///////////////////////////////////////////////////////////////////////////// // Name: msgdlg.h // Purpose: interface of wxMessageDialog // Author: wxWidgets team // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// /** Default message box caption string. */ const char wxMessageBoxCaptionStr[] = "Message"; /** @class wxMessageDialog This class represents a dialog that shows a single or multi-line message, with a choice of OK, Yes, No and Cancel buttons. @beginStyleTable @style{wxOK} Puts an Ok button in the message box. May be combined with @c wxCANCEL. @style{wxCANCEL} Puts a Cancel button in the message box. Must be combined with either @c wxOK or @c wxYES_NO. @style{wxYES_NO} Puts Yes and No buttons in the message box. It is recommended to always use @c wxCANCEL with this style as otherwise the message box won't have a close button under wxMSW and the user will be forced to answer it. @style{wxHELP} Puts a Help button to the message box. This button can have special appearance or be specially positioned if its label is not changed from the default one. Notice that using this button is not supported when showing a message box from non-main thread in wxOSX/Cocoa. Available since wxWidgets 2.9.3. @style{wxNO_DEFAULT} Makes the "No" button default, can only be used with @c wxYES_NO. @style{wxCANCEL_DEFAULT} Makes the "Cancel" button default, can only be used with @c wxCANCEL. This style is currently not supported (and ignored) in wxOSX. @style{wxYES_DEFAULT} Makes the "Yes" button default, this is the default behaviour and this flag exists solely for symmetry with @c wxNO_DEFAULT. @style{wxOK_DEFAULT} Makes the "OK" button default, this is the default behaviour and this flag exists solely for symmetry with @c wxCANCEL_DEFAULT. @style{wxICON_NONE} Displays no icon in the dialog if possible (an icon might still be displayed if the current platform mandates its use). This style may be used to prevent the dialog from using the default icon based on @c wxYES_NO presence as explained in @c wxICON_QUESTION and @c wxICON_INFORMATION documentation below. @style{wxICON_ERROR} Displays an error icon in the dialog. @style{wxICON_WARNING} Displays a warning icon in the dialog. This style should be used for informative warnings or, in combination with @c wxYES_NO or @c wxCANCEL, for questions that have potentially serious consequences (caution icon is used on OS X in this case). @style{wxICON_QUESTION} Displays a question mark symbol. This icon is automatically used with @c wxYES_NO so it's usually unnecessary to specify it explicitly. This style is not supported for message dialogs under wxMSW when a task dialog is used to implement them (i.e. when running under Windows Vista or later) because Microsoft guidelines indicate that no icon should be used for routine confirmations. If it is specified, no icon will be displayed. @style{wxICON_INFORMATION} Displays an information symbol. This icon is used by default if @c wxYES_NO is not given so it is usually unnecessary to specify it explicitly. @style{wxICON_EXCLAMATION} Alias for @c wxICON_WARNING. @style{wxICON_HAND} Alias for @c wxICON_ERROR. @style{wxICON_AUTH_NEEDED} Displays an authentication needed symbol. This style is only supported for message dialogs under wxMSW when a task dialog is used to implement them (i.e. when running under Windows Vista or later). In other cases the default icon selection logic will be used. Note this can be combined with other styles to provide a fallback. For instance, using wxICON_AUTH_NEEDED | wxICON_QUESTION will show a shield symbol on Windows Vista or above and a question symbol on other platforms. Available since wxWidgets 2.9.5 @style{wxSTAY_ON_TOP} Makes the message box stay on top of all other windows and not only just its parent (currently implemented only under MSW and GTK). @style{wxCENTRE} Centre the message box on its parent or on the screen if parent is not specified. Setting this style under MSW makes no differences as the dialog is always centered on the parent. @endStyleTable @library{wxcore} @category{cmndlg} @see @ref overview_cmndlg_msg @see wxRichMessageDialog */ class wxMessageDialog : public wxDialog { public: /** Helper class allowing to use either stock id or string labels. This class should never be used explicitly and is not really part of wxWidgets API but rather is just an implementation helper allowing the methods such as SetYesNoLabels() and SetOKCancelLabels() below to be callable with either stock ids (e.g. ::wxID_CLOSE) or strings ("&Close"). */ class ButtonLabel { public: /// Construct the label from a stock id. ButtonLabel(int stockId); /// Construct the label from the specified string. ButtonLabel(const wxString& label); /** Return the associated label as string. Get the string label, whether it was originally specified directly or as a stock id -- this is only useful for platforms without native stock items id support */ wxString GetAsString() const; /** Return the stock id or wxID_NONE if this is not a stock label. */ int GetStockId() const; }; /** Constructor specifying the message box properties. Use ShowModal() to show the dialog. @a style may be a bit list of the identifiers described above. Notice that not all styles are compatible: only one of @c wxOK and @c wxYES_NO may be specified (and one of them must be specified) and at most one default button style can be used and it is only valid if the corresponding button is shown in the message box. @param parent Parent window. @param message Message to show in the dialog. @param caption The dialog title. @param style Combination of style flags described above. @param pos Dialog position (ignored under MSW). */ wxMessageDialog(wxWindow* parent, const wxString& message, const wxString& caption = wxMessageBoxCaptionStr, long style = wxOK | wxCENTRE, const wxPoint& pos = wxDefaultPosition); /** Sets the extended message for the dialog: this message is usually an extension of the short message specified in the constructor or set with SetMessage(). If it is set, the main message appears highlighted -- if supported -- and this message appears beneath it in normal font. On the platforms which don't support extended messages, it is simply appended to the normal message with an empty line separating them. @since 2.9.0 */ virtual void SetExtendedMessage(const wxString& extendedMessage); /** Sets the label for the Help button. Please see the remarks in SetYesNoLabels() documentation. Notice that changing the label of the help button resets its special status (if any, this depends on the platform) and it will be treated just like another button in this case. @since 2.9.3 */ virtual bool SetHelpLabel(const ButtonLabel& help); /** Sets the message shown by the dialog. @since 2.9.0 */ virtual void SetMessage(const wxString& message); /** Overrides the default labels of the OK and Cancel buttons. Please see the remarks in SetYesNoLabels() documentation. @since 2.9.0 */ virtual bool SetOKCancelLabels(const ButtonLabel& ok, const ButtonLabel& cancel); /** Overrides the default label of the OK button. Please see the remarks in SetYesNoLabels() documentation. @since 2.9.0 */ virtual bool SetOKLabel(const ButtonLabel& ok); /** Overrides the default labels of the Yes, No and Cancel buttons. Please see the remarks in SetYesNoLabels() documentation. @since 2.9.0 */ virtual bool SetYesNoCancelLabels(const ButtonLabel& yes, const ButtonLabel& no, const ButtonLabel& cancel); /** Overrides the default labels of the Yes and No buttons. The arguments of this function can be either strings or one of the standard identifiers, such as @c wxID_APPLY or @c wxID_OPEN. Notice that even if the label is specified as an identifier, the return value of the dialog ShowModal() method still remains one of @c wxID_OK, @c wxID_CANCEL, @c wxID_YES or @c wxID_NO values, i.e. this identifier changes only the label appearance but not the return code generated by the button. It is possible to mix stock identifiers and string labels in the same function call, for example: @code wxMessageDialog dlg(...); dlg.SetYesNoLabels(wxID_SAVE, _("&Don't save")); @endcode Also notice that this function is not currently available on all platforms (although as of wxWidgets 2.9.0 it is implemented in all major ports), so it may return @false to indicate that the labels couldn't be changed. If it returns @true, the labels were set successfully. Typically, if the function was used successfully, the main dialog message may need to be changed, e.g.: @code wxMessageDialog dlg(...); if ( dlg.SetYesNoLabels(_("&Quit"), _("&Don't quit")) ) dlg.SetMessage(_("What do you want to do?")); else // buttons have standard "Yes"/"No" values, so rephrase the question dlg.SetMessage(_("Do you really want to quit?")); @endcode @since 2.9.0 */ virtual bool SetYesNoLabels(const ButtonLabel& yes, const ButtonLabel& no); /** Shows the dialog, returning one of wxID_OK, wxID_CANCEL, wxID_YES, wxID_NO or wxID_HELP. Notice that this method returns the identifier of the button which was clicked unlike wxMessageBox() function. */ virtual int ShowModal(); wxString GetCaption() const; wxString GetMessage() const; wxString GetExtendedMessage() const; long GetMessageDialogStyle() const; bool HasCustomLabels() const; wxString GetYesLabel() const; wxString GetNoLabel() const; wxString GetOKLabel() const; wxString GetCancelLabel() const; wxString GetHelpLabel() const; long GetEffectiveIcon() const; }; // ============================================================================ // Global functions/macros // ============================================================================ /** @addtogroup group_funcmacro_dialog */ //@{ /** Show a general purpose message dialog. This is a convenient function which is usually used instead of using wxMessageDialog directly. Notice however that some of the features, such as extended text and custom labels for the message box buttons, are not provided by this function but only by wxMessageDialog. The return value is one of: @c wxYES, @c wxNO, @c wxCANCEL, @c wxOK or @c wxHELP (notice that this return value is @b different from the return value of wxMessageDialog::ShowModal()). For example: @code int answer = wxMessageBox("Quit program?", "Confirm", wxYES_NO | wxCANCEL, main_frame); if (answer == wxYES) main_frame->Close(); @endcode @a message may contain newline characters, in which case the message will be split into separate lines, to cater for large messages. @param message Message to show in the dialog. @param caption The dialog title. @param parent Parent window. @param style Combination of style flags described in wxMessageDialog documentation. @param x Horizontal dialog position (ignored under MSW). Use ::wxDefaultCoord for @a x and @a y to let the system position the window. @param y Vertical dialog position (ignored under MSW). @header{wx/msgdlg.h} */ int wxMessageBox(const wxString& message, const wxString& caption = wxMessageBoxCaptionStr, int style = wxOK | wxCENTRE, wxWindow* parent = NULL, int x = wxDefaultCoord, int y = wxDefaultCoord); //@}