Called by the framework to display the combo box drop button.
Override this member function in your CBCGPVisualManager - derived class to customize the button appearance.
- Parameters
-
| pDC | A pointer to a device context. |
| rect | Specifies the bounding rectangle of a drop button. |
| bDisabled | Specifies whether the combo box button is disabled or not. |
| bIsDropped | Specifies whether the combo box is in dropped state. |
| bIsHighlighted | Specifies whether the combo box drop button is highlighted or not. |
| pButton | A pointer to the combo box whose drop button is to be displayed. |
