constants FilterBarVisibleEnum
The FilterBarPromptVisible property , specifies how the control's filter bar is displayed and behave. The FilterBarVisibleEnum type includes several flags that can be combined together, as described bellow:

NameValueDescription
exFilterBarHidden0 No filter bar is shown while there is no filter applied. The control's filter bar is automatically displayed as soon a a filter is applied. 
exFilterBarVisible1 Specifies that the control's filter bar is visible.
exFilterBarToggle256 The exFilterBarToggle flag specifies that the user can close the control's filter bar ( removes the control's filter ) by clicking the close button of the filter bar or by pressing the CTRL + F, while the control's filter bar is visible. If no filter bar is displayed, the user can display the control's filter bar by pressing the CTRL + F key. While the control's filter bar is visible the user can navigate though the list or control's filter bar using the ALT + Up/Down keys. If missing, the control's filter bar is always shown if any of the following flags is present exFilterBarPromptVisible, exFilterBarVisible, exFilterBarCaptionVisible.
exFilterBarShowCloseIfRequired512 The exFilterBarShowCloseIfRequired flag indicates that the close button of the control's filter bar is displayed only if the control has any currently filter applied. The Background(exFooterFilterBarButton) property on -1 hides permanently the close button of the control's filter bar. 

exFilterBarShowCloseOnRight1024 The exFilterBarShowCloseOnRight flag specifies that the close button of the control's filter bar should be displayed on the right side.