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EM_SETREADONLY Overview  Group

An application sends an EM_SETREADONLY message to set or remove the read-only style (ES_READONLY) of an edit control.

EM_SETREADONLY 

wParam = (WPARAM) (BOOL) fReadOnly;  // read-only flag 

lParam = 0;                          // not used; must be zero 

 

Parameters

fReadOnly
Value of wParam. Specifies whether to set or remove the ES_READONLY style. A value of TRUE sets the ES_READONLY style; a value of FALSE removes the ES_READONLY style.

Return Values

If the operation succeeds, the return value is nonzero; otherwise, it is zero.

Remarks

When an edit control has the ES_READONLY style, the user cannot change the text within the edit control.

To determine whether an edit control has the ES_READONLY style, use the GetWindowLong function with the GWL_STYLE flag.

See Also

GetWindowLong 


file: /Techref/os/win/api/win32/mess/src/msg06_14.htm, 1KB, , updated: 2000/4/7 12:19, local time: 2022/8/8 03:21,
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