/////////////////////////////////////////////////////////////////////////////
-// Name: dialog
+// Name: dialog.h
// Purpose: topic overview
// Author: wxWidgets team
// RCS-ID: $Id$
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
-/*!
+/**
- @page dialog_overview wxDialog overview
+@page overview_dialog wxDialog Overview
- 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:
+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:
- A surrounding frame is implicitly created.
- Extra functionality is automatically given to the dialog box,
- such as tabbing between items (currently Windows only).
- If the dialog box is @e modal, the calling program is blocked
- until the dialog box is dismissed.
+@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.
- For a set of dialog convenience functions, including file selection, see
- @ref dialogfunctions_overview.
- See also #wxTopLevelWindow and #wxWindow for inherited
- member functions. Validation of data in controls is covered in @ref validator_overview.
- @ref autoscrollingdialogs_overview
+See also wxTopLevelWindow and wxWindow for inherited
+member functions. Validation of data in controls is covered in @ref overview_validator.
- @section autoscrollingdialogs Automatic scrolling dialogs
+@li @ref overview_dialog_autoscrolling
- 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.
- 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:
+<hr>
- If wxDialog::GetContentWindow returns a window derived from wxBookCtrlBase, the pages are made scrollable and
- no other adaptation is done.
- wxWidgets looks for a #wxStdDialogButtonSizer and uses it for the non-scrolling part.
- 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.
- 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.
- 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.
- @b 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.
- @b 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.
+@section overview_dialog_autoscrolling Automatic scrolling 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.
- The dialog doesn't use sizers.
- The dialog implementation makes assumptions about the window hierarchy, for example getting the parent of a control and casting to the dialog class.
- 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.
- The dialog has unusual layout, for example a vertical sizer containing a mixture of standard buttons and other controls.
- 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.
+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:
- You can help make sure that your dialogs will continue to function after adaptation by:
+@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.
- avoiding the above situations and assumptions;
- using #wxStdDialogButtonSizer;
- only making assumptions about hierarchy immediately after the dialog is created;
- 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;
- overriding wxDialog::GetContentWindow to return a book control if your dialog implements pages: wxWidgets will then only make the pages
- scrollable.
+@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.
- @b 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.
+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.
+
+*/
projects / wxWidgets.git / blobdiff