Re: The WM_KICKIDLE message

From:
Hans-J. Ude <news@s237965939.online.de>
Newsgroups:
microsoft.public.vc.mfc
Date:
Sun, 15 May 2011 16:01:58 +0200
Message-ID:
<d6nvs6la62m0p7fqbaf71esimhorqjflr0@4ax.com>
David Webber schrieb:

If it isn't documented, and isn't in the public headers, doesn't that raise
a number of questions:

Which versions of Windows have it?
When is it sent?
What is its intended purpose?
Is it safe to rely on it?


That's what I asked myself too. But then I decided to use it for the reasons
that David L. mentioned. This is the reduced code:

BEGIN_MESSAGE_MAP(CBatchInputDlg, CDialogEx)
    ON_MESSAGE_VOID(WM_KICKIDLE, OnKickIdle)
    ON_UPDATE_COMMAND_UI(IDC_PASTE, OnUpdateBtnPaste)
END_MESSAGE_MAP()

void CBatchInputDlg::OnKickIdle()
{
  UpdateDialogControls(this, FALSE);
}

void CBatchInputDlg::OnUpdateBtnPaste(CCmdUI *pCmd)
{
  BOOL bEnable =
    IsClipboardFormatAvailable(CF_UNICODETEXT) ||
    IsClipboardFormatAvailable(CF_TEXT);

  pCmd->Enable(bEnable);
}

Btw, the ON_MESSAGE_VOID macro is undocumented too but can be quite handy if
params or returns are unused.

Hans
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