Groups search result 1 for ChangeClipboardChain SetClipboardViewer "MS DOCS"

From: danny_pav (danny_pav@geocities.com)                    Search Result 1
Subject: Re: Clipboard: Catching a paste to clipboard
Newsgroups: microsoft.public.vc.mfc
Date: 1999/03/17        View: Complete Thread (7 articles) | Original Format

In article <01be6fed$261e3a00$4592a6c3@agd>,
  "gilleptic" <filters@magma.NoSpamPlease.force9.co.uk> wrote:
> Hi,
>
> Is it possible to catch any application putting text in the clipboard?
>
> Thanks,
>
>
USE THESE:
FROM MS DOCS:
SetClipboardViewer
The SetClipboardViewer function adds the specified window to the chain of
clipboard viewers. Clipboard viewer windows receive a WM_DRAWCLIPBOARD message
whenever the content of the clipboard changes.

HWND SetClipboardViewer(
  HWND hWndNewViewer   // handle to clipboard viewer window
);

Parameters hWndNewViewer Handle to the window to be added to the clipboard
chain. Return Values If the function succeeds, the return value identifies
the next window in the clipboard viewer chain. If an error occurs or there
are no other windows in the clipboard viewer chain, the return value is NULL.
To get extended error information, call GetLastError.

Remarks The windows that are part of the clipboard viewer chain, called
clipboard viewer windows, must process the clipboard messages
WM_CHANGECBCHAIN and WM_DRAWCLIPBOARD. Each clipboard viewer window calls
theSendMessage function to pass these messages to the next window in the
clipboard viewer chain.

A clipboard viewer window must eventually remove itself from the clipboard
viewer chain by calling the ChangeClipboardChain function - for example, in
response to theWM_DESTROY message.

and

ChangeClipboardChain
The ChangeClipboardChain function removes a specified window from the chain of
clipboard viewers.

BOOL ChangeClipboardChain(
  HWND hWndRemove,  // handle to window to remove
  HWND hWndNewNext  // handle to next window
);

Parameters hWndRemove Handle to the window to be removed from the chain. The
handle must have been passed to the SetClipboardViewer function. hWndNewNext
Handle to the window that follows the hWndRemove window in the clipboard
viewer chain. (This is the handle returned by SetClipboardViewer, unless the
sequence was changed in response to a WM_CHANGECBCHAIN message.) Return
Values The return value indicates the result of passing the WM_CHANGECBCHAIN
message to the windows in the clipboard viewer chain. Because a window in the
chain typically returns FALSE when it processes WM_CHANGECBCHAIN, the return
value from ChangeClipboardChain is typically FALSE. If there is only one
window in the chain, the return value is typically TRUE.

Remarks
The window identified by hWndNewNext replaces the hWndRemove window in the
chain. The SetClipboardViewer function sends a WM_CHANGECBCHAIN message to the
first window in the clipboard viewer chain.

This should get you started.
Danny

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