1wxDialog(3) Erlang Module Definition wxDialog(3)
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6 wxDialog - Functions for wxDialog class
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9 A dialog box is a window with a title bar and sometimes a system menu,
10 which can be moved around the screen. It can contain controls and other
11 windows and is often used to allow the user to make some choice or to
12 answer a question.
13 Dialogs can be made scrollable, automatically, for computers with low
15 resolution screens: please see overview_dialog_autoscrolling for fur‐
16 ther details.
17 Dialogs usually contain either a single button allowing to close the
19 dialog or two buttons, one accepting the changes and the other one dis‐
20 carding them (such button, if present, is automatically activated if
21 the user presses the "Esc" key). By default, buttons with the standard
22 wxID_OK and wxID_CANCEL identifiers behave as expected. Starting with
23 wxWidgets 2.7 it is also possible to use a button with a different
24 identifier instead, see setAffirmativeId/2 and SetEscapeId() (not im‐
25 plemented in wx).
26 Also notice that the createButtonSizer/2 should be used to create the
28 buttons appropriate for the current platform and positioned correctly
29 (including their order which is platform-dependent).
30 Modal and Modeless
32 There are two kinds of dialog, modal and modeless. A modal dialog
34 blocks program flow and user input on other windows until it is dis‐
35 missed, whereas a modeless dialog behaves more like a frame in that
36 program flow continues, and input in other windows is still possible.
37 To show a modal dialog you should use the showModal/1 method while to
38 show a dialog modelessly you simply use show/2, just as with frames.
39 Note that the modal dialog is one of the very few examples of wxWindow-
41 derived objects which may be created on the stack and not on the heap.
42 In other words, while most windows would be created like this:
43 You can achieve the same result with dialogs by using simpler code:
45 An application can define a wxCloseEvent handler for the dialog to re‐
47 spond to system close events.
48 Styles
50 This class supports the following styles:
52 See: Overview dialog, wxFrame, Overview validator
54 This class is derived (and can use functions) from: wxTopLevelWindow
56 wxWindow wxEvtHandler
57 wxWidgets docs: wxDialog
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61 Event types emitted from this class: close_window, init_dialog
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64 wxDialog() = wx:wx_object()
65
67 new() -> wxDialog()
68 Default constructor.
70 new(Parent, Id, Title) -> wxDialog()
72 Types:
74 Parent = wxWindow:wxWindow()
76 Id = integer()
77 Title = unicode:chardata()
78 new(Parent, Id, Title, Options :: [Option]) -> wxDialog()
80 Types:
82 Parent = wxWindow:wxWindow()
84 Id = integer()
85 Title = unicode:chardata()
86 Option =
87 {pos, {X :: integer(), Y :: integer()}} |
88 {size, {W :: integer(), H :: integer()}} |
89 {style, integer()}
90 Constructor.
92 See: create/5
94 destroy(This :: wxDialog()) -> ok
96 Destructor.
98 Deletes any child windows before deleting the physical window.
100 See overview_windowdeletion for more info.
102 create(This, Parent, Id, Title) -> boolean()
104 Types:
106 This = wxDialog()
108 Parent = wxWindow:wxWindow()
109 Id = integer()
110 Title = unicode:chardata()
111 create(This, Parent, Id, Title, Options :: [Option]) -> boolean()
113 Types:
115 This = wxDialog()
117 Parent = wxWindow:wxWindow()
118 Id = integer()
119 Title = unicode:chardata()
120 Option =
121 {pos, {X :: integer(), Y :: integer()}} |
122 {size, {W :: integer(), H :: integer()}} |
123 {style, integer()}
124 Used for two-step dialog box construction.
126 See: new/4
128 createButtonSizer(This, Flags) -> wxSizer:wxSizer()
130 Types:
132 This = wxDialog()
134 Flags = integer()
135 Creates a sizer with standard buttons.
137 flags is a bit list of the following flags: wxOK, wxCANCEL,
139 wxYES, wxNO, wxAPPLY, wxCLOSE, wxHELP, wxNO_DEFAULT.
140 The sizer lays out the buttons in a manner appropriate to the
142 platform.
143 This function uses createStdDialogButtonSizer/2 internally for
145 most platforms but doesn't create the sizer at all for the plat‐
146 forms with hardware buttons (such as smartphones) for which it
147 sets up the hardware buttons appropriately and returns NULL, so
148 don't forget to test that the return value is valid before using
149 it.
150 createStdDialogButtonSizer(This, Flags) ->
152 wxStdDialogButtonSizer:wxStdDialogButtonSizer()
153 Types:
155 This = wxDialog()
157 Flags = integer()
158 Creates a wxStdDialogButtonSizer with standard buttons.
160 flags is a bit list of the following flags: wxOK, wxCANCEL,
162 wxYES, wxNO, wxAPPLY, wxCLOSE, wxHELP, wxNO_DEFAULT.
163 The sizer lays out the buttons in a manner appropriate to the
165 platform.
166 endModal(This, RetCode) -> ok
168 Types:
170 This = wxDialog()
172 RetCode = integer()
173 Ends a modal dialog, passing a value to be returned from the
175 showModal/1 invocation.
176 See: showModal/1, getReturnCode/1, setReturnCode/2
178 getAffirmativeId(This) -> integer()
180 Types:
182 This = wxDialog()
184 Gets the identifier of the button which works like standard OK
186 button in this dialog.
187 See: setAffirmativeId/2
189 getReturnCode(This) -> integer()
191 Types:
193 This = wxDialog()
195 Gets the return code for this window.
197 Remark: A return code is normally associated with a modal dia‐
199 log, where showModal/1 returns a code to the application.
200 See: setReturnCode/2, showModal/1, endModal/2
202 isModal(This) -> boolean()
204 Types:
206 This = wxDialog()
208 Returns true if the dialog box is modal, false otherwise.
210 setAffirmativeId(This, Id) -> ok
212 Types:
214 This = wxDialog()
216 Id = integer()
217 Sets the identifier to be used as OK button.
219 When the button with this identifier is pressed, the dialog
221 calls wxWindow:validate/1 and wxWindow:transferDataFromWindow/1
222 and, if they both return true, closes the dialog with the affir‐
223 mative id return code.
224 Also, when the user presses a hardware OK button on the devices
226 having one or the special OK button in the PocketPC title bar,
227 an event with this id is generated.
228 By default, the affirmative id is wxID_OK.
230 See: getAffirmativeId/1, SetEscapeId() (not implemented in wx)
232 setReturnCode(This, RetCode) -> ok
234 Types:
236 This = wxDialog()
238 RetCode = integer()
239 Sets the return code for this window.
241 A return code is normally associated with a modal dialog, where
243 showModal/1 returns a code to the application. The function end‐
244 Modal/2 calls setReturnCode/2.
245 See: getReturnCode/1, showModal/1, endModal/2
247 show(This) -> boolean()
249 Types:
251 This = wxDialog()
253 show(This, Options :: [Option]) -> boolean()
255 Types:
257 This = wxDialog()
259 Option = {show, boolean()}
260 Hides or shows the dialog.
262 The preferred way of dismissing a modal dialog is to use end‐
264 Modal/2.
265 showModal(This) -> integer()
267 Types:
269 This = wxDialog()
271 Shows an application-modal dialog.
273 Program flow does not return until the dialog has been dismissed
275 with endModal/2.
276 Notice that it is possible to call showModal/1 for a dialog
278 which had been previously shown with show/2, this allows making
279 an existing modeless dialog modal. However showModal/1 can't be
280 called twice without intervening endModal/2 calls.
281 Note that this function creates a temporary event loop which
283 takes precedence over the application's main event loop (see wx‐
284 EventLoopBase (not implemented in wx)) and which is destroyed
285 when the dialog is dismissed. This also results in a call to
286 wxApp::ProcessPendingEvents() (not implemented in wx).
287 Return: The value set with setReturnCode/2.
289 See: ShowWindowModal() (not implemented in wx), ShowWindow‐
291 ModalThenDo() (not implemented in wx), endModal/2, getReturn‐
292 Code/1, setReturnCode/2
293wxWidgets team. wx 2.2.1 wxDialog(3)