IE_CANUNDO
Retrieves an
indication of whether the control can undo the last user operation.
Parameters
wParam
Not used;
must be 0.
lParam
Not used;
must be 0.
Return Value
Returns one
of the following values:
|
Constant |
Description |
|
IER_YES |
The control
can undo the last operation. |
|
IER_NO |
The control
cannot undo the last operation or the control has security protection
disallowing an undo operation. |
|
IER_PARAMERR |
wParam or lParam is invalid. |