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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_CANUNDOmessage, 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

See Also