Re: disappearing toolbar

jc <>
3 May 2007 07:40:04 -0700
since i had problems with the pointer(as it is NULL after resize and
you end up leaking that memory that i allocated for the CToolbar) and
i converted it into a normal member variable

On May 3, 7:49 am, jc <> wrote:

Thanks Ron,

i observed something weird. i created a pointer to the toolbar and
implemented toolbar as like this

int CParentFrame::CreateAndDockToolBar(void){
        DWORD dToolBarStyle;
        if (!m_wndToolBar.CreateEx(this, dToolBarStyle) ||
                TRACE0("Failed to create toolbar\n");
                return -1; // fail to create
        return 0;}

int CParentFrame::OnCreate(LPCREATESTRUCT lpCS){

        pMenu = new CMenu();
        //m_wndToolBar = new CToolBar();

        if (!m_wndStatusBar.Create(this) ||!
m_wndStatusBar.SetIndicators(indicators, sizeof(indicators)/
                TRACE0("Failed to create status bar\n");
                return -1; // fail to create

        // TODO: Delete these three lines if you don't want the toolbar to
        // be dockable

        return CreateAndDockToolBar();


i call CreateAndDockToolBar from OnCreate function.

when the member variable m_wndToolBar is a pointer, i created a new
CToolbar and after resizing the window, the toolbar again disappeared,
and i found that
the address of the variable was NULL.
how is that possible.
also please somebody tell me, whether this is a wrong way to create
and dock a toolbar to my application



On May 2, 9:00 am, "Ron Francis" <> wrote:

I don't use MFC and I'm using VC++ 6, but maybe you have to handle the
WM_SIZE message.
In MFC, it would be something like an OnSize() or similar function.
You may have to manually resize and move it.

I use a Rebar that I resize every time the window is resized and the
function looks like this ...

//ghWnd is the main application's window

void MoveRebar(HWND hWnd)
 RECT rc,rcRebar;
 int x,y,cx,cy;

 GetClientRect(ghWnd, &rc);
 GetWindowRect(GetDlgItem(hWnd, ID_REBAR), &rcRebar);

 switch(g_wSide) {
 case TOP:
  //align the rebar along the top of the window
  x = 0;
  y = 0;
  cx = rc.right - rc.left;
  cy = rcRebar.bottom -;

 case LEFT:
  //align the rebar along the left side of the window
  x = 0;
  y = 0;
  cx = rcRebar.right - rcRebar.left;
  cy = rc.bottom -;

 case BOTTOM:
  //align the rebar along the bottom of the window
  x = 0;
  y = rc.bottom - ((rcRebar.bottom -;
  cx = rc.right - rc.left;
  cy = rcRebar.bottom -;

 case RIGHT:
  //align the coolbar along the right side of the window
  x = rc.right - (rcRebar.right - rcRebar.left);
  y = 0;
  cx = rcRebar.right - rcRebar.left;
  cy = rc.bottom -;

 MoveWindow( GetDlgItem(hWnd, ID_REBAR),
 //workaround, have to maximize last toolbar else it is right justified


I hope that this give you something to work with, or that someone working
with MFC answers your post.


"jc" <> wrote in message

it doesn't matter "debug" or "release", i change the size of the
window toolbar disappears


On May 2, 8:31 am, jc <> wrote:

i have specific way to reproduce the problem.
it happens only in release mode.
the toolbar disappear when i change the size of the window to which it
has been attached.
like maximize, minimize or even change the size.

On Apr 30, 1:36 pm, jc <> wrote:

i created a win32 application
the parentframe is CMDIFrameWnd and it has a lot of CMDIChildWnd
attached to it.
i also create a toolbar resource and docked it to the main frame.
when i open the application(in release mode),
minimize or maximize or even restore, tool bar disappears. even if try
to open a file(using CFileDialog class)
toolbar disappears.
can somebody explain why it happens and how to prevent it from
happening again

it is VC++ project created in Visual Studio 2005 or VC8

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