Is there an alternative to WM_DRAWCLIPBOARD for catching Cut,Copy and Paste ?

Hi dear forum,

Is there an alternative to SetClipboardViewer , subclassing the wiondow and then intercepting the WM_DRAWCLIPBOARD msg ?

Is there a way by using the OLE clipboard instead of the Legacy clipboard ?

Regards.

Monitoring Clipboard Contents

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Originally Posted by Eduardo-

Monitoring Clipboard Contents

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Thanks Eduardo.

Unfortunately, using AddClipboardFormatListener and then monitoring the WM_CLIPBOARDUPDATE message is next to useless as it doesn't differenciate between Copying, cutting or pasting data.

Also, the message cannot be intercepted in order to abort\prevent the clipboard operation.

Regards.

I saw that there are three methods listed there:

Quote:

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There are three ways of monitoring changes to the clipboard. The oldest method is to create a clipboard viewer window. Windows 2000 added the ability to query the clipboard sequence number, and Windows Vista added support for clipboard format listeners.

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I didn't test anyone, but all three are useless?

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Originally Posted by JAAFAR

Thanks Eduardo.

Unfortunately, using AddClipboardFormatListener and then monitoring the WM_CLIPBOARDUPDATE message is next to useless as it doesn't differenciate between Copying, cutting or pasting data.

Also, the message cannot be intercepted in order to abort\prevent the clipboard operation.

Regards.

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I'm not that familiar with using the OLE clipboard, but are you saying that it can differentiate between copy, paste, & cutting, and preventing applications from accessing it?

FYI: The OLE clipboard uses an IDataObject interface.

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Originally Posted by LaVolpe

I'm not that familiar with using the OLE clipboard, but are you saying that it can differentiate between copy, paste, & cutting, and preventing applications from accessing it?

FYI: The OLE clipboard uses an IDataObject interface.

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Hi,

No. I am not saying it can or it can't as I don't even know how to use the oleclipboard... I just thought I would post this question in the forum in case anyone knows.

The only thing I know is clearing the clipboard by passing a 0 instead of a pointer to the IDataObject::blush:

Code:

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Declare Function OleSetClipboard Lib "OLE32.DLL" _
    (ByVal theDataObject As Long) As Integer
   
Sub Test()
    OleSetClipboard (0)
End Sub

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Thanks.