// Purpose: topic overview
// Author: wxWidgets team
// RCS-ID: $Id$
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-/*!
+/**
+
+@page overview_dialog wxDialog Overview
+
+@tableofcontents
+
+Classes: wxDialog, wxDialogLayoutAdapter
+
+A dialog box is similar to a panel, in that it is a window which can be used
+for placing controls, with the following exceptions:
+
+@li A surrounding frame is implicitly created.
+@li Extra functionality is automatically given to the dialog box, such as
+ tabbing between items (currently Windows only).
+@li If the dialog box is @e modal, the calling program is blocked until the
+ dialog box is dismissed.
+
+For a set of dialog convenience functions, including file selection, see
+@ref group_funcmacro_dialog.
+
+See also wxTopLevelWindow and wxWindow for inherited member functions.
+Validation of data in controls is covered in @ref overview_validator.
+
- @page overview_dialog wxDialog overview
- Classes: wxDialog, wxDialogLayoutAdapter
+@section overview_dialog_autoscrolling Automatic Scrolled Dialogs
+
+As an ever greater variety of mobile hardware comes to market, it becomes more
+imperative for wxWidgets applications to adapt to these platforms without
+putting too much burden on the programmer. One area where wxWidgets can help is
+in adapting dialogs for the lower resolution screens that inevitably accompany
+a smaller form factor. wxDialog therefore supplies a global
+wxDialogLayoutAdapter class that implements automatic scrolling adaptation for
+most sizer-based custom dialogs.
- A dialog box is similar to a panel, in that it is a window which can
- be used for placing controls, with the following exceptions:
+Many applications should therefore be able to adapt to small displays with
+little or no work, as far as dialogs are concerned. By default this adaptation
+is off. To switch scrolling adaptation on globally in your application, call
+the static function wxDialog::EnableLayoutAdaptation passing @true. You can
+also adjust adaptation on a per-dialog basis by calling
+wxDialog::SetLayoutAdaptationMode with one of
+@c wxDIALOG_ADAPTATION_MODE_DEFAULT (use the global setting),
+@c wxDIALOG_ADAPTATION_MODE_ENABLED or @c wxDIALOG_ADAPTATION_MODE_DISABLED.
- @li A surrounding frame is implicitly created.
- @li Extra functionality is automatically given to the dialog box,
- such as tabbing between items (currently Windows only).
- @li If the dialog box is @e modal, the calling program is blocked
- until the dialog box is dismissed.
+The last two modes override the global adaptation setting. With adaptation
+enabled, if the display size is too small for the dialog, wxWidgets (or rather
+the standard adapter class wxStandardDialogLayoutAdapter) will make part of the
+dialog scrolling, leaving standard buttons in a non-scrolling part at the
+bottom of the dialog. This is done as follows, in
+wxDialogLayoutAdapter::DoLayoutAdaptation called from within wxDialog::Show or
+wxDialog::ShowModal:
- For a set of dialog convenience functions, including file selection, see
- @ref overview_dialogfunctions.
+@li If wxDialog::GetContentWindow returns a window derived from wxBookCtrlBase,
+ the pages are made scrollable and no other adaptation is done.
+@li wxWidgets looks for a wxStdDialogButtonSizer and uses it for the
+ non-scrolling part.
+@li If that search failed, wxWidgets looks for a horizontal wxBoxSizer with one
+ or more standard buttons, with identifiers such as @c wxID_OK and
+ @c wxID_CANCEL.
+@li If that search failed too, wxWidgets finds 'loose' standard buttons (in any
+ kind of sizer) and adds them to a wxStdDialogButtonSizer. If no standard
+ buttons were found, the whole dialog content will scroll.
+@li All the children apart from standard buttons are reparented onto a new
+ ::wxScrolledWindow object, using the old top-level sizer for the scrolled
+ window and creating a new top-level sizer to lay out the scrolled window
+ and standard button sizer.
- See also wxTopLevelWindow and wxWindow for inherited
- member functions. Validation of data in controls is covered in @ref overview_validator.
+@subsection overview_dialog_autoscrolling_custom Customising Scrolling Adaptation
- @li @ref overview_dialog_autoscrolling
+In addition to switching adaptation on and off globally and per dialog, you can
+choose how aggressively wxWidgets will search for standard buttons by setting
+wxDialog::SetLayoutAdaptationLevel. By default, all the steps described above
+will be performed but by setting the level to 1, for example, you can choose to
+only look for wxStdDialogButtonSizer.
+You can use wxDialog::AddMainButtonId to add identifiers for buttons that
+should also be treated as standard buttons for the non-scrolling area.
- <hr>
+You can derive your own class from wxDialogLayoutAdapter or
+wxStandardDialogLayoutAdapter and call wxDialog::SetLayoutAdapter, deleting the
+old object that this function returns. Override the functions
+CanDoLayoutAdaptation and DoLayoutAdaptation to test for adaptation
+applicability and perform the adaptation.
+You can also override wxDialog::CanDoLayoutAdaptation and
+wxDialog::DoLayoutAdaptation in a class derived from wxDialog.
- @section overview_dialog_autoscrolling Automatic scrolling dialogs
+@subsection overview_dialog_autoscrolling_fail Where Scrolling Adaptation May Fail
- As an ever greater variety of mobile hardware comes to market, it becomes more
- imperative for wxWidgets applications to adapt to these platforms without putting
- too much burden on the programmer. One area where wxWidgets can help is in adapting
- dialogs for the lower resolution screens that inevitably accompany a smaller form factor.
- wxDialog therefore supplies a global wxDialogLayoutAdapter class that implements
- automatic scrolling adaptation for most sizer-based custom dialogs.
+Because adaptation rearranges your sizer and window hierarchy, it is not
+fool-proof, and may fail in the following situations:
- Many applications should therefore be able to adapt to small displays with little
- or no work, as far as dialogs are concerned.
- By default this adaptation is off. To switch scrolling adaptation on globally in
- your application, call the static function wxDialog::EnableLayoutAdaptation passing @true.
- You can also adjust adaptation on a per-dialog basis by calling
- wxDialog::SetLayoutAdaptationMode with one of @c wxDIALOG_ADAPTATION_MODE_DEFAULT
- (use the global setting), @c wxDIALOG_ADAPTATION_MODE_ENABLED or @c wxDIALOG_ADAPTATION_MODE_DISABLED.
-
- The last two modes override the global adaptation setting.
- With adaptation enabled, if the display size is too small for the dialog, wxWidgets (or rather the
- standard adapter class wxStandardDialogLayoutAdapter) will make part of the dialog scrolling,
- leaving standard buttons in a non-scrolling part at the bottom of the dialog.
- This is done as follows, in wxDialogLayoutAdapter::DoLayoutAdaptation called from
- within wxDialog::Show or wxDialog::ShowModal:
-
- @li If wxDialog::GetContentWindow returns a window derived from wxBookCtrlBase,
- the pages are made scrollable and no other adaptation is done.
- @li wxWidgets looks for a wxStdDialogButtonSizer and uses it for the non-scrolling part.
- @li If that search failed, wxWidgets looks for a horizontal wxBoxSizer with one or more
- standard buttons, with identifiers such as @c wxID_OK and @c wxID_CANCEL.
- @li If that search failed too, wxWidgets finds 'loose' standard buttons (in any kind of sizer)
- and adds them to a wxStdDialogButtonSizer.
- If no standard buttons were found, the whole dialog content will scroll.
- @li All the children apart from standard buttons are reparented onto a new wxScrolledWindow
- object, using the old top-level sizer for the scrolled window and creating a new top-level
- sizer to lay out the scrolled window and standard button sizer.
-
-
- @subsection overview_dialog_autoscrolling_custom Customising scrolling adaptation
-
- In addition to switching adaptation on and off globally and per dialog,
- you can choose how aggressively wxWidgets will search for standard buttons by setting
- wxDialog::SetLayoutAdaptationLevel. By default, all the steps described above will be
- performed but by setting the level to 1, for example, you can choose to only look for
- wxStdDialogButtonSizer.
-
- You can use wxDialog::AddMainButtonId to add identifiers for buttons that should also be
- treated as standard buttons for the non-scrolling area.
-
- You can derive your own class from wxDialogLayoutAdapter or wxStandardDialogLayoutAdapter and call
- wxDialog::SetLayoutAdapter, deleting the old object that this function returns. Override
- the functions CanDoLayoutAdaptation and DoLayoutAdaptation to test for adaptation applicability
- and perform the adaptation.
-
- You can also override wxDialog::CanDoLayoutAdaptation and wxDialog::DoLayoutAdaptation
- in a class derived from wxDialog.
-
-
- @subsection overview_dialog_autoscrolling_fail Situations where automatic scrolling adaptation may fail
-
- Because adaptation rearranges your sizer and window hierarchy, it is not fool-proof,
- and may fail in the following situations:
-
- @li The dialog doesn't use sizers.
- @li The dialog implementation makes assumptions about the window hierarchy,
- for example getting the parent of a control and casting to the dialog class.
- @li The dialog does custom painting and/or event handling not handled by the scrolled window.
- If this problem can be solved globally, you can derive a new adapter class from
- wxStandardDialogLayoutAdapter and override its CreateScrolledWindow function to return
- an instance of your own class.
- @li The dialog has unusual layout, for example a vertical sizer containing a mixture of
- standard buttons and other controls.
- @li The dialog makes assumptions about the sizer hierarchy, for example to show or hide
- children of the top-level sizer. However, the original sizer hierarchy will still hold
- until Show or ShowModal is called.
-
- You can help make sure that your dialogs will continue to function after adaptation by:
-
- @li avoiding the above situations and assumptions;
- @li using wxStdDialogButtonSizer;
- @li only making assumptions about hierarchy immediately after the dialog is created;
- @li using an intermediate sizer under the main sizer, a @false top-level sizer that
- can be relied on to exist for the purposes of manipulating child sizers and windows;
- @li overriding wxDialog::GetContentWindow to return a book control if your dialog implements
- pages: wxWidgets will then only make the pages scrollable.
-
-
- @subsection overview_dialog_propertysheet wxPropertySheetDialog and wxWizard
-
- Adaptation for wxPropertySheetDialog is always done by simply making the pages
- scrollable, since wxDialog::GetContentWindow returns the dialog's book control and
- this is handled by the standard layout adapter.
-
- wxWizard uses its own CanDoLayoutAdaptation and DoLayoutAdaptation functions rather
- than the global adapter: again, only the wizard pages are made scrollable.
+@li The dialog doesn't use sizers.
+@li The dialog implementation makes assumptions about the window hierarchy,
+ for example getting the parent of a control and casting to the dialog class.
+@li The dialog does custom painting and/or event handling not handled by the scrolled window.
+ If this problem can be solved globally, you can derive a new adapter class from
+ wxStandardDialogLayoutAdapter and override its CreateScrolledWindow function to return
+ an instance of your own class.
+@li The dialog has unusual layout, for example a vertical sizer containing a mixture of
+ standard buttons and other controls.
+@li The dialog makes assumptions about the sizer hierarchy, for example to show or hide
+ children of the top-level sizer. However, the original sizer hierarchy will still hold
+ until Show or ShowModal is called.
+
+You can help make sure that your dialogs will continue to function after
+adaptation by:
+
+@li avoiding the above situations and assumptions;
+@li using wxStdDialogButtonSizer;
+@li only making assumptions about hierarchy immediately after the dialog is created;
+@li using an intermediate sizer under the main sizer, a @false top-level sizer that
+ can be relied on to exist for the purposes of manipulating child sizers and windows;
+@li overriding wxDialog::GetContentWindow to return a book control if your dialog implements
+ pages: wxWidgets will then only make the pages scrollable.
+
+
+@subsection overview_dialog_propertysheet wxPropertySheetDialog and wxWizard
+
+Adaptation for wxPropertySheetDialog is always done by simply making the pages
+scrollable, since wxDialog::GetContentWindow returns the dialog's book control
+and this is handled by the standard layout adapter.
+
+wxWizard uses its own CanDoLayoutAdaptation and DoLayoutAdaptation functions
+rather than the global adapter: again, only the wizard pages are made
+scrollable.
*/
-
projects / wxWidgets.git / blobdiff