Removed dysfunctional wxPGPropery::PrepareValueForDialogEditing(); Replaced its functionality with wxPropertyGrid::GetPendingEditedValue(); Added wxPropertyGrid::PerformValidation() flags so it can be called in generic context.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56169 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/propgrid/property.h

@@ -1814,23 +1814,6 @@ public:
     }
 #endif // #if wxUSE_VALIDATORS
 
-    /** Updates property value in case there were last minute
-        changes. If value was unspecified, it will be set to default.
-        Use only for properties that have TextCtrl-based editor.
-        @remarks
-        If you have code similar to
-        @code
-            // Update the value in case of last minute changes
-            if ( primary && propgrid->IsEditorsValueModified() )
-                 GetEditorClass()->CopyValueFromControl( this, primary );
-        @endcode
-        in wxPGProperty::OnEvent wxEVT_COMMAND_BUTTON_CLICKED handler,
-        then replace it with call to this method.
-        @return
-        True if value changed.
-    */
-    bool PrepareValueForDialogEditing( wxPropertyGrid* propgrid );
-
 #ifndef SWIG
     /** Returns client data (void*) of a property.
     */