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