| 
  virtual | 
Called when the edit control needs to draw an outline button.
OnDrawOutlineButton is called when the edit control needs to draw an outline button. Override it in a derived class to customize appearance of outline buttons.
The default implementation draws a small rectangle with a cross.
| pDC | A pointer to device context. | 
| rectButton | A bounding rectangle of the button. | 
| pRowOutlineBlock | A pointer to the collapsible node for this outline button. It is used to retrieve the state of the node. | 
| bInsideOpenBlockAtStart | Specifies whether the collapsible node is continued from the previous row. | 
| bInsideOpenBlockAtEnd | Specifies whether the collapsible node is continued on the next row. | 
| bEndOfBlock | If TRUE, draws the end of collapsible node. |