Add document for SetParent interface

Add document for SetParent interface.
After setting parent and child window, these windows moves together.
Then, child's Raise() or Lower() is called, child window will move to Top or Bottom.
After window stack is changed by child,
if parent's Raise() or Lower() is called, these window will move together again.

Change-Id: I85bc136f5e2b6feb3c7580cbc6521b7de8f45ce3

diff --git a/dali/devel-api/adaptor-framework/window-devel.h b/dali/devel-api/adaptor-framework/window-devel.h
index 53e06d6..bdcd9a5 100644 (file)
--- a/dali/devel-api/adaptor-framework/window-devel.h
+++ b/dali/devel-api/adaptor-framework/window-devel.h
@@ -131,6 +131,8 @@ DALI_ADAPTOR_API WheelEventSignalType& WheelEventSignal( Window window );
  * @brief Sets parent window of the window.
  *
  * After setting that, these windows do together when raise-up, lower and iconified/deiconified.
+ * Initially, the window is located on top of the parent. The window can go below parent by calling Lower().
+ * If parent's window stack is changed by calling Raise() or Lower(), child windows are located on top of the parent again.
  *
  * @param[in] window The window instance
  * @param[in] parent The parent window instance