EM_UNDO
A version of this page is also available for
4/8/2010
This message reverses the effect of the last edit control operation.
Syntax
EM_UNDO
wParam = 0;
lParam = 0;
Parameters
- wParam
Not used; set to 0.
- lParam
Not used; set to 0.
Return Value
For a single-line edit control, the return value is always TRUE. For a multiline edit control, the return value is TRUE if the undo operation is successful, or FALSE if the undo operation fails.
Remarks
An undo operation can also be undone. For example, you can restore deleted text with the first EM_CANUNDO message, and remove the text again with a second EM_CANUNDO message as long as there is no intervening edit operation.
Requirements
| Header | windows.h |
| Windows Embedded CE | Windows CE 1.0 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |