields which are
- readable by the application as defined in aslbase.h.
-
- CAUTION
- The application MUST use either the AllocFileRequest(), or
- AllocAslRequest(), function to allocate the structure to be passed to
- the FileRequest() or AslRequest() functions; it is not possible to
- create a struct FileRequest except through the library calls.
-
- Also, any modifications MUST be done through TagItem values, rather
- than directly modifying, unless explicitly documented otherwise.
-
- SEE ALSO
- RequestFile(), FreeAslRequest(), AslRequest()
-
-
- asl.library/AslRequest asl.library/AslRequest
-
- NAME
- AslRequest -- get input from user for an ASL requester (V36)
-
- SYNOPSIS
- BOOL result = AslRequest( request, ptags );
- D0 A0 A1
-
- BOOL result;
- APTR request;
- struct TagItem *ptags;
-
- FUNCTION
- Prompts the user for input, based on the specific type of
- requester and modifying tagitems. The actions and results
- are specific to the type but in general the action is to open
- a requesting window prompting the user for a specific input.
- If the user cancels or the system aborts the request, NULL
- is returned, otherwise the request data structure readable
- data reflects the user input.
- Note that tag values stay in effect for each use of the
- requester until they are cleared or modified by passing the
- same tag with a new value.
-
- INPUTS
- request = requester structure allocated with AllocAslRequest().
- ptags = pointer to an array of TagItems which may be used to
- modify the requester.
-
- AslRequestTags( type, tags... ) which accepts your tags
- on the stack, is available in amiga.lib.
-
- Example Usage: AslRequestTags( ASL_FileRequest,
- ASL_Hail, "My Title Bar",
- TAG_DONE );
-
- TAGS
-
- ( REMEMBER - ALL DATA STRUCTURES ARE READ-ONLY EXCEPT BY USING
- TAGITEMS !!! )
-
- ASL_Hail (STRPTR) - Hailing text to prompt user, typically
- displayed in window title bar.
- ASL_Window (struct Window *) - Parent window for the request
- function, which is used to select the screen on which the
- requesting window will be displayed and also is used for
- a shared IDCMP port.
-
- ASL_LeftEdge (WORD) - Preferred display position for left edge where
- request window should open.
- ASL_TopEdge (WORD) - Preferred top edge of request window.
- ASL_Width (WORD) - Preferred width of request window.
- ASL_Height (WORD) - Preferred height of request window.
-
- ASL_HookFunc (APTR) - Pointer to callback function, specific to
- each AslRequest type.
-
- ASL_File (STRPTR) - FileRequester initial filename string.
- ASL_Dir (STRPTR) - FileRequester initial directory path string.
-
- ASL_FontName (STRPTR) - FontRequester initial fontname string.
- ASL_FontHeight (UWORD) - FontRequester initial height (ta_YSize).
- ASL_FontStyles (UBYTE) - FontRequester initial styles (ta_Style).
- ASL_FontFlags (UBYTE) - FontRequester initial flags (ta_Flags).
- ASL_FrontPen (BYTE) - FontRequester front pen color (fo_FrontPen).
- ASL_BackPen (BYTE) - FontRequester back pen color (fo_BackPen).
- ASL_MinHeight (UWORD) - Minimum height for FontRequester display
- of font sizes. (Application must check return value).
- ASL_MaxHeight (UWORD) - Maximum height for FontRequester display
- of font sizes. (Application must check ta_YSize returned).
-
- ASL_OKText (STRPTR) - Replacement for default "OK" gadget text.
- ( Limited to approx. six characters ).
- ASL_CancelText (STRPTR) - Replacement for default "CANCEL"
- gadget text. ( Limited to approx. six characters ).
-
- ASL_FuncFlags (ULONG) - Function flags, depends on requester
- type. Example: FILF_SAVE for FileRequester.
- ASL_ExtFlags1 (ULONG) - Extended flags (to pass FILF1_ bitdefs)
- Example: FIL1F_NOFILES for file requester
-
- RESULT
- If NULL, typically the user cancelled the requester or a system
- failure prevented the requester from being opened. If non-zero,
- values will be set depending on the particular type of request,
- in the requesting data structure. See "libraries/asl.h" for
- information on the READ-ONLY fields in each specific type of
- requester.
-
- NOTES
-
- Asl provides a way for applications to interact with requester
- operation via a callback (hook) function. For the ASL file and
- font requesters, there are two ASL_FuncFlags to specify that you
- want a callback:
-
- for FileRequester: FILF_DOWILDFUNC and FILF_DOMSGFUNC
- for FontRequester: FONF_DOWILDFUNC and FONF_DOMSGFUNC
-
- The DOWILDFUNC allows you to perform the pattern matching.
- The DOMSGFUNC allows you to handle IDCMP messages received
- for windows that are sharing a UserPort with the requester.
-
- If you set one or both of these flags via the ASL_FuncFlags
- tagitem, you must provide a pointer to your hook function
- using the ASL_HookFunc tagitem. Your function will be called
- as follows:
-
- ULONG rf_Function(ULONG Mask, CPTR Object, CPTR AslRequester)
-
- The Mask value is a copy of the specific ASL_FuncFlag value
- the callback is for. Object is a pointer to a data object
- specific to the reason for the callback (defined by Mask).
- AslRequester is a pointer to the requester structure.
-
- Note that you can only define one HookFunc per requester.
- Your hook function must examine the Mask passed to it to
- determine what the callback is for and what the Object is.
-
- The following table will explain what is passed to, and
- expected to be returned by a hook functions for various masks:
-
- FileRequester DOWILDFUNC
- Purpose: to accept or reject individual files for display list
- Inputs: Mask = FILF_DOWILDFUNC
- Object = struct AnchorPath *
- AslRequester = struct FileRequester *
- Result: You return zero to accept file for display in list
-
-
- FontRequester DOWILDFUNC
- Purpose: to accept or reject individual fonts for display list
- Inputs: Mask = FONF_DOWILDFUNC
- Object = struct TextAttr *
- AslRequester = struct FontRequester *
- Result: You return non-zero to accept font for display in list
-
-
- FileRequester (or FontRequester) DOMSGFUNC
- Purpose: to handle IDCMP msgs for other windows sharing port
- Inputs: Mask = FILF_DOMSGFUNC (FONF_DOMSGFUNC)
- Object = struct IntuiMessage *
- AslRequester = struct FileRequester (FontRequester) *
- Result: You must return the Object pointer (asl will Reply the Object)
-
- SEE ALSO
- AllocAslRequest(), FreeAslRequest()
-
-
- asl.library/FreeAslRequest asl.library/FreeAslRequest
-
- NAME
- FreeAslRequest - frees requester obtained from AllocAslRequest (V36)
-
- SYNOPSIS
- FreeAslRequest( request )
- A0
-
- APTR request;
-
- FUNCTION
- FreeAslRequest() is used to free the structure returned by
- AllocAslRequest() or AllocFileRequest(), in order to free
- all resources associated with that requester after the
- application has completed all use of the data structures.
-
- INPUTS
- request - value returned from AllocAslRequest() or
- AllocFileRequest().
-
- RESULT
- None. All resources associated with the request will be
- freed.
-
- SEE ALSO
- AllocAslRequest(), AslRequest(), AllocFileRequest()
-
-
- asl.library/FreeFileRequest asl.library/FreeFileRequest
-
- NAME
- FreeFileRequest -- frees requester allocated by AllocFileRequest (V36)
-
- SYNOPSIS
- FreeFileRequest( request )
- A0
-
- struct FileRequester *request;
-
- FUNCTION
- This function is identical to the FreeAslRequest() function, but is
- documented for source code compatability and ease of use.
- Applications may use either FreeAslRequest() or FreeFileRequest() to
- free the data structures allocated by AllocFileRequest().
-
- INPUTS
- request = the return value from AllocFileRequest().
-
- SEE ALSO
- FreeAslRequest()
-
- asl.library/RequestFile asl.library/RequestFile
-
- NAME
- RequestFile -- request user to select file(s) (V36)
-
- SYNOPSIS
- BOOL result = RequestFile( request )
- D0 A0
-
- BOOL result;
- struct FileRequester *request;
-
- FUNCTION
- RequestFile() displays a file requester and waits for the user to
- select filenames or cancel the request. This function is identical
- to the AslRequest() function, except that there is no TagList to
- modify the settings for the requester. See AslRequest() for details.
-
- INPUT
- request = struct FileRequester * returned by AllocFileRequest().
-
- RESULT
- result - See AslRequest() result. NULL indicates cancelled.
-
- SEE ALSO
- AllocFileRequest(), FreeFileRequest(), AslRequest()
-
-
-
-