windows-nt/Source/XPSP1/NT/shell/ext/taskui/taskframe.cpp

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2020-09-26 03:20:57 -05:00
// TaskFrame.cpp : Implementation of CTaskUIApp and DLL registration.
#include "stdafx.h"
#include "TaskFrame.h"
#include "cbsc.h"
/////////////////////////////////////////////////////////////////////////////
//
//
// Create and initialize an instance of the task frame.
//
HRESULT
CTaskFrame::CreateInstance( // [static]
IPropertyBag *pPropertyBag,
ITaskPageFactory *pPageFactory,
CComObject<CTaskFrame> **ppFrameOut
)
{
ASSERT(NULL != pPropertyBag);
ASSERT(NULL != pPageFactory);
ASSERT(!IsBadWritePtr(ppFrameOut, sizeof(*ppFrameOut)));
CComObject<CTaskFrame> *pFrame;
HRESULT hr = CComObject<CTaskFrame>::CreateInstance(&pFrame);
if (SUCCEEDED(hr))
{
hr = pFrame->_Init(pPropertyBag, pPageFactory);
if (SUCCEEDED(hr))
{
pFrame->AddRef();
}
else
{
delete pFrame;
pFrame = NULL;
}
}
*ppFrameOut = pFrame;
ASSERT(SUCCEEDED(hr) || NULL == *ppFrameOut);
return hr;
}
CTaskFrame::CTaskFrame()
: m_pPropertyBag(NULL), m_pPageFactory(NULL), m_pUIParser(NULL),
m_hwndNavBar(NULL), m_hwndStatusBar(NULL),
m_himlNBDef(NULL), m_himlNBHot(NULL), m_pbmWatermark(NULL)
{
SetRectEmpty(&m_rcPage);
m_ptMinSize.x = m_ptMinSize.y = 0;
// DUI initialization
InitThread();
}
CTaskFrame::~CTaskFrame()
{
Close();
// m_dpaHistory is self-destructing
if (m_himlNBDef)
ImageList_Destroy(m_himlNBDef);
if (m_himlNBHot)
ImageList_Destroy(m_himlNBHot);
ATOMICRELEASE(m_pPropertyBag);
ATOMICRELEASE(m_pPageFactory);
delete m_pbmWatermark;
delete m_pUIParser;
// DUI shutdown
UnInitThread();
}
void CALLBACK TaskUIParseError(LPCWSTR pszError, LPCWSTR pszToken, int dLine)
{
//#if DBG
#if 1
WCHAR buf[201];
if (dLine != -1)
swprintf(buf, L"%s '%s' at line %d", pszError, pszToken, dLine);
else
swprintf(buf, L"%s '%s'", pszError, pszToken);
MessageBoxW(NULL, buf, L"Parser Message", MB_OK);
#endif
}
HRESULT CTaskFrame::_Init(IPropertyBag* pBag, ITaskPageFactory* pPageFact)
{
HRESULT hr;
if (!pBag || !pPageFact)
return E_INVALIDARG;
m_pPropertyBag = pBag;
m_pPropertyBag->AddRef();
m_pPageFactory = pPageFact;
m_pPageFactory->AddRef();
m_iCurrentPage = -1;
hr = Parser::Create(IDR_TASKUI_UI, _Module.GetResourceInstance(), TaskUIParseError, &m_pUIParser);
if (FAILED(hr))
return hr;
if (m_pUIParser->WasParseError())
return E_FAIL;
CWndClassInfo& wci = GetWndClassInfo();
if (!wci.m_atom)
{
// Modify wndclass here if necessary
wci.m_wc.style &= ~(CS_HREDRAW | CS_VREDRAW);
}
return S_OK;
}
HWND CTaskFrame::CreateFrameWindow(HWND hwndOwner, UINT nID, LPVOID pParam)
{
if (NULL == m_pPropertyBag)
return NULL;
// Register the AtlAxHost window class, etc.
AtlAxWinInit();
// Default window styles & dimensions
DWORD dwWndStyle = GetWndStyle(0); // WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN | WS_CLIPSIBLINGS
DWORD dwWndExStyle = GetWndExStyle(0); // WS_EX_APPWINDOW | WS_EX_WINDOWEDGE
RECT rcFrame = CWindow::rcDefault; // { CW_USEDEFAULT, CW_USEDEFAULT, 0, 0 }
CComVariant var;
// Get the initial window dimensions from the property bag
if (SUCCEEDED(_ReadProp(TS_PROP_WIDTH, VT_I4, var)))
{
rcFrame.right = rcFrame.left + var.lVal;
}
if (SUCCEEDED(_ReadProp(TS_PROP_HEIGHT, VT_I4, var)))
{
rcFrame.bottom = rcFrame.top + var.lVal;
}
// See if we're resizable. Default is TRUE;
m_bResizable = TRUE;
if (SUCCEEDED(_ReadProp(TS_PROP_RESIZABLE, VT_BOOL, var)))
{
m_bResizable = (VARIANT_TRUE == var.boolVal);
}
if (m_bResizable)
{
// Resizable: get minimum dimensions if provided
if (SUCCEEDED(_ReadProp(TS_PROP_MINWIDTH, VT_I4, var)))
{
m_ptMinSize.x = var.lVal;
}
if (SUCCEEDED(_ReadProp(TS_PROP_MINHEIGHT, VT_I4, var)))
{
m_ptMinSize.y = var.lVal;
}
}
else
{
// No resize: switch to a simple border style and don't allow maximize
dwWndStyle = (dwWndStyle & ~(WS_THICKFRAME | WS_MAXIMIZEBOX)) | WS_BORDER;
}
// See if we're modeless. Default is FALSE (modal).
BOOL bModeless = FALSE;
if (SUCCEEDED(_ReadProp(TS_PROP_MODELESS, VT_BOOL, var)))
{
bModeless = (VARIANT_TRUE == var.boolVal);
}
if (!bModeless)
{
// Modal
if (!m_bResizable)
dwWndExStyle |= WS_EX_DLGMODALFRAME;
// If not a top-level window, disallow minimize
if (hwndOwner)
dwWndStyle &= ~WS_MINIMIZEBOX;
}
// Get the application graphics
if (SUCCEEDED(_ReadProp(TS_PROP_WATERMARK, VT_BSTR, var)))
{
CComPtr<IStream> spStream;
HRESULT hr = BindToURL(var.bstrVal, &spStream);
if (SUCCEEDED(hr))
{
// Create GDI+ Bitmap from stream
delete m_pbmWatermark;
m_pbmWatermark = Bitmap::FromStream(spStream);
if (NULL != m_pbmWatermark && (Ok != m_pbmWatermark->GetLastStatus()))
{
delete m_pbmWatermark;
m_pbmWatermark = NULL;
}
// Later, when creating a page, set m_pbmWatermark as content of the
// "Picture" element
}
}
// Get the window title from the property bag
CComVariant varTitle;
if (FAILED(_ReadProp(TS_PROP_TITLE, VT_BSTR, varTitle)))
{
// Use NULL for no title
varTitle.bstrVal = NULL;
}
dwWndExStyle |= WS_EX_CONTROLPARENT;
return Create(hwndOwner, rcFrame, varTitle.bstrVal, dwWndStyle, dwWndExStyle, nID, pParam);
}
STDMETHODIMP CTaskFrame::ShowPage(REFCLSID rclsidNewPage, BOOL bTrimHistory)
{
HRESULT hr;
int iPage;
TaskPage *pSavePage = NULL;
if (!m_dpaHistory.IsValid())
return E_OUTOFMEMORY;
hr = S_OK;
// m_iCurrentPage = -1 should only occur when Count = 0
ASSERT(-1 != m_iCurrentPage || 0 == m_dpaHistory.Count());
// If we don't have any pages, then we can't trim the history
if (-1 == m_iCurrentPage)
bTrimHistory = FALSE;
// First remove any forward pages from the history.
// Note that we never remove the first page (index 0).
for (iPage = m_dpaHistory.Count() - 1; iPage > 0 && iPage > m_iCurrentPage; iPage--)
{
TaskPage *pPage = m_dpaHistory[iPage];
ASSERT(NULL != pPage);
// Optimization: if we are navigating forward and the next page
// is the page we want, go directly there and reinitialize it.
if (!bTrimHistory && iPage == m_iCurrentPage+1 && rclsidNewPage == pPage->GetID())
{
hr = _ActivatePage(iPage, TRUE);
if (SUCCEEDED(hr))
{
_SetNavBarState();
return hr;
}
}
m_dpaHistory.Remove(iPage);
// TODO OPTIMIZATION: cache the page
_DestroyPage(pPage);
}
// Either m_iCurrentPage = -1 and Count = 0, or
// m_iCurrentPage is the last page (Count-1) since
// we just truncated the history.
ASSERT(m_iCurrentPage + 1 == m_dpaHistory.Count());
iPage = m_iCurrentPage;
_DeactivateCurrentPage(); // sets m_iCurrentPage to -1
if (bTrimHistory)
{
// Can't delete this guy right right away since he's still
// processing messages (this is the page we just deactivated).
pSavePage = m_dpaHistory[iPage];
// Work backwards looking for rclsidNewPage, trimming as we go.
// Note that we never remove the first page (index 0).
while (0 < iPage)
{
TaskPage *pPage = m_dpaHistory[iPage];
ASSERT(NULL != pPage);
if (rclsidNewPage == pPage->GetID())
break;
m_dpaHistory.Remove(iPage);
if (pSavePage != pPage)
{
// TODO OPTIMIZATION: cache the page
_DestroyPage(pPage);
}
--iPage;
}
}
// Create a new page if necessary
TaskPage *pNewPage = NULL;
TaskPage *pCurrentPage = (-1 == iPage) ? NULL : m_dpaHistory[iPage];
if (NULL == pCurrentPage || rclsidNewPage != pCurrentPage->GetID())
{
hr = _CreatePage(rclsidNewPage, &pNewPage);
if (SUCCEEDED(hr))
{
iPage = m_dpaHistory.Append(pNewPage);
}
}
if (FAILED(hr) || -1 == iPage)
{
// Something bad happened, try to activate the home page
if (0 < m_dpaHistory.Count())
{
_ActivatePage(0);
}
if (NULL != pNewPage)
{
_DestroyPage(pNewPage);
}
}
else
{
// Show the page
hr = _ActivatePage(iPage, NULL != pNewPage ? FALSE : TRUE);
}
_SetNavBarState();
if (pSavePage)
{
// TODO: need to free this guy later (currently leaked)
}
return hr;
}
STDMETHODIMP CTaskFrame::Back(UINT cPages)
{
HRESULT hr;
if (-1 == m_iCurrentPage || 0 == m_dpaHistory.Count())
return E_UNEXPECTED;
hr = S_FALSE;
if (0 < m_iCurrentPage)
{
int iNewPage;
ASSERT(m_iCurrentPage < m_dpaHistory.Count());
if (0 == cPages)
iNewPage = m_iCurrentPage - 1;
else if (cPages > (UINT)m_iCurrentPage)
iNewPage = 0;
else // cPages > 0 && cPages <= m_iCurrentPage
iNewPage = m_iCurrentPage - cPages;
hr = _ActivatePage(iNewPage);
}
_SetNavBarState();
return hr;
}
STDMETHODIMP CTaskFrame::Forward()
{
HRESULT hr;
if (-1 == m_iCurrentPage || 0 == m_dpaHistory.Count())
return E_UNEXPECTED;
hr = S_FALSE;
int iNewPage = m_iCurrentPage + 1;
if (iNewPage < m_dpaHistory.Count())
{
hr = _ActivatePage(iNewPage);
}
_SetNavBarState();
return hr;
}
STDMETHODIMP CTaskFrame::Home()
{
if (-1 == m_iCurrentPage || 0 == m_dpaHistory.Count())
return E_UNEXPECTED;
HRESULT hr = _ActivatePage(0);
_SetNavBarState();
return hr;
}
STDMETHODIMP CTaskFrame::SetStatusText(LPCWSTR pszText)
{
if (NULL == m_hwndStatusBar)
return E_UNEXPECTED;
::SendMessageW(m_hwndStatusBar, SB_SETTEXT, SB_SIMPLEID, (LPARAM)pszText);
return S_OK;
}
HRESULT CTaskFrame::_ReadProp(LPCWSTR pszProp, VARTYPE vt, CComVariant& var)
{
HRESULT hr;
ASSERT(NULL != m_pPropertyBag);
var.Clear();
hr = m_pPropertyBag->Read(pszProp, &var, NULL);
if (SUCCEEDED(hr))
{
hr = var.ChangeType(vt);
}
return hr;
}
LRESULT CTaskFrame::_OnCreate(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM lParam, BOOL& bHandled)
{
BOOL bNavBar;
BOOL bStatusBar;
CComVariant var;
ASSERT(NULL != m_pPropertyBag);
// See if we're supposed to show the NavBar. Default is TRUE.
bNavBar = TRUE;
if (SUCCEEDED(_ReadProp(TS_PROP_NAVBAR, VT_BOOL, var)))
{
bNavBar = (VARIANT_TRUE == var.boolVal);
}
if (bNavBar)
{
_CreateNavBar();
}
// See if we're supposed to show a status bar. Default is FALSE.
bStatusBar = FALSE;
if (SUCCEEDED(_ReadProp(TS_PROP_STATUSBAR, VT_BOOL, var)))
{
bStatusBar = (VARIANT_TRUE == var.boolVal);
}
if (bStatusBar)
{
DWORD dwStyle = WS_CHILD | WS_VISIBLE | CCS_BOTTOM;
if (m_bResizable)
dwStyle |= SBARS_SIZEGRIP;
m_hwndStatusBar = CreateStatusWindowW(dwStyle, NULL, m_hWnd, IDC_STATUSBAR);
}
// Force m_rcPage to be calculated
LPCREATESTRUCT pcs = (LPCREATESTRUCT)lParam;
_OnSize(WM_SIZE, SIZE_RESTORED, MAKELONG(LOWORD(pcs->cx),LOWORD(pcs->cy)), bHandled);
return 0;
}
LRESULT CTaskFrame::_OnSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& /*bHandled*/)
{
if (SIZE_RESTORED == wParam || SIZE_MAXIMIZED == wParam)
{
GetClientRect(&m_rcPage);
if (m_hwndNavBar)
{
RECT rc;
::SendMessageW(m_hwndNavBar, uMsg, wParam, lParam);
::GetWindowRect(m_hwndNavBar, &rc);
m_rcPage.top += (rc.bottom - rc.top);
}
if (m_hwndStatusBar)
{
RECT rc;
::SendMessageW(m_hwndStatusBar, uMsg, wParam, lParam);
::GetWindowRect(m_hwndStatusBar, &rc);
m_rcPage.bottom -= (rc.bottom - rc.top);
}
// At this point, m_rcPage represents the remaining usable client
// area between the toolbar and statusbar.
if (-1 != m_iCurrentPage)
{
// Resize the current page. Other pages will be resized
// as necessary when we show them.
_SyncPageRect(m_dpaHistory[m_iCurrentPage]);
}
}
return 0;
}
LRESULT CTaskFrame::_OnTBGetInfoTip(int /*idCtrl*/, LPNMHDR pnmh, BOOL& /*bHandled*/)
{
LPNMTBGETINFOTIP pgit = (LPNMTBGETINFOTIP)pnmh;
::LoadStringW(_Module.GetResourceInstance(), pgit->iItem, pgit->pszText, pgit->cchTextMax);
return 0;
}
LRESULT CTaskFrame::_OnTBCustomDraw(int /*idCtrl*/, LPNMHDR pnmh, BOOL& bHandled)
{
LPNMCUSTOMDRAW pcd = (LPNMCUSTOMDRAW)pnmh;
switch (pcd->dwDrawStage)
{
case CDDS_PREPAINT:
return CDRF_NOTIFYITEMERASE;
case CDDS_PREERASE:
FillRect(pcd->hdc, &pcd->rc, GetSysColorBrush(COLOR_3DFACE));
break;
}
return CDRF_DODEFAULT;
}
LRESULT CTaskFrame::_OnAppCommand(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM lParam, BOOL& bHandled)
{
switch (GET_APPCOMMAND_LPARAM(lParam))
{
case APPCOMMAND_BROWSER_BACKWARD:
Back(1);
break;
case APPCOMMAND_BROWSER_FORWARD:
Forward();
break;
case APPCOMMAND_BROWSER_HOME:
Home();
break;
default:
bHandled = FALSE;
break;
}
return 0;
}
LRESULT CTaskFrame::_OnGetMinMaxInfo(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM lParam, BOOL& /*bHandled*/)
{
((LPMINMAXINFO)lParam)->ptMinTrackSize = m_ptMinSize;
return 0;
}
#define NAVBAR_CX 16
void CTaskFrame::_CreateNavBar()
{
HINSTANCE hInst = _Module.GetResourceInstance();
const DWORD dwStyle = WS_CHILD | WS_VISIBLE | CCS_TOP | TBSTYLE_FLAT | TBSTYLE_LIST | TBSTYLE_CUSTOMERASE | TBSTYLE_TOOLTIPS;
// Create the NavBar toolbar control
m_hwndNavBar = CreateWindowExW(TBSTYLE_EX_MIXEDBUTTONS /*| TBSTYLE_EX_DOUBLEBUFFER*/,
TOOLBARCLASSNAME,
NULL,
dwStyle,
0, 0, 0, 0,
m_hWnd,
(HMENU)IDC_NAVBAR,
hInst,
NULL);
if (m_hwndNavBar)
{
::SendMessageW(m_hwndNavBar, TB_BUTTONSTRUCTSIZE, sizeof(TBBUTTON), 0);
int idBmp = IDB_NAVBAR;
if (SHGetCurColorRes() > 8)
idBmp += (IDB_NAVBARHICOLOR - IDB_NAVBAR);
m_himlNBDef = ImageList_LoadImageW(hInst,
MAKEINTRESOURCE(idBmp),
NAVBAR_CX,
0,
CLR_DEFAULT,
IMAGE_BITMAP,
LR_CREATEDIBSECTION);
if (m_himlNBDef)
::SendMessageW(m_hwndNavBar, TB_SETIMAGELIST, 0, (LPARAM)m_himlNBDef);
m_himlNBHot = ImageList_LoadImageW(hInst,
MAKEINTRESOURCE(idBmp+1),
NAVBAR_CX,
0,
CLR_DEFAULT,
IMAGE_BITMAP,
LR_CREATEDIBSECTION);
if (m_himlNBHot)
::SendMessageW(m_hwndNavBar, TB_SETHOTIMAGELIST, 0, (LPARAM)m_himlNBHot);
if (!m_himlNBDef && !m_himlNBHot)
{
// Must be serious low memory or other resource problems.
// There's no point having a toolbar without any images.
::DestroyWindow(m_hwndNavBar);
m_hwndNavBar = NULL;
}
else
{
TCHAR szBack[64];
TBBUTTON rgButtons[] =
{
{0, ID_BACK, TBSTATE_ENABLED, BTNS_BUTTON | BTNS_AUTOSIZE | BTNS_SHOWTEXT, {0}, 0, (INT_PTR)szBack},
{1, ID_FORWARD, TBSTATE_ENABLED, BTNS_BUTTON | BTNS_AUTOSIZE, {0}, 0, 0},
{2, ID_HOME, TBSTATE_ENABLED, BTNS_BUTTON | BTNS_AUTOSIZE, {0}, 0, 0},
};
::LoadStringW(hInst, ID_BACK, szBack, ARRAYSIZE(szBack));
::SendMessageW(m_hwndNavBar, TB_ADDBUTTONSW, ARRAYSIZE(rgButtons), (LPARAM)rgButtons);
// This happens in _OnSize
//::SendMessageW(m_hwndNavBar, TB_AUTOSIZE, 0, 0);
}
_SetNavBarState();
}
}
void CTaskFrame::_SetNavBarState()
{
if (m_hwndNavBar)
{
::SendMessage(m_hwndNavBar, TB_ENABLEBUTTON, ID_BACK, MAKELONG((m_iCurrentPage > 0), 0));
::SendMessage(m_hwndNavBar, TB_ENABLEBUTTON, ID_HOME, MAKELONG((m_iCurrentPage > 0), 0));
::SendMessage(m_hwndNavBar, TB_ENABLEBUTTON, ID_FORWARD, MAKELONG((m_iCurrentPage < m_dpaHistory.Count() - 1), 0));
}
}
HRESULT CTaskFrame::_CreatePage(REFCLSID rclsidPage, TaskPage **ppPage)
{
HRESULT hr;
ASSERT(NULL != ppPage);
*ppPage = NULL;
if (NULL == m_pPageFactory || NULL == m_pUIParser)
return E_UNEXPECTED;
// Get this page's ITaskPage interface from the App
CComPtr<ITaskPage> spTaskPage;
hr = m_pPageFactory->CreatePage(rclsidPage, IID_ITaskPage, (void**)&spTaskPage.p);
if (S_OK == hr)
{
// Give the ITaskPage our ITaskFrame interface
CComQIPtr<ITaskFrame> spThis(this);
if (spThis)
spTaskPage->SetFrame(spThis);
// Create an HWNDElement to contain and layout the page content
TaskPage *pNewPage;
hr = TaskPage::Create(rclsidPage, m_hWnd, &pNewPage);
if (SUCCEEDED(hr))
{
Element* pe; // dummy
// Fill contents from markup using substitution
hr = m_pUIParser->CreateElement(L"main", pNewPage, &pe);
if (SUCCEEDED(hr))
{
Element::StartDefer();
_SyncPageRect(pNewPage);
// Some examples of ways to add graphics to the page
Element* pe = pNewPage->FindDescendent(StrToID(L"Picture"));
//pe->SetContentGraphic(L"C:\\windows\\ua_bkgnd.bmp", GRAPHIC_EntireAlpha, 64);
//pe->SetContentGraphic(L"C:\\windows\\ua_bkgnd.bmp", GRAPHIC_TransColorAuto);
//Value* pv = Value::CreateGraphic(MAKEINTRESOURCE(IDB_BACKGROUND), GRAPHIC_TransColorAuto, 0, 0, 0, _Module.GetResourceInstance());
//pe->SetValue(Element::ContentProp, PI_Local, pv);
//pv->Release();
#ifdef GADGET_ENABLE_GDIPLUS
if (NULL != m_pbmWatermark)
{
Value* pv = Value::CreateGraphic(m_pbmWatermark);
pe->SetValue(Element::ContentProp, PI_Local, pv);
pv->Release();
}
#endif
hr = pNewPage->CreateContent(spTaskPage);
Element::EndDefer();
}
if (SUCCEEDED(hr))
{
*ppPage = pNewPage;
}
else
{
_DestroyPage(pNewPage);
}
}
}
return hr;
}
HRESULT CTaskFrame::_ActivatePage(int iPage, BOOL bInit)
{
HRESULT hr = S_OK;
ASSERT(m_dpaHistory.IsValid());
ASSERT(0 < m_dpaHistory.Count());
ASSERT(iPage >= 0 && iPage < m_dpaHistory.Count());
TaskPage *pPage = m_dpaHistory[iPage];
ASSERT(NULL != pPage);
if (bInit)
{
hr = pPage->Reinitialize();
if (FAILED(hr))
{
// Can't reinitialize? Create a new instance instead.
TaskPage *pNewPage = NULL;
hr = _CreatePage(pPage->GetID(), &pNewPage);
if (SUCCEEDED(hr))
{
m_dpaHistory.Set(iPage, pNewPage);
_DestroyPage(pPage);
pPage = pNewPage;
}
}
}
if (SUCCEEDED(hr))
{
if (m_iCurrentPage != iPage)
{
_DeactivateCurrentPage();
}
// In case we were resized since we last showed this page
_SyncPageRect(pPage);
m_iCurrentPage = iPage;
::ShowWindow(pPage->GetHWND(), SW_SHOW);
::SetFocus(pPage->GetHWND());
}
return hr;
}
HRESULT CTaskFrame::_DeactivateCurrentPage()
{
if (-1 != m_iCurrentPage)
{
ASSERT(m_dpaHistory.IsValid());
ASSERT(m_iCurrentPage >= 0 && m_iCurrentPage < m_dpaHistory.Count());
TaskPage *pPage = m_dpaHistory[m_iCurrentPage];
ASSERT(NULL != pPage);
m_iCurrentPage = -1;
::ShowWindow(pPage->GetHWND(), SW_HIDE);
}
return S_OK;
}
void CTaskFrame::_SyncPageRect(TaskPage* pPage)
{
if (NULL != pPage)
{
Element::StartDefer();
pPage->SetX(m_rcPage.left);
pPage->SetY(m_rcPage.top);
pPage->SetWidth(m_rcPage.right-m_rcPage.left);
pPage->SetHeight(m_rcPage.bottom-m_rcPage.top);
Element::EndDefer();
}
}
void CTaskFrame::_DestroyPage(TaskPage* pPage)
{
if (NULL != pPage)
{
HWND hwndPage = pPage->GetHWND();
if (NULL != hwndPage && ::IsWindow(hwndPage))
{
// This causes pPage to be deleted
::DestroyWindow(hwndPage);
}
else
{
// If the window exists, this would not destroy it, so only
// do this when there is no window.
delete pPage;
}
}
}