Re: SetClipBoard returns Junk characters!

From:

"Giovanni Dicanio" <gdicanio@_NOSPAM_email_DOT_it>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 29 Jul 2008 12:22:16 +0200

Message-ID:

<uMi#HWW8IHA.1200@TK2MSFTNGP04.phx.gbl>

"Anu" <anu.mishra@gmail.com> ha scritto nel messaggio
news:86095524-a89a-448b-8fa9-637c3115bb99@a1g2000hsb.googlegroups.com...

I am trying this code to copy clipboard, but when I do paste, i get
junk characters only (like chinese) in non unicode build of my app.
But in unicode build of my app, it works fine. How can I make it work
in Non unicode? CF_TEXT format works, but I am expecting non english
characters as URL, so I have to use CF_UNICODE format.

These are two routines I wrote to copy Unicode text to clipboard, using
Unicode format (CF_UNICODETEXT) and ANSI format (CF_TEXT).
The code is commented, so you can follow it.

<code>

//-------------------------------------------------------------------
// Copies Unicode text to the clipboard.
// Returns FALSE on error, TRUE on success.
//-------------------------------------------------------------------
BOOL CTestClipboardCopyDlg::CopyTextAsUnicode( const wchar_t * text )
{
    ASSERT( text != NULL );

    // Open the clipboard
    if ( !OpenClipboard() )
        return FALSE;

    // Empty clipboard, so we can copy data to it
    if ( ! EmptyClipboard() )
    {
        CloseClipboard();
        return FALSE;
    }

    // Allocate global memory object for text.
    // This will be used to copy text in to the clipboard.
    SIZE_T bytesToCopy = (wcslen( text ) + 1) * sizeof(wchar_t);
    HGLOBAL hCopy = GlobalAlloc( GMEM_MOVEABLE, bytesToCopy );
    if ( hCopy == NULL )
    {
        CloseClipboard();
        return FALSE;
    }

    // Lock memory, and copy text to it
    wchar_t * destination = (wchar_t *) GlobalLock( hCopy );
    if ( destination == NULL )
    {
        GlobalUnlock( hCopy );
        CloseClipboard();
        return FALSE;
    }
    memcpy( destination, text, bytesToCopy );

    // Unlock memory block
    GlobalUnlock( hCopy );

    // Copy text to the clipboard, in Unicode format
    if ( SetClipboardData( CF_UNICODETEXT, hCopy ) == NULL )
    {
        CloseClipboard();
        return FALSE;
    }

    // Release the clipboard
    CloseClipboard();

    // All right
    return TRUE;
}

//-------------------------------------------------------------------
// Copies Unicode text to the clipboard, using ANSI/MBCS.
// Returns FALSE on error, TRUE on success.
//-------------------------------------------------------------------
BOOL CTestClipboardCopyDlg::CopyTextAsAnsi( const wchar_t * text )
{
    ASSERT( text != NULL );

    // Convert text from Unicode to ANSI/MBCS
    CW2A ansiText( text );

    // Open the clipboard
    if ( !OpenClipboard() )
        return FALSE;

    // Empty clipboard, so we can copy data to it
    if ( ! EmptyClipboard() )
    {
        CloseClipboard();
        return FALSE;
    }

    // Allocate global memory object for text.
    // This will be used to copy text in to the clipboard.
    SIZE_T bytesToCopy = (strlen( ansiText ) + 1) * sizeof(char);
    HGLOBAL hCopy = GlobalAlloc( GMEM_MOVEABLE, bytesToCopy );
    if ( hCopy == NULL )
    {
        CloseClipboard();
        return FALSE;
    }

    // Lock memory, and copy text to it
    char * destination = (char *) GlobalLock( hCopy );
    if ( destination == NULL )
    {
        GlobalUnlock( hCopy );
        CloseClipboard();
        return FALSE;
    }
    memcpy( destination, ansiText, bytesToCopy );

    // Unlock memory block
    GlobalUnlock( hCopy );

    // Copy text to the clipboard, in ANSI format
    if ( SetClipboardData( CF_TEXT, hCopy ) == NULL )
    {
        CloseClipboard();
        return FALSE;
    }

    // Release the clipboard
    CloseClipboard();

    // All right
    return TRUE;
}

</code>

HTH,
Giovanni