TRichEdit: disable copy

[Enrico Maria Giordano]

Dear friends, is there a way to disable copy operation? I need to show a multipage document so I can't disable the control and READONLY clause still allows to select the text.

Thank you.

EMG

[toninhofwi]

Hi Enrico.

I changed my class to check lReadOnly state, and I enable and disable some operations like copy if it is true.

Regards,

Toninho.

[Enrico Maria Giordano]

Yes, but I don't know how to prevent the user from select and copy the text.

EMG

[toninhofwi]

Enrico,

Maybe this article can help you, but you need change richedit.c that is not provide with fwh:

http://www.codeguru.com/cpp/controls/ri ... php/c2401/



Regards,

Toninho.

[Enrico Maria Giordano]

EMG

[César E. Lozada]

I think this will avoid Copy, although you can still select a text:

1) Yo have to EXTEND CLASS tRichEdit WITH DATA lCanCopy
2) you have to edit and override Method CanCopy, Method Copy and Method KeyDown (to handle CTRL-C) in class tRichEdit.

METHOD CanCopy() INLINE ((ValType(::lCanCopy)<>"L" .or. ::lCanCopy) .and. ::IsSelection()) //This disables Copy option in rigth click menu

METHOD Copy() CLASS TRichEdit
#ifdef __XPP__
#undef New
#endif
DEFAULT ::lCanCopy:=.T.
if ::lCanCopy
::SendMsg( WM_COPY )
endif
return nil

METHOD KeyDown( nKey, nFlags ) CLASS TRichEdit

if (nKey == Asc( "C" ) .and. GetKeyState( VK_CONTROL ) )
::Copy()
return 0
endif
:
:

Regards

[Enrico Maria Giordano]

Thank you. I already solved it using bKeyDown codeblock.

EMG

[César E. Lozada]

but you can still copy using context right-click menu...

[Enrico Maria Giordano]

No, I already disable it too using bRClicked codeblock.

EMG