EM_SHOWSCROLLBAR message

Shows or hides one of the scroll bars in the host window of a rich edit control.

Parameters

wParam: Identifies which scroll bar to display: horizontal or vertical. This parameter must be SB_VERT or SB_HORZ.
lParam: Specifies whether to show the scroll bar or hide it. Specify TRUE to show the scroll bar and FALSE to hide it.

This message does not return a value.

This method is only valid when the control is in-place active. Calls made while the control is inactive may fail.

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Header	Richedit.h