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1 | \section{\class{wxButton}}\label{wxbutton} | |
2 | ||
3 | A button is a control that contains a text string, | |
4 | and is one of the commonest elements of a GUI. It may be placed on a | |
5 | \rtfsp\helpref{dialog box}{wxdialog} or \helpref{panel}{wxpanel}, or indeed | |
6 | almost any other window. | |
7 | ||
8 | \wxheading{Derived from} | |
9 | ||
10 | \helpref{wxControl}{wxcontrol}\\ | |
11 | \helpref{wxWindow}{wxwindow}\\ | |
12 | \helpref{wxEvtHandler}{wxevthandler}\\ | |
13 | \helpref{wxObject}{wxobject} | |
14 | ||
15 | \wxheading{Include files} | |
16 | ||
17 | <wx/button.h> | |
18 | ||
19 | \wxheading{Window styles} | |
20 | ||
21 | \twocolwidtha{5cm}% | |
22 | \begin{twocollist}\itemsep=0pt | |
23 | \twocolitem{\windowstyle{wxBU\_LEFT}}{Left-justifies the label. WIN32 only.} | |
24 | \twocolitem{\windowstyle{wxBU\_TOP}}{Aligns the label to the top of the button. WIN32 only.} | |
25 | \twocolitem{\windowstyle{wxBU\_RIGHT}}{Right-justifies the bitmap label. WIN32 only.} | |
26 | \twocolitem{\windowstyle{wxBU\_BOTTOM}}{Aligns the label to the bottom of the button. WIN32 only.} | |
27 | \twocolitem{\windowstyle{wxBU\_EXACTFIT}}{Creates the button as small as possible instead of making it of the standard size (which is the default behaviour ).} | |
28 | \end{twocollist} | |
29 | ||
30 | See also \helpref{window styles overview}{windowstyles}. | |
31 | ||
32 | \wxheading{Event handling} | |
33 | ||
34 | \twocolwidtha{7cm}% | |
35 | \begin{twocollist}\itemsep=0pt | |
36 | \twocolitem{{\bf EVT\_BUTTON(id, func)}}{Process a wxEVT\_COMMAND\_BUTTON\_CLICKED event, | |
37 | when the button is clicked.} | |
38 | \end{twocollist} | |
39 | ||
40 | \wxheading{See also} | |
41 | ||
42 | \helpref{wxBitmapButton}{wxbitmapbutton} | |
43 | ||
44 | \latexignore{\rtfignore{\wxheading{Members}}} | |
45 | ||
46 | \membersection{wxButton::wxButton}\label{wxbuttonconstr} | |
47 | ||
48 | \func{}{wxButton}{\void} | |
49 | ||
50 | Default constructor. | |
51 | ||
52 | \func{}{wxButton}{\param{wxWindow* }{parent}, \param{wxWindowID}{ id}, \param{const wxString\& }{label},\rtfsp | |
53 | \param{const wxPoint\& }{pos}, \param{const wxSize\& }{size = wxDefaultSize},\rtfsp | |
54 | \param{long}{ style = 0}, \param{const wxValidator\& }{validator}, \param{const wxString\& }{name = ``button"}} | |
55 | ||
56 | Constructor, creating and showing a button. | |
57 | ||
58 | \wxheading{Parameters} | |
59 | ||
60 | \docparam{parent}{Parent window. Must not be NULL.} | |
61 | ||
62 | \docparam{id}{Button identifier. A value of -1 indicates a default value.} | |
63 | ||
64 | \docparam{label}{Text to be displayed on the button.} | |
65 | ||
66 | \docparam{pos}{Button position.} | |
67 | ||
68 | \docparam{size}{Button size. If the default size (-1, -1) is specified then the button is sized | |
69 | appropriately for the text.} | |
70 | ||
71 | \docparam{style}{Window style. See \helpref{wxButton}{wxbutton}.} | |
72 | ||
73 | \docparam{validator}{Window validator.} | |
74 | ||
75 | \docparam{name}{Window name.} | |
76 | ||
77 | \wxheading{See also} | |
78 | ||
79 | \helpref{wxButton::Create}{wxbuttoncreate}, \helpref{wxValidator}{wxvalidator} | |
80 | ||
81 | \membersection{wxButton::\destruct{wxButton}} | |
82 | ||
83 | \func{}{\destruct{wxButton}}{\void} | |
84 | ||
85 | Destructor, destroying the button. | |
86 | ||
87 | \membersection{wxButton::Create}\label{wxbuttoncreate} | |
88 | ||
89 | \func{bool}{Create}{\param{wxWindow* }{parent}, \param{wxWindowID}{ id}, \param{const wxString\& }{label},\rtfsp | |
90 | \param{const wxPoint\& }{pos}, \param{const wxSize\& }{size = wxDefaultSize},\rtfsp | |
91 | \param{long}{ style = 0}, \param{const wxValidator\& }{validator}, \param{const wxString\& }{name = ``button"}} | |
92 | ||
93 | Button creation function for two-step creation. For more details, see \helpref{wxButton::wxButton}{wxbuttonconstr}. | |
94 | ||
95 | \membersection{wxButton::GetLabel}\label{wxbuttongetlabel} | |
96 | ||
97 | \constfunc{wxString}{GetLabel}{\void} | |
98 | ||
99 | Returns the string label for the button. | |
100 | ||
101 | \wxheading{Return value} | |
102 | ||
103 | The button's label. | |
104 | ||
105 | \wxheading{See also} | |
106 | ||
107 | \helpref{wxButton::SetLabel}{wxbuttonsetlabel} | |
108 | ||
109 | \membersection{wxButton::GetDefaultSize}\label{wxbuttongetdefaultsize} | |
110 | ||
111 | \func{wxSize}{GetDefaultSize}{\void} | |
112 | ||
113 | Returns the default size for the buttons. It is advised to make all the dialog | |
114 | buttons of the same size and this function allows to retrieve the (platform and | |
115 | current font dependent size) which should be the best suited for this. | |
116 | ||
117 | \membersection{wxButton::SetDefault}\label{wxbuttonsetdefault} | |
118 | ||
119 | \func{void}{SetDefault}{\void} | |
120 | ||
121 | This sets the button to be the default item for the panel or dialog | |
122 | box. | |
123 | ||
124 | \wxheading{Remarks} | |
125 | ||
126 | Under Windows, only dialog box buttons respond to this function. As | |
127 | normal under Windows and Motif, pressing return causes the default button to | |
128 | be depressed when the return key is pressed. See also \helpref{wxWindow::SetFocus}{wxwindowsetfocus}\rtfsp | |
129 | which sets the keyboard focus for windows and text panel items,\rtfsp | |
130 | and \helpref{wxPanel::SetDefaultItem}{wxpanelsetdefaultitem}. | |
131 | ||
132 | Note that under Motif, calling this function immediately after | |
133 | creation of a button and before the creation of other buttons | |
134 | will cause misalignment of the row of buttons, since default | |
135 | buttons are larger. To get around this, call {\it SetDefault}\rtfsp | |
136 | after you have created a row of buttons: wxWindows will | |
137 | then set the size of all buttons currently on the panel to | |
138 | the same size. | |
139 | ||
140 | \membersection{wxButton::SetLabel}\label{wxbuttonsetlabel} | |
141 | ||
142 | \func{void}{SetLabel}{\param{const wxString\& }{label}} | |
143 | ||
144 | Sets the string label for the button. | |
145 | ||
146 | \wxheading{Parameters} | |
147 | ||
148 | \docparam{label}{The label to set.} | |
149 | ||
150 | \wxheading{See also} | |
151 | ||
152 | \helpref{wxButton::GetLabel}{wxbuttongetlabel} | |
153 |