UnityEngine.GUIStyle.Internal_DrawWithTextSelection C# (CSharp) Method

        private static extern void Internal_DrawWithTextSelection(GUIContent content, ref Internal_DrawWithTextSelectionArguments arguments);
        [MethodImpl(MethodImplOptions.InternalCall)]

        internal void DrawWithTextSelection(Rect position, GUIContent content, bool isActive, bool hasKeyboardFocus, int firstSelectedCharacter, int lastSelectedCharacter, bool drawSelectionAsComposition)
        {
            Event current          = Event.current;
            Color cursorColor      = new Color(0f, 0f, 0f, 0f);
            float cursorFlashSpeed = GUI.skin.settings.cursorFlashSpeed;
            float num = (Time.realtimeSinceStartup - GUIStyle.Internal_GetCursorFlashOffset()) % cursorFlashSpeed / cursorFlashSpeed;

            if (cursorFlashSpeed == 0f || num < 0.5f)
            {
                cursorColor = GUI.skin.settings.cursorColor;
            }
            Internal_DrawWithTextSelectionArguments internal_DrawWithTextSelectionArguments = default(Internal_DrawWithTextSelectionArguments);

            internal_DrawWithTextSelectionArguments.target                     = this.m_Ptr;
            internal_DrawWithTextSelectionArguments.position                   = position;
            internal_DrawWithTextSelectionArguments.firstPos                   = firstSelectedCharacter;
            internal_DrawWithTextSelectionArguments.lastPos                    = lastSelectedCharacter;
            internal_DrawWithTextSelectionArguments.cursorColor                = cursorColor;
            internal_DrawWithTextSelectionArguments.selectionColor             = GUI.skin.settings.selectionColor;
            internal_DrawWithTextSelectionArguments.isHover                    = ((!position.Contains(current.mousePosition)) ? 0 : 1);
            internal_DrawWithTextSelectionArguments.isActive                   = ((!isActive) ? 0 : 1);
            internal_DrawWithTextSelectionArguments.on                         = 0;
            internal_DrawWithTextSelectionArguments.hasKeyboardFocus           = ((!hasKeyboardFocus) ? 0 : 1);
            internal_DrawWithTextSelectionArguments.drawSelectionAsComposition = ((!drawSelectionAsComposition) ? 0 : 1);
            GUIStyle.Internal_DrawWithTextSelection(content, ref internal_DrawWithTextSelectionArguments);
        }