Codejock Developer Community : CXTTipWindow::CreateShadow() bug http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 13 May 2026 10:51:28 +0000 Tue, 04 Jan 2011 11:02:49 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=17743 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[CXTTipWindow::CreateShadow() bug : Hi Oleg,thank you for the quick...]]> http://forum.codejock.com/forum_posts.asp?TID=17743&PID=62069&title=cxttipwindowcreateshadow-bug#62069 Author: VolkerE
Subject: 17743
Posted: 04 January 2011 at 11:02am

Hi Oleg,

thank you for the quick response. Works fine now...

Regards,
Volker

]]> Tue, 04 Jan 2011 11:02:49 +0000 http://forum.codejock.com/forum_posts.asp?TID=17743&PID=62069&title=cxttipwindowcreateshadow-bug#62069 <![CDATA[CXTTipWindow::CreateShadow() bug : Thanks a lot. Please also change...]]> http://forum.codejock.com/forum_posts.asp?TID=17743&PID=62066&title=cxttipwindowcreateshadow-bug#62066 Author: Oleg
Subject: 17743
Posted: 04 January 2011 at 10:35am

Thanks a lot. Please also change Create method as

BOOL CXTPTipWindow::Create(CWnd* pParentWnd)
{
// register the wnd class.
XTPDrawHelpers()->RegisterWndClass(0, _T("XTPTipWindow"), CS_SAVEBITS | CS_HREDRAW | CS_VREDRAW);

// call the base class for creation.
if (!CWnd::CreateEx(0, _T("XTPTipWindow"), _T(""), WS_POPUP, 0, 0, 0, 0, pParentWnd->m_hWnd, 0, NULL))
{
...
]]> Tue, 04 Jan 2011 10:35:57 +0000 http://forum.codejock.com/forum_posts.asp?TID=17743&PID=62066&title=cxttipwindowcreateshadow-bug#62066 <![CDATA[CXTTipWindow::CreateShadow() bug : To correctly modify the window...]]> http://forum.codejock.com/forum_posts.asp?TID=17743&PID=62058&title=cxttipwindowcreateshadow-bug#62058 Author: VolkerE
Subject: 17743
Posted: 04 January 2011 at 3:42am

To correctly modify the window class style in lines 109 and 114, GetClassLong() must be called instead of GetWindowLong() (which returns 0 instead of the current style).

But even after fixing this: this implemention will cause an assertion in the debug build each time a tip window with m_dwTipStyle == (TWS_XT_ALPHASHADOW | TWS_XT_DROPSHADOW) has been displayed. Next time a tip window is created the following assertion in AfxRegisterWndClass() will fail:

    // see if the class already exists
    WNDCLASS wndcls;
    if (::AfxCtxGetClassInfo(hInst, lpszName, &wndcls))
    {
        // already registered, assert everything is good
        ASSERT(wndcls.style == nClassStyle);

]]> Tue, 04 Jan 2011 03:42:27 +0000 http://forum.codejock.com/forum_posts.asp?TID=17743&PID=62058&title=cxttipwindowcreateshadow-bug#62058