+#ifndef _WX_CHECKBOX_H_BASE_
+#define _WX_CHECKBOX_H_BASE_
+
+#include "wx/defs.h"
+
+#if wxUSE_CHECKBOX
+
+#include "wx/control.h"
+
+
+/*
+ * wxCheckBox style flags
+ * (Using wxCHK_* because wxCB_* is used by wxComboBox).
+ * Determine whether to use a 3-state or 2-state
+ * checkbox. 3-state enables to differentiate
+ * between 'unchecked', 'checked' and 'undetermined'.
+ */
+#define wxCHK_2STATE 0x0000
+#define wxCHK_3STATE 0x1000
+
+/*
+ * If this style is set the user can set the checkbox to the
+ * undetermined state. If not set the undetermined set can only
+ * be set programmatically.
+ * This style can only be used with 3 state checkboxes.
+ */
+#define wxCHK_ALLOW_3RD_STATE_FOR_USER 0x2000
+
+/*
+ * The possible states of a 3-state checkbox (Compatible
+ * with the 2-state checkbox).
+ */
+enum wxCheckBoxState
+{
+ wxCHK_UNCHECKED,
+ wxCHK_CHECKED,
+ wxCHK_UNDETERMINED /* 3-state checkbox only */
+};
+
+
+extern WXDLLIMPEXP_DATA_CORE(const char) wxCheckBoxNameStr[];
+
+// ----------------------------------------------------------------------------
+// wxCheckBox: a control which shows a label and a box which may be checked
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxCheckBoxBase : public wxControl
+{
+public:
+ wxCheckBoxBase() { }
+
+ // set/get the checked status of the listbox
+ virtual void SetValue(bool value) = 0;
+ virtual bool GetValue() const = 0;
+
+ bool IsChecked() const
+ {
+ wxASSERT_MSG( !Is3State(), wxT("Calling IsChecked() doesn't make sense for")
+ wxT(" a three state checkbox, Use Get3StateValue() instead") );
+
+ return GetValue();
+ }
+
+ wxCheckBoxState Get3StateValue() const
+ {
+ wxCheckBoxState state = DoGet3StateValue();
+
+ if ( state == wxCHK_UNDETERMINED && !Is3State() )
+ {
+ // Undetermined state with a 2-state checkbox??
+ wxFAIL_MSG( wxT("DoGet3StateValue() says the 2-state checkbox is ")
+ wxT("in an undetermined/third state") );
+
+ state = wxCHK_UNCHECKED;
+ }
+
+ return state;
+ }
+
+ void Set3StateValue(wxCheckBoxState state)
+ {
+ if ( state == wxCHK_UNDETERMINED && !Is3State() )
+ {
+ wxFAIL_MSG(wxT("Setting a 2-state checkbox to undetermined state"));
+ state = wxCHK_UNCHECKED;
+ }
+
+ DoSet3StateValue(state);
+ }
+
+ bool Is3State() const { return HasFlag(wxCHK_3STATE); }
+
+ bool Is3rdStateAllowedForUser() const
+ {
+ return HasFlag(wxCHK_ALLOW_3RD_STATE_FOR_USER);
+ }
+
+ virtual bool HasTransparentBackground() { return true; }
+
+ // wxCheckBox-specific processing after processing the update event
+ virtual void DoUpdateWindowUI(wxUpdateUIEvent& event)
+ {
+ wxControl::DoUpdateWindowUI(event);
+
+ if ( event.GetSetChecked() )
+ SetValue(event.GetChecked());
+ }
+
+protected:
+ // choose the default border for this window
+ virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
+
+ virtual void DoSet3StateValue(wxCheckBoxState WXUNUSED(state)) { wxFAIL; }
+
+ virtual wxCheckBoxState DoGet3StateValue() const
+ {
+ wxFAIL;
+ return wxCHK_UNCHECKED;
+ }
+
+private:
+ wxDECLARE_NO_COPY_CLASS(wxCheckBoxBase);
+};
+
+#if defined(__WXUNIVERSAL__)
+ #include "wx/univ/checkbox.h"
+#elif defined(__WXMSW__)
+ #include "wx/msw/checkbox.h"