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Showing content from https://wxpython.org/Phoenix/docs/html/wx.MessageDialog.html below:

wx.MessageDialog — wxPython Phoenix 4.2.4a1 documentation

This class represents a dialog that shows a single or multi-line message, with a choice of wx.OK, Yes, No and Cancel buttons.

This class supports the following styles:

• wx.OK: Puts an Ok button in the message box. May be combined with CANCEL .

• wx.CANCEL: Puts a Cancel button in the message box. Must be combined with either OK or YES_NO .

• wx.YES_NO: Puts Yes and No buttons in the message box. It is recommended to always use CANCEL 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.

• wx.HELP: 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 OSX/Cocoa. Available since wxWidgets 2.9.3.

• wx.NO_DEFAULT: Makes the “No” button default, can only be used with YES_NO .

• wx.CANCEL_DEFAULT: Makes the “Cancel” button default, can only be used with CANCEL . This style is currently not supported (and ignored) in wxOSX.

• wx.YES_DEFAULT: Makes the “Yes” button default, this is the default behaviour and this flag exists solely for symmetry with NO_DEFAULT .

• wx.OK_DEFAULT: Makes the “wx.OK” button default, this is the default behaviour and this flag exists solely for symmetry with CANCEL_DEFAULT .

• wx.ICON_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 YES_NO presence as explained in ICON_QUESTION and ICON_INFORMATION documentation below.

• wx.ICON_ERROR: Displays an error icon in the dialog.

• wx.ICON_WARNING: Displays a warning icon in the dialog. This style should be used for informative warnings or, in combination with YES_NO or CANCEL , for questions that have potentially serious consequences (caution icon is used on macOS in this case).

• wx.ICON_QUESTION: Displays a question mark symbol. This icon is automatically used with YES_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.

• wx.ICON_INFORMATION: Displays an information symbol. This icon is used by default if YES_NO is not given so it is usually unnecessary to specify it explicitly.

• wx.ICON_EXCLAMATION: Alias for ICON_WARNING .

• wx.ICON_HAND: Alias for ICON_ERROR .

• wx.ICON_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 wx.ICON_AUTH_NEEDED | wx.ICON_QUESTION will show a shield symbol on Windows Vista or above and a question symbol on other platforms. Available since wxWidgets 2.9.5

• wx.STAY_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).

• wx.CENTRE: 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.

Inheritance diagram for class

:

class wx.MessageDialog(Dialog)¶

Possible constructors:

MessageDialog(parent, message, caption=MessageBoxCaptionStr,
              style=OK|CENTRE, pos=DefaultPosition) -> None

This class represents a dialog that shows a single or multi-line message, with a choice of wx.OK, Yes, No and Cancel buttons.

Methods¶

__init__(self, parent, message, caption=MessageBoxCaptionStr, style=OK | CENTRE, pos=DefaultPosition)¶

Constructor specifying the message box properties.

Use ShowModal to show the dialog.

style may be a bit list of the identifiers described above.

Notice that not all styles are compatible: only one of OK and YES_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.

Parameters:

• parent (wx.Window) – Parent window.

• message (string) – Message to show in the dialog.

• caption (string) – The dialog title.

• style (long) – Combination of style flags described above.

• pos (wx.Point) – Dialog position (ignored under MSW).

Return type:

None

GetCancelLabel(self)¶

Return type:

str

GetCaption(self)¶

Return type:

str

static GetClassDefaultAttributes(variant=WINDOW_VARIANT_NORMAL)¶

Parameters:

variant (WindowVariant)

Return type:

wx.VisualAttributes

GetEffectiveIcon(self)¶

Return type:

int

GetExtendedMessage(self)¶

Return type:

str

GetHelpLabel(self)¶

Return type:

str

GetMessage(self)¶

Return type:

str

GetMessageDialogStyle(self)¶

Return type:

int

GetNoLabel(self)¶

Return type:

str

GetOKLabel(self)¶

Return type:

str

GetYesLabel(self)¶

Return type:

str

HasCustomLabels(self)¶

Return type:

bool

SetExtendedMessage(self, extendedMessage)¶

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.

Parameters:

extendedMessage (string)

Return type:

None

Added in version 2.9.0.

SetHelpLabel(self, help)¶

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.

Parameters:

help (MessageDialogButtonLabel)

Return type:

bool

Added in version 2.9.3.

SetMessage(self, message)¶

Sets the message shown by the dialog.

Parameters:

message (string)

Return type:

None

Added in version 2.9.0.

SetOKCancelLabels(self, ok, cancel)¶

Overrides the default labels of the wx.OK and Cancel buttons.

Please see the remarks in SetYesNoLabels documentation.

Parameters:

• ok (MessageDialogButtonLabel)

• cancel (MessageDialogButtonLabel)

Return type:

bool

Added in version 2.9.0.

SetOKLabel(self, ok)¶

Overrides the default label of the wx.OK button.

Please see the remarks in SetYesNoLabels documentation.

Parameters:

ok (MessageDialogButtonLabel)

Return type:

bool

Added in version 2.9.0.

SetYesNoCancelLabels(self, yes, no, cancel)¶

Overrides the default labels of the Yes, No and Cancel buttons.

Please see the remarks in SetYesNoLabels documentation.

Parameters:

• yes (MessageDialogButtonLabel)

• no (MessageDialogButtonLabel)

• cancel (MessageDialogButtonLabel)

Return type:

bool

Added in version 2.9.0.

SetYesNoLabels(self, yes, no)¶

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 ID_APPLY or ID_OPEN . Notice that even if the label is specified as an identifier, the return value of the dialog ShowModal method still remains one of ID_OK , ID_CANCEL , ID_YES or ID_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:

dlg = wx.MessageDialog(parent, message, caption)
dlg.SetYesNoLabels(wx.ID_SAVE, "&Don't save")

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.:

dlg = wx.MessageDialog(parent, message, caption)
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?")

Parameters:

• yes (MessageDialogButtonLabel)

• no (MessageDialogButtonLabel)

Return type:

bool

Added in version 2.9.0.

ShowModal(self)¶

Shows the dialog, returning one of wx.ID_OK, wx.ID_CANCEL, wx.ID_YES, wx.ID_NO or wx.ID_HELP.

Notice that this method returns the identifier of the button which was clicked unlike wx.MessageBox function.

Return type:

int

Properties¶

CancelLabel¶

See GetCancelLabel

Caption¶

See GetCaption

EffectiveIcon¶

See GetEffectiveIcon

ExtendedMessage¶

See GetExtendedMessage and SetExtendedMessage

HelpLabel¶

See GetHelpLabel and SetHelpLabel

Message¶

See GetMessage and SetMessage

MessageDialogStyle¶

See GetMessageDialogStyle

NoLabel¶

See GetNoLabel

OKLabel¶

See GetOKLabel and SetOKLabel

YesLabel¶

See GetYesLabel

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