EM_CANUNDO (RichInk Control)

4/8/2010

The EM_CANUNDO message determines whether actions can be reversed.

Syntax

EM_CANUNDO
    wParam = (WPARAM) 0;
    lParam = (LPARAM) 0;

Parameters

• wParam
  Reserved; set to 0.

• lParam
  Reserved; set to 0.

Return Value

Returns TRUE, or non-zero if there is a transaction. Returns FALSE, or zero if there are no transactions.

Remarks

EM_CANUNDO is defined in winuser.h, not in Richink.h.

Requirements

See Also

Concepts

RichInk Control Messages