interface/wx/msgdlg.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msgdlg.h
   3 // Purpose:     interface of wxMessageDialog
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxMessageDialog
  11
  12     This class represents a dialog that shows a single or multi-line message,
  13     with a choice of OK, Yes, No and Cancel buttons.
  14
  15     @library{wxcore}
  16     @category{cmndlg}
  17
  18     @see @ref overview_wxmessagedialogoverview "wxMessageDialog overview"
  19 */
  20 class wxMessageDialog : public wxDialog
  21 {
  22 public:
  23     /**
  24         Constructor specifying the message box properties.
  25
  26         Use ShowModal() to show the dialog.
  27
  28         @a style may be a bit list of the following identifiers:
  29
  30         @beginStyleTable
  31         @style{wxOK}
  32             Puts an Ok button in the message box. May be combined with @c
  33             wxCANCEL.
  34         @style{wxCANCEL}
  35             Puts a Cancel button in the message box. Must be combined with
  36             either @c wxOK or @c wxYES_NO.
  37         @style{wxYES_NO}
  38             Puts Yes and No buttons in the message box. May be combined with
  39             @c wxCANCEL.
  40         @style{wxNO_DEFAULT}
  41             Makes the "No" button default, can only be used with @c wxYES_NO.
  42         @style{wxCANCEL_DEFAULT}
  43             Makes the "Cancel" button default, can only be used with @c wxCANCEL
  44         @style{wxYES_DEFAULT}
  45             Makes the "Yes" button default, this is the default behaviour and
  46             this flag exists solely for symmetry with @c wxNO_DEFAULT.
  47         @style{wxOK_DEFAULT}
  48             Makes the "OK" button default, this is the default behaviour and
  49             this flag exists solely for symmetry with @c wxCANCEL_DEFAULT.
  50         @style{wxICON_EXCLAMATION}
  51             Displays an exclamation mark symbol.
  52         @style{wxICON_ERROR}
  53             Displays an error symbol.
  54         @style{wxICON_HAND}
  55             Displays an error symbol, this is a MSW-inspired synonym for @c
  56             wxICON_ERROR.
  57         @style{wxICON_QUESTION}
  58             Displays a question mark symbol. This icon is automatically used
  59             with @c wxYES_NO so it's usually unnecessary to specify it
  60             explicitly.
  61         @style{wxICON_INFORMATION}
  62             Displays an information symbol. This icon is used by default if @c
  63             wxYES_NO is not given so it is usually unnecessary to specify it
  64             explicitly.
  65         @style{wxSTAY_ON_TOP}
  66             Makes the message box stay on top of all other windows (currently
  67             implemented only under MSW).
  68         @endStyleTable
  69
  70         Notice that not all styles are compatible: only one of @c wxOK and @c
  71         wxYES_NO may be specified (and one of them must be specified) and at
  72         most one default button style can be used and it is only valid if the
  73         corresponding button is shown in the message box.
  74
  75         @param parent
  76             Parent window.
  77         @param message
  78             Message to show in the dialog.
  79         @param caption
  80             The dialog title.
  81         @param style
  82             Combination of style flags described above.
  83         @param pos
  84             Dialog position (ignored under MSW).
  85     */
  86     wxMessageDialog(wxWindow* parent, const wxString& message,
  87                     const wxString& caption = "Message box",
  88                     long style = wxOK | wxCENTRE,
  89                     const wxPoint& pos = wxDefaultPosition);
  90
  91     /**
  92         Sets the extended message for the dialog: this message is usually an
  93         extension of the short message specified in the constructor or set with
  94         SetMessage().
  95
  96         If it is set, the main message appears highlighted -- if supported --
  97         and this message appears beneath it in normal font. On the platforms
  98         which don't support extended messages, it is simply appended to the
  99         normal message with a new line separating them.
 100     */
 101     void SetExtendedMessage(const wxString extendedMessage);
 102
 103     /**
 104         Sets the message shown by the dialog.
 105     */
 106     void SetMessage(const wxString msg);
 107
 108     /**
 109         Overrides the default labels of the OK and Cancel buttons.
 110
 111         Please see the remarks in SetYesNoLabels() documentation.
 112     */
 113     virtual bool SetOKCancelLabels(const ButtonLabel& ok,
 114                                    const ButtonLabel& cancel);
 115
 116     /**
 117         Overrides the default label of the OK button.
 118
 119         Please see the remarks in SetYesNoLabels() documentation.
 120     */
 121     virtual bool SetOKLabel(const ButtonLabel& ok);
 122
 123     /**
 124         Overrides the default labels of the Yes, No and Cancel buttons.
 125
 126         Please see the remarks in SetYesNoLabels() documentation.
 127     */
 128     bool SetYesNoCancelLabels(const ButtonLabel& yes, const ButtonLabel& no,
 129                               const ButtonLabel& cancel);
 130
 131     /**
 132         Overrides the default labels of the Yes and No buttons.
 133
 134         The arguments of this function can be either strings or one of the
 135         standard identifiers, such as @c wxID_APPLY or @c wxID_OPEN. Notice
 136         that even if the label is specified as an identifier, the return value
 137         of the dialog ShowModal() method still remains one of @c wxID_OK, @c
 138         wxID_CANCEL, @c wxID_YES or @c wxID_NO values, i.e. this identifier
 139         changes only the label appearance but not the return code generated by
 140         the button. It is possible to mix stock identifiers and string labels
 141         in the same function call, for example:
 142         @code
 143         wxMessageDialog dlg(...);
 144         dlg.SetYesNoLabels(wxID_SAVE, _("&Don't save"));
 145         @endcode
 146
 147         Also notice that this function is not currently available on all
 148         platforms (although as of wxWidgets 2.9.0 it is implemented in all
 149         major ports), so it may return @false to indicate that the labels
 150         couldn't be changed. If it returns @true (currently only under wxMac),
 151         the labels were set successfully. Typically, if the function was used
 152         successfully, the main dialog message may need to be changed, e.g.:
 153         @code
 154         wxMessageDialog dlg(...);
 155         if ( dlg.SetYesNoLabels(_("&Quit"), _("&Don't quit")) )
 156             dlg.SetMessage(_("What do you want to do?"));
 157         else // buttons have standard "Yes"/"No" values, so rephrase the question
 158             dlg.SetMessage(_("Do you really want to quit?"));
 159         @endcode
 160     */
 161     virtual bool SetYesNoLabels(const ButtonLabel& yes, const ButtonLabel& no);
 162
 163     /**
 164         Shows the dialog, returning one of wxID_OK, wxID_CANCEL, wxID_YES,
 165         wxID_NO.
 166
 167         Notice that this method returns the identifier of the button which was
 168         clicked unlike wxMessageBox() function.
 169     */
 170     virtual int ShowModal();
 171 };
 172
 173
 174
 175 // ============================================================================
 176 // Global functions/macros
 177 // ============================================================================
 178
 179 /** @ingroup group_funcmacro_dialog */
 180 //@{
 181
 182 /**
 183     Show a general purpose message dialog.
 184
 185     This is a convenient function which is usually used instead of using
 186     wxMessageDialog directly. Notice however that some of the features, such as
 187     extended text and custom labels for the message box buttons, are not
 188     provided by this function but only by wxMessageDialog.
 189
 190     The return value is one of: @c wxYES, @c wxNO, @c wxCANCEL or @c wxOK
 191     (notice that this return value is @b different from the return value of
 192     wxMessageDialog::ShowModal()).
 193
 194     For example:
 195     @code
 196     int answer = wxMessageBox("Quit program?", "Confirm",
 197                               wxYES_NO | wxCANCEL, main_frame);
 198     if (answer == wxYES)
 199         main_frame->Close();
 200     @endcode
 201
 202     @a message may contain newline characters, in which case the message will
 203     be split into separate lines, to cater for large messages.
 204
 205     @param message
 206         Message to show in the dialog.
 207     @param caption
 208         The dialog title.
 209     @param parent
 210         Parent window.
 211     @param style
 212         Combination of style flags described in wxMessageDialog documentation.
 213     @param x
 214         Horizontal dialog position (ignored under MSW). Use @c wxDefaultCoord
 215         for @a x and @a y to let the system position the window.
 216     @param y
 217         Vertical dialog position (ignored under MSW).
 218     @header{wx/msgdlg.h}
 219 */
 220 int wxMessageBox(const wxString& message,
 221                  const wxString& caption = "Message",
 222                  int style = wxOK,
 223                  wxWindow* parent = NULL,
 224                  int x = wxDefaultCoord,
 225                  int y = wxDefaultCoord);
 226
 227 //@}
 228