class MyProperty : public wxPGProperty
{
public:
- // All arguments of ctor must have a default value -
+ // Default constructor
+ MyProperty() { }
+
+ // All arguments of this ctor must have a default value -
// use wxPG_LABEL for label and name
MyProperty( const wxString& label = wxPG_LABEL,
const wxString& name = wxPG_LABEL,
const wxString& value = wxEmptyString )
+ : wxPGProperty(label, name)
{
// m_value is wxVariant
m_value = value;
@code
MyProperty( const wxString& label, const wxString& name, const T& value )
- : wxPGProperty()
+ : wxPGProperty(label, name)
{
// Generally recommended way to set the initial value
// (as it should work in pretty much 100% of cases).
virtual bool OnEvent( wxPropertyGrid* propgrid, wxWindow* wnd_primary, wxEvent& event );
/**
- Called after value of a child property has been altered. Note that this function is
- usually called at the time that value of this property, or given child property, is
- still pending for change.
+ Called after value of a child property has been altered. Must return
+ new value of the whole property (after any alterations warrented by
+ child's new value).
+
+ Note that this function is usually called at the time that value of
+ this property, or given child property, is still pending for change,
+ and as such, result of GetValue() or m_value should not be relied
+ on.
Sample pseudo-code implementation:
@code
- void MyProperty::ChildChanged( wxVariant& thisValue, int childIndex, wxVariant& childValue ) const
+ wxVariant MyProperty::ChildChanged( wxVariant& thisValue,
+ int childIndex,
+ wxVariant& childValue ) const
{
// Acquire reference to actual type of data stored in variant
- // (TFromVariant only exists if wxPropertyGrid's wxVariant-macros were used to create
- // the variant class).
+ // (TFromVariant only exists if wxPropertyGrid's wxVariant-macros
+ // were used to create the variant class).
T& data = TFromVariant(thisValue);
// Copy childValue into data.
break;
...
}
+
+ // Return altered data
+ return data;
}
@endcode
@param thisValue
- Value of this property, that should be altered.
+ Value of this property. Changed value should be returned (in
+ previous versions of wxPropertyGrid it was only necessary to
+ write value back to this argument).
@param childIndex
- Index of child changed (you can use Item(childIndex) to get).
+ Index of child changed (you can use Item(childIndex) to get
+ child property).
@param childValue
- Value of the child property.
+ (Pending) value of the child property.
+
+ @return
+ Modified value of the whole property.
*/
- virtual void ChildChanged( wxVariant& thisValue, int childIndex, wxVariant& childValue ) const;
+ virtual wxVariant ChildChanged( wxVariant& thisValue,
+ int childIndex,
+ wxVariant& childValue ) const;
/**
Returns pointer to an instance of used editor.
/**
Returns wxPGCell of given column.
+
+ @remarks const version of this member function returns 'default'
+ wxPGCell object if the property itself didn't hold
+ cell data.
*/
const wxPGCell& GetCell( unsigned int column ) const;
+ /**
+ Returns wxPGCell of given column, creating one if necessary.
+ */
+ wxPGCell& GetCell( unsigned int column );
+
+ /**
+ Returns wxPGCell of given column, creating one if necessary.
+ */
+ wxPGCell& GetOrCreateCell( unsigned int column );
+
/**
Returns number of child properties.
*/
*/
void SetChoiceSelection( int newValue );
+ /** Set default value of a property. Synonymous to
+
+ @code
+ SetAttribute("DefaultValue", value);
+ @endcode
+ */
+ void SetDefaultValue( wxVariant& value );
+
/**
Sets property's help string, which is shown, for example, in
wxPropertyGridManager's description text box.
wxArrayInt GetIndicesForStrings( const wxArrayString& strings,
wxArrayString* unmatched = NULL ) const;
+ /** Returns property at given virtual y coordinate.
+ */
+ wxPGProperty* GetItemAtY( unsigned int y ) const;
+
/**
Returns @true if item at given index has a valid value;
*/