How to create toolbar in CMDIChildWndEx derived CChildFrame? - mfc

Question

This question is a follow up of my previous question.
First thanks for the links and examples, they do work voor a CMDIChildWnd derived CChildFrame class, but not for a CMDIChildWndEx derived one.
What i want to do:
I want to create a toolbar in the CChildFrame window (derived from CMDIChildWndEx !!)
What i have done so far:
1) Created a MDI Tabbed documents CView project using VS2008Pro App-wizard.
2) In CChildFrame i added OnCreate()
int CChildFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CMDIChildWndEx::OnCreate(lpCreateStruct) == -1)
return -1;
// TODO: Add your specialized creation code here
if (!m_wndToolBar.Create(this) ||
!m_wndToolBar.LoadToolBar(IDR_CHILDFRAME))
{
TRACE0("Failed to create toolbar\n");
return -1; // fail to create
}
// TODO: Remove this if you don't want tool tips or a
// resizeable toolbar
m_wndToolBar.SetBarStyle(m_wndToolBar.GetBarStyle() |
CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);
// TODO: Delete these three lines if you don't want the toolbar
// to be dockable
m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);
EnableDocking(CBRS_ALIGN_ANY);
DockControlBar(&m_wndToolBar); // Goes wrong here !!
return 0;
}
it compiles and runs and halts into an ASSERT in winfrm2.cpp (line
92) :
void CFrameWnd::DockControlBar(CControlBar* pBar, CDockBar* pDockBar,
LPCRECT lpRect)
{
ENSURE_ARG(pBar != NULL);
// make sure CControlBar::EnableDocking has been called
ASSERT(pBar->m_pDockContext != NULL);
if (pDockBar == NULL)
{
for (int i = 0; i < 4; i++)
{
if ((dwDockBarMap[i][1] & CBRS_ALIGN_ANY) ==
(pBar->m_dwStyle & CBRS_ALIGN_ANY))
{
pDockBar = (CDockBar*)GetControlBar(dwDockBarMap[i][0]);
/* --------> goes wrong here ------> */ ASSERT(pDockBar != NULL);
// assert fails when initial CBRS_ of bar does not
// match available docking sites, as set by EnableDocking()
break;
}
}
}
ENSURE_ARG(pDockBar != NULL);
ASSERT(m_listControlBars.Find(pBar) != NULL);
ASSERT(pBar->m_pDockSite == this);
// if this assertion occurred it is because the parent of pBar was
not initially
// this CFrameWnd when pBar's OnCreate was called
// i.e. this control bar should have been created with a different
parent initially
pDockBar->DockControlBar(pBar, lpRect);
}
in line 92 :
ASSERT(pDockBar != NULL);
// assert fails when initial CBRS_ of bar does not
// match available docking sites, as set by EnableDocking()
the source here even gives some explanation of what goes wrong here
but i dont know how to match 'initial CBRS_ of bar with those set by
EnableDocking()''
Does this even work for a CMDIChildWndEx derived CChildFrame class ?
Well so my question is does any one know how to add a toolbar to a
CMDIChildWndEx derived CChildFrame class ?
Any suggestions on how to get this working ?
My project is here :
http://www.4shared.com/file/235762968/49b8b97a/GUI50.html
Any help would be greatly appreciated !

Answer 1

This seems to work for a CMFCToolBar
int CChildFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CMDIChildWndEx::OnCreate(lpCreateStruct) == -1)
return -1;
m_wndToolBar.Create(this, AFX_DEFAULT_TOOLBAR_STYLE, IDR_CHILDFRAME);
m_wndToolBar.LoadToolBar(IDR_CHILDFRAME, 0, 0, TRUE );
m_wndToolBar.SetPaneStyle( CBRS_TOOLTIPS | CBRS_FLYBY| CBRS_BOTTOM);
m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);
EnableDocking(CBRS_ALIGN_ANY);
DockPane(&m_wndToolBar);
return 0;
}

Answer 2

You should set m_bEnableFloatingBars = TRUE in MDIChild constructor. Without this your toolbar will no be docked by mouse, only static docking.