340 lines
13 KiB
C
340 lines
13 KiB
C
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/////////////////////////////////////////////////////////////////////////////
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// Name: msgdlg.h
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// Purpose: interface of wxMessageDialog
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// Author: wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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/**
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Default message box caption string.
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*/
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const char wxMessageBoxCaptionStr[] = "Message";
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/**
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@class wxMessageDialog
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This class represents a dialog that shows a single or multi-line message,
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with a choice of OK, Yes, No and Cancel buttons.
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@beginStyleTable
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@style{wxOK}
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Puts an Ok button in the message box. May be combined with @c wxCANCEL.
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@style{wxCANCEL}
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Puts a Cancel button in the message box. Must be combined with
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either @c wxOK or @c wxYES_NO.
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@style{wxYES_NO}
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Puts Yes and No buttons in the message box. It is recommended to always
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use @c wxCANCEL with this style as otherwise the message box won't have
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a close button under wxMSW and the user will be forced to answer it.
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@style{wxHELP}
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Puts a Help button to the message box. This button can have special
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appearance or be specially positioned if its label is not changed from
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the default one. Notice that using this button is not supported when
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showing a message box from non-main thread in wxOSX/Cocoa and it is not
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supported in wxOSX/Carbon at all. Available since wxWidgets 2.9.3.
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@style{wxNO_DEFAULT}
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Makes the "No" button default, can only be used with @c wxYES_NO.
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@style{wxCANCEL_DEFAULT}
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Makes the "Cancel" button default, can only be used with @c wxCANCEL.
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This style is currently not supported (and ignored) in wxOSX.
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@style{wxYES_DEFAULT}
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Makes the "Yes" button default, this is the default behaviour and
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this flag exists solely for symmetry with @c wxNO_DEFAULT.
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@style{wxOK_DEFAULT}
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Makes the "OK" button default, this is the default behaviour and
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this flag exists solely for symmetry with @c wxCANCEL_DEFAULT.
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@style{wxICON_NONE}
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Displays no icon in the dialog if possible (an icon might still be
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displayed if the current platform mandates its use). This style may be
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used to prevent the dialog from using the default icon based on @c
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wxYES_NO presence as explained in @c wxICON_QUESTION and @c
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wxICON_INFORMATION documentation below.
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@style{wxICON_EXCLAMATION}
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Displays an exclamation, or warning, icon in the dialog.
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@style{wxICON_ERROR}
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Displays an error icon in the dialog.
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@style{wxICON_HAND}
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Displays an error symbol, this is a MSW-inspired synonym for @c wxICON_ERROR.
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@style{wxICON_QUESTION}
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Displays a question mark symbol. This icon is automatically used
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with @c wxYES_NO so it's usually unnecessary to specify it explicitly.
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This style is not supported for message dialogs under wxMSW when a task
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dialog is used to implement them (i.e. when running under Windows Vista
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or later) because <a href="http://msdn.microsoft.com/en-us/library/aa511273.aspx">Microsoft
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guidelines</a> indicate that no icon should be used for routine
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confirmations. If it is specified, no icon will be displayed.
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@style{wxICON_INFORMATION}
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Displays an information symbol. This icon is used by default if
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@c wxYES_NO is not given so it is usually unnecessary to specify it
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explicitly.
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@style{wxICON_AUTH_NEEDED}
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Displays an authentication needed symbol. This style is only supported
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for message dialogs under wxMSW when a task dialog is used to implement
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them (i.e. when running under Windows Vista or later). In other cases
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the default icon selection logic will be used. Note this can be
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combined with other styles to provide a fallback. For instance, using
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wxICON_AUTH_NEEDED | wxICON_QUESTION will show a shield symbol on
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Windows Vista or above and a question symbol on other platforms.
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Available since wxWidgets 2.9.5
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@style{wxSTAY_ON_TOP}
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Makes the message box stay on top of all other windows and not only
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just its parent (currently implemented only under MSW and GTK).
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@style{wxCENTRE}
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Centre the message box on its parent or on the screen if parent is not
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specified.
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Setting this style under MSW makes no differences as the dialog is
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always centered on the parent.
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@endStyleTable
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@library{wxcore}
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@category{cmndlg}
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@see @ref overview_cmndlg_msg
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@see wxRichMessageDialog
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*/
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class wxMessageDialog : public wxDialog
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{
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public:
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/**
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Helper class allowing to use either stock id or string labels.
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This class should never be used explicitly and is not really part of
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wxWidgets API but rather is just an implementation helper allowing the
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methods such as SetYesNoLabels() and SetOKCancelLabels() below to be
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callable with either stock ids (e.g. ::wxID_CLOSE) or strings
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("&Close").
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*/
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class ButtonLabel
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{
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public:
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/// Construct the label from a stock id.
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ButtonLabel(int stockId);
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/// Construct the label from the specified string.
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ButtonLabel(const wxString& label);
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/**
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Return the associated label as string.
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Get the string label, whether it was originally specified directly
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or as a stock id -- this is only useful for platforms without native
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stock items id support
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*/
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wxString GetAsString() const;
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/**
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Return the stock id or wxID_NONE if this is not a stock label.
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*/
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int GetStockId() const;
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};
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/**
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Constructor specifying the message box properties.
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Use ShowModal() to show the dialog.
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@a style may be a bit list of the identifiers described above.
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Notice that not all styles are compatible: only one of @c wxOK and
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@c wxYES_NO may be specified (and one of them must be specified) and at
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most one default button style can be used and it is only valid if the
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corresponding button is shown in the message box.
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@param parent
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Parent window.
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@param message
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Message to show in the dialog.
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@param caption
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The dialog title.
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@param style
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Combination of style flags described above.
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@param pos
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Dialog position (ignored under MSW).
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*/
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wxMessageDialog(wxWindow* parent, const wxString& message,
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const wxString& caption = wxMessageBoxCaptionStr,
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long style = wxOK | wxCENTRE,
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const wxPoint& pos = wxDefaultPosition);
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/**
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Sets the extended message for the dialog: this message is usually an
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extension of the short message specified in the constructor or set with
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SetMessage().
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If it is set, the main message appears highlighted -- if supported --
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and this message appears beneath it in normal font. On the platforms
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which don't support extended messages, it is simply appended to the
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normal message with an empty line separating them.
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@since 2.9.0
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*/
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virtual void SetExtendedMessage(const wxString& extendedMessage);
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/**
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Sets the label for the Help button.
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Please see the remarks in SetYesNoLabels() documentation.
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Notice that changing the label of the help button resets its special
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status (if any, this depends on the platform) and it will be treated
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just like another button in this case.
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@since 2.9.3
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*/
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virtual bool SetHelpLabel(const ButtonLabel& help);
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/**
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Sets the message shown by the dialog.
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@since 2.9.0
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*/
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virtual void SetMessage(const wxString& message);
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/**
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Overrides the default labels of the OK and Cancel buttons.
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Please see the remarks in SetYesNoLabels() documentation.
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@since 2.9.0
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*/
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virtual bool SetOKCancelLabels(const ButtonLabel& ok,
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const ButtonLabel& cancel);
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/**
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Overrides the default label of the OK button.
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Please see the remarks in SetYesNoLabels() documentation.
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@since 2.9.0
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*/
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virtual bool SetOKLabel(const ButtonLabel& ok);
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/**
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Overrides the default labels of the Yes, No and Cancel buttons.
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Please see the remarks in SetYesNoLabels() documentation.
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@since 2.9.0
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*/
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virtual bool SetYesNoCancelLabels(const ButtonLabel& yes,
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const ButtonLabel& no,
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const ButtonLabel& cancel);
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/**
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Overrides the default labels of the Yes and No buttons.
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The arguments of this function can be either strings or one of the
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standard identifiers, such as @c wxID_APPLY or @c wxID_OPEN. Notice
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that even if the label is specified as an identifier, the return value
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of the dialog ShowModal() method still remains one of @c wxID_OK, @c
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wxID_CANCEL, @c wxID_YES or @c wxID_NO values, i.e. this identifier
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changes only the label appearance but not the return code generated by
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the button. It is possible to mix stock identifiers and string labels
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in the same function call, for example:
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@code
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wxMessageDialog dlg(...);
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dlg.SetYesNoLabels(wxID_SAVE, _("&Don't save"));
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@endcode
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Also notice that this function is not currently available on all
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platforms (although as of wxWidgets 2.9.0 it is implemented in all
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major ports), so it may return @false to indicate that the labels
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couldn't be changed. If it returns @true, the labels were set
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successfully.
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Typically, if the function was used successfully, the main dialog
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message may need to be changed, e.g.:
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@code
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wxMessageDialog dlg(...);
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if ( dlg.SetYesNoLabels(_("&Quit"), _("&Don't quit")) )
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dlg.SetMessage(_("What do you want to do?"));
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else // buttons have standard "Yes"/"No" values, so rephrase the question
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dlg.SetMessage(_("Do you really want to quit?"));
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@endcode
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@since 2.9.0
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*/
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virtual bool SetYesNoLabels(const ButtonLabel& yes, const ButtonLabel& no);
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/**
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Shows the dialog, returning one of wxID_OK, wxID_CANCEL, wxID_YES,
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wxID_NO or wxID_HELP.
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Notice that this method returns the identifier of the button which was
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clicked unlike wxMessageBox() function.
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*/
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virtual int ShowModal();
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wxString GetCaption() const;
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wxString GetMessage() const;
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wxString GetExtendedMessage() const;
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long GetMessageDialogStyle() const;
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bool HasCustomLabels() const;
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wxString GetYesLabel() const;
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wxString GetNoLabel() const;
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wxString GetOKLabel() const;
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wxString GetCancelLabel() const;
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wxString GetHelpLabel() const;
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long GetEffectiveIcon() const;
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};
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// ============================================================================
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// Global functions/macros
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// ============================================================================
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/** @addtogroup group_funcmacro_dialog */
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//@{
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/**
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Show a general purpose message dialog.
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This is a convenient function which is usually used instead of using
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wxMessageDialog directly. Notice however that some of the features, such as
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extended text and custom labels for the message box buttons, are not
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provided by this function but only by wxMessageDialog.
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The return value is one of: @c wxYES, @c wxNO, @c wxCANCEL, @c wxOK or @c
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wxHELP (notice that this return value is @b different from the return value
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of wxMessageDialog::ShowModal()).
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For example:
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@code
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int answer = wxMessageBox("Quit program?", "Confirm",
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wxYES_NO | wxCANCEL, main_frame);
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if (answer == wxYES)
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main_frame->Close();
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@endcode
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@a message may contain newline characters, in which case the message will
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be split into separate lines, to cater for large messages.
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@param message
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Message to show in the dialog.
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@param caption
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The dialog title.
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@param parent
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Parent window.
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@param style
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Combination of style flags described in wxMessageDialog documentation.
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@param x
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Horizontal dialog position (ignored under MSW). Use ::wxDefaultCoord
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for @a x and @a y to let the system position the window.
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@param y
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Vertical dialog position (ignored under MSW).
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@header{wx/msgdlg.h}
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*/
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int wxMessageBox(const wxString& message,
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const wxString& caption = wxMessageBoxCaptionStr,
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int style = wxOK | wxCENTRE,
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wxWindow* parent = NULL,
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int x = wxDefaultCoord,
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int y = wxDefaultCoord);
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//@}
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