1wx(3)                      Erlang Module Definition                      wx(3)
2
3
4

NAME

6       wx - A port of wxWidgets.
7

DESCRIPTION

9       A port of wxWidgets.
10
11       This  is  the base api of wxWidgets. This module contains functions for
12       starting and stopping the wx-server, as well  as  other  utility  func‐
13       tions.
14
15       wxWidgets  is  object oriented, and not functional. Thus, in wxErlang a
16       module represents a class, and the object created by this class has  an
17       own  type,  wxCLASS().  This  module represents the base class, and all
18       other wxMODULE's are sub-classes of this class.
19
20       Objects of a class are created with wxCLASS:new(...) and destroyed with
21       wxCLASS:destroy().  Member functions are called with wxCLASS:member(Ob‐
22       ject, ...) instead of as in C++ Object.member(...).
23
24       Sub class modules inherit (non static) functions  from  their  parents.
25       The inherited functions are not documented in the sub-classes.
26
27       This erlang port of wxWidgets tries to be a one-to-one mapping with the
28       original wxWidgets library. Some things are different  though,  as  the
29       optional arguments use property lists and can be in any order. The main
30       difference is the event handling which is different from  the  original
31       library. See wxEvtHandler.
32
33       The following classes are implemented directly as erlang types:
34       wxPoint={x,y},wxSize={w,h},wxRect={x,y,w,h},wxColour={r,g,b      [,a]},
35       wxString=unicode:chardata(),    wxGBPosition={r,c},wxGBSpan={rs,cs},wx‐
36       GridCellCoords={r,c}.
37
38       wxWidgets  uses  a  process  specific  environment, which is created by
39       wx:new/0. To be able to use the environment from other processes,  call
40       get_env/0 to retrieve the environment and set_env/1 to assign the envi‐
41       ronment in the other process.
42
43       Global (classless) functions are located in the wx_misc module.
44

DATA TYPES

46         wx_colour() = {R::byte(), G::byte(), B::byte()} | wx_colour4():
47
48
49         wx_colour4() = {R::byte(), G::byte(), B::byte(), A::byte()}:
50
51
52         wx_datetime() = {{Year::integer(), Month::integer(), Day::integer()},
53         {Hour::integer(), Minute::integer(), Second::integer()}}:
54
55
56           In Local Timezone
57
58         wx_enum() = integer():
59
60
61           Constant defined in wx.hrl
62
63         wx_env() = #wx_env{}:
64
65
66           Opaque process environment
67
68         wx_memory() = binary() | #wx_mem{}:
69
70
71           Opaque memory reference
72
73         wx_object() = #wx_ref{}:
74
75
76           Opaque object reference
77
78         wx_wxHtmlLinkInfo()  =  #wxHtmlLinkInfo{href=unicode:chardata(), tar‐
79         get=unicode:chardata()}:
80
81
82         wx_wxMouseState()  =  #wxMouseState{x=integer(),  y=integer(),  left‐
83         Down=boolean(),   middleDown=boolean(),   rightDown=boolean(),   con‐
84         trolDown=boolean(),  shiftDown=boolean(),  altDown=boolean(),  metaD‐
85         own=boolean(), cmdDown=boolean()}:
86
87
88           See #wxMouseState{} defined in wx.hrl
89

EXPORTS

91       parent_class(X1) -> term()
92
93       new() -> wx_object()
94
95              Starts a wx server.
96
97       new(Options::[Option]) -> wx_object()
98
99              Types:
100
101                 Option = {debug, list() | atom()} | {silent_start, boolean()}
102
103              Starts  a  wx server. Option may be {debug, Level}, see debug/1.
104              Or {silent_start, Bool}, which causes error messages at  startup
105              to  be  suppressed.  The  latter can be used as a silent test of
106              whether wx is properly installed or not.
107
108       destroy() -> ok
109
110              Stops a wx server.
111
112       get_env() -> wx_env()
113
114              Gets this process's current wx environment. Can be sent to other
115              processes to allow them use this process wx environment.
116
117              See also: set_env/1.
118
119       set_env(Wx_env::wx_env()) -> ok
120
121              Sets  the process wx environment, allows this process to use an‐
122              other process wx environment.
123
124       subscribe_events() -> ok
125
126              Adds the calling process to the list of of  processes  that  are
127              listening to wx application events.
128
129              At the moment these are all MacOSX specific events corresponding
130              to MacNewFile() and friends from wxWidgets wxApp:
131
132                * {new_file, ""}
133
134                * {open_file, Filename}
135
136                * {print_file, Filename}
137
138                * {open_url, Url}
139
140                * {reopen_app, ""}
141
142              The call always returns ok but will have sent  any  already  re‐
143              ceived events to the calling process.
144
145       null() -> wx_object()
146
147              Returns the null object
148
149       is_null(Wx_ref::wx_object()) -> boolean()
150
151              Returns true if object is null, false otherwise
152
153       equal(Wx_ref::wx_object(), X2::wx_object()) -> boolean()
154
155              Returns true if both arguments references the same object, false
156              otherwise
157
158       getObjectType(Wx_ref::wx_object()) -> atom()
159
160              Returns the object type
161
162       typeCast(Old::wx_object(), NewType::atom()) -> wx_object()
163
164              Casts the object to class NewType. It is needed when using func‐
165              tions  like wxWindow:findWindow/2, which returns a generic wxOb‐
166              ject type.
167
168       batch(Fun::function()) -> term()
169
170              Batches all wx commands used in the fun. Improves performance of
171              the  command processing by grabbing the wxWidgets thread so that
172              no event processing will be done before the  complete  batch  of
173              commands is invoked.
174
175              See also: foldl/3, foldr/3, foreach/2, map/2.
176
177       foreach(Fun::function(), List::list()) -> ok
178
179              Behaves  like  lists:foreach/2  but  batches  wx  commands.  See
180              batch/1.
181
182       map(Fun::function(), List::list()) -> list()
183
184              Behaves like lists:map/2 but batches wx commands. See batch/1.
185
186       foldl(Fun::function(), Acc::term(), List::list()) -> term()
187
188              Behaves like lists:foldl/3 but batches wx commands. See batch/1.
189
190       foldr(Fun::function(), Acc::term(), List::list()) -> term()
191
192              Behaves like lists:foldr/3 but batches wx commands. See batch/1.
193
194       create_memory(Size::integer()) -> wx_memory()
195
196              Creates a memory area (of Size in bytes) which can be used by an
197              external library (i.e. opengl). It is up to the client to keep a
198              reference to this object so it does not get garbage collected by
199              erlang while still in use by the external library.
200
201              This  is  far  from erlang's intentional usage and can crash the
202              erlang emulator. Use it carefully.
203
204       get_memory_bin(Wx_mem::wx_memory()) -> binary()
205
206              Returns the memory area as a binary.
207
208       retain_memory(Wx_mem::wx_memory()) -> ok
209
210              Saves the memory from deletion until release_memory/1 is called.
211              If release_memory/1 is not called the memory will not be garbage
212              collected.
213
214       release_memory(Wx_mem::wx_memory()) -> ok
215
216       debug(Debug::Level | [Level]) -> ok
217
218              Types:
219
220                 Level = none | verbose | trace | driver | integer()
221
222              Sets debug level. If debug level is 'verbose'  or  'trace'  each
223              call  is printed on console. If Level is 'driver' each allocated
224              object and deletion is printed on the console.
225
226       demo() -> ok | {error, atom()}
227
228              Starts a wxErlang demo if examples directory exists and is  com‐
229              piled
230

AUTHORS

232       <>
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236                                   wx 2.2.2                              wx(3)