void CMDIChildWnd::ActivateFrame(int nCmdShow)
{
BOOL bVisibleThen=(GetStyle()&WS_VISIBLE)!=0;
if (nCmdShow == -1)
{
BOOL bMaximized;
m_pParent->MDIGetActive(&bMaximized);
DWORD dwStyle=GetStyle();
if (bMaximized || (dwStyle&WS_MAXIMIZE))
nCmdShow=SW_SHOWMAXIMIZED;
else if (dwStyle&WS_MINIMIZE)
nCmdShow=SW_SHOWMINIMIZED;
}
CFrameWnd::ActivateFrame(nCmdShow);
::SendMessage(m_pParent->m_hWndMDIClient,WM_MDIREFRESHMENU,0,0);
BOOL bVisibleNow=(GetStyle()&WS_VISIBLE)!=0;
if (bVisibleNow==bVisibleThen)
return;
if (!bVisibleNow)
{
HWND hWnd=(HWND)::SendMessage(m_pParent->m_hWndMDIClient,WM_MDIGETACTIVE,0,0);
if (hWnd!=m_hWnd)
return;
m_pParent->MDINext();
hWnd=(HWND)::SendMessage(m_pParent->m_hWndMDIClient,WM_MDIGETACTIVE,0,0);
if (hWnd==m_hWnd)
OnMDIActivate(NULL,m_hWnd);
}
else
OnMDIActivate(m_hWnd,NULL);
}
void CMDIChildWnd::ActivateFrame(int nCmdShow)
{
BOOL bVisibleThen = (GetStyle() & WS_VISIBLE) != 0;
CMDIFrameWnd* pFrameWnd = GetMDIFrame();
ASSERT_VALID(pFrameWnd);
// determine default show command
if (nCmdShow == -1)
{
// get maximized state of frame window (previously active child)
BOOL bMaximized;
pFrameWnd->MDIGetActive(&bMaximized);
// convert show command based on current style
DWORD dwStyle = GetStyle();
if (bMaximized || (dwStyle & WS_MAXIMIZE))
nCmdShow = SW_SHOWMAXIMIZED;
else if (dwStyle & WS_MINIMIZE)
nCmdShow = SW_SHOWMINIMIZED;
}
// finally, show the window
CFrameWnd::ActivateFrame(nCmdShow);
// update the Window menu to reflect new child window
CMDIFrameWnd* pFrame = GetMDIFrame();
::SendMessage(pFrame->m_hWndMDIClient, WM_MDIREFRESHMENU, 0, 0);
// Note: Update the m_bPseudoInactive flag. This is used to handle the
// last MDI child getting hidden. Windows provides no way to deactivate
// an MDI child window.
BOOL bVisibleNow = (GetStyle() & WS_VISIBLE) != 0;
if (bVisibleNow == bVisibleThen)
return;
if (!bVisibleNow)
{
// get current active window according to Windows MDI
HWND hWnd = (HWND)::SendMessage(pFrameWnd->m_hWndMDIClient,
WM_MDIGETACTIVE, 0, 0);
if (hWnd != m_hWnd)
{
// not active any more -- window must have been deactivated
ASSERT(!m_bPseudoInactive);
return;
}
// check next window
ASSERT(hWnd != NULL);
pFrameWnd->MDINext();
// see if it has been deactivated now...
hWnd = (HWND)::SendMessage(pFrameWnd->m_hWndMDIClient,
WM_MDIGETACTIVE, 0, 0);
if (hWnd == m_hWnd)
{
// still active -- fake deactivate it
ASSERT(hWnd != NULL);
OnMDIActivate(FALSE, NULL, this);
m_bPseudoInactive = TRUE; // so MDIGetActive returns NULL
}
}
else if (m_bPseudoInactive)
{
// if state transitioned from not visible to visible, but
// was pseudo deactivated -- send activate notify now
OnMDIActivate(TRUE, this, NULL);
ASSERT(!m_bPseudoInactive); // should get set in OnMDIActivate!
}
}
