今天和同事说到C++模板会使代码膨胀, 可同事觉得不会。
同事的依据是: 如果模板会使代码膨胀, 那么ATL和WTL里为什么还要大量使用模板? 同样功能 ,ATL和WTL编译出的可执行文件可比MFC编译的要小的多。
我当时一愣 ,事实确实如同事所说,难道模板会使代码膨胀的观点是错误的吗?
MFC因为本身代码量和复杂性在那里, 所以它生成比较大的exe无可厚非。我们这里重点关注为什么ATL/WTL使用模板,但是却不会使生成的exe变大。
我们知道使用模板时, 同一模板生成不同的模板实类后会是多份代码 ,比如 vector<int>, vector<char>, vector<double>, 这里总共会生成3份不同的vector代码,这就是我们平时所说的代码膨胀。
那么为什么ATL/WTL就没有代码膨胀的问题呢?
我这里以 ATL里的窗口代码为例来分析这个问题,因为我对WinDbg比较熟悉,下面我会以WinDbg为工具来分析我以前的写得那个俄罗斯方块程序。
首先我们看一下ATL的窗口代码:
template <
class
T,
class
TBase
/*
= CWindow
*/
,
class
TWinTraits
/*
= CControlWinTraits
*/
>
class
ATL_NO_VTABLE CWindowImpl :
public
CWindowImplBaseT< TBase, TWinTraits >
{
public
:
DECLARE_WND_CLASS(NULL)
static
LPCTSTR GetWndCaption()
{
return
NULL;
}
HWND Create(HWND hWndParent, _U_RECT rect = NULL, LPCTSTR szWindowName = NULL,
DWORD dwStyle = 0, DWORD dwExStyle = 0,
_U_MENUorID MenuOrID = 0U, LPVOID lpCreateParam = NULL)
{
if
(T::GetWndClassInfo().m_lpszOrigName == NULL)
T::GetWndClassInfo().m_lpszOrigName = GetWndClassName();
ATOM atom = T::GetWndClassInfo().Register(&m_pfnSuperWindowProc);
dwStyle = T::GetWndStyle(dwStyle);
dwExStyle = T::GetWndExStyle(dwExStyle);
//
set caption
if
(szWindowName == NULL)
szWindowName = T::GetWndCaption();
return
CWindowImplBaseT< TBase, TWinTraits >::Create(hWndParent, rect, szWindowName,
dwStyle, dwExStyle, MenuOrID, atom, lpCreateParam);
}
};
上面是一个模板类,它应该会生成多份模板实例代码:我们可以用WinDbg的符号搜索命令来做验证:
输入 x HYTeris!ATL::CWindowImpl<* , 搜索所有以 HYTeris!ATL::CWindowImpl< 开头的符号
0:000> x HYTeris!ATL::CWindowImpl<*
004592f0 HYTeris!ATL::CWindowImpl<CTsButton,WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
004343a0 HYTeris!ATL::CWindowImpl<CTsMainStatusPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsMainStatusPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00437c90 HYTeris!ATL::CWindowImpl<CTsMainControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
00430440 HYTeris!ATL::CWindowImpl<CTsGameMainWnd,ATL::CWindow,ATL::CWinTraits<114229248,262400> >::CWindowImpl<CTsGameMainWnd,ATL::CWindow,ATL::CWinTraits<114229248,262400> > (
void
)
0041c990 HYTeris!ATL::CWindowImpl<CTsAgentWindow,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
0044cf50 HYTeris!ATL::CWindowImpl<CTsNextElementContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsNextElementContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
004539a0 HYTeris!ATL::CWindowImpl<CTsMutiScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
00435800 HYTeris!ATL::CWindowImpl<CTsGameMainWnd,ATL::CWindow,ATL::CWinTraits<114229248,262400> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
00434640 HYTeris!ATL::CWindowImpl<CTsKeyEdit,WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsKeyEdit,WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > (
void
)
00437440 HYTeris!ATL::CWindowImpl<CTsGameMainWnd,ATL::CWindow,ATL::CWinTraits<114229248,262400> >::GetWndCaption (
void
)
00436020 HYTeris!ATL::CWindowImpl<CTsMainButtonPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
00453f70 HYTeris!ATL::CWindowImpl<CTsNextElementContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
00424e30 HYTeris!ATL::CWindowImpl<CTsDisplayContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsDisplayContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
004338a0 HYTeris!ATL::CWindowImpl<CTsMainButtonPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsMainButtonPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
0041c4f0 HYTeris!ATL::CWindowImpl<CTsAgentWindow,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
00441b50 HYTeris!ATL::CWindowImpl<CTsKeyEdit,WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsKeyEdit,WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > (
void
)
004365f0 HYTeris!ATL::CWindowImpl<CTsMainControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
00455120 HYTeris!ATL::CWindowImpl<CTsButton,WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsButton,WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > (
void
)
0040ea20 HYTeris!ATL::CWindowImpl<CTsDisplayContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
00453fa0 HYTeris!ATL::CWindowImpl<CTsSingleScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
0041abc0 HYTeris!ATL::CWindowImpl<CTsAgentWindow,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsAgentWindow,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00459c20 HYTeris!ATL::CWindowImpl<CTsSubControlContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsSubControlContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
0045f640 HYTeris!ATL::CWindowImpl<CTsUserListCtrl,WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
004608a0 HYTeris!ATL::CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndClassInfo (
void
)
0045fed0 HYTeris!ATL::CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
00433a70 HYTeris!ATL::CWindowImpl<CTsMainControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsMainControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00437c60 HYTeris!ATL::CWindowImpl<CTsMainStatusPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
0044fb70 HYTeris!ATL::CWindowImpl<CTsMainDisplayPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsMainDisplayPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
0041acf0 HYTeris!ATL::CWindowImpl<CTsAgentWindow,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsAgentWindow,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00459510 HYTeris!ATL::CWindowImpl<CTsButton,WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
00437a90 HYTeris!ATL::CWindowImpl<CTsMainButtonPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
00430490 HYTeris!ATL::CWindowImpl<CTsGameMainWnd,ATL::CWindow,ATL::CWinTraits<114229248,262400> >::~CWindowImpl<CTsGameMainWnd,ATL::CWindow,ATL::CWinTraits<114229248,262400> > (
void
)
00424de0 HYTeris!ATL::CWindowImpl<CTsDisplayContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsDisplayContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00433ac0 HYTeris!ATL::CWindowImpl<CTsMainControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsMainControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00433850 HYTeris!ATL::CWindowImpl<CTsMainButtonPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsMainButtonPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00433b60 HYTeris!ATL::CWindowImpl<CTsMainStatusPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsMainStatusPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00452050 HYTeris!ATL::CWindowImpl<CTsMutiScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsMutiScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
0044f8e0 HYTeris!ATL::CWindowImpl<CTsMainDisplayPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsMainDisplayPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
0044cec0 HYTeris!ATL::CWindowImpl<CTsNextElementContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsNextElementContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
004340e0 HYTeris!ATL::CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00433ef0 HYTeris!ATL::CWindowImpl<CTsButton,WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsButton,WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > (
void
)
004348c0 HYTeris!ATL::CWindowImpl<CTsUserListCtrl,WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::~CWindowImpl<CTsUserListCtrl,WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > > (
void
)
004535b0 HYTeris!ATL::CWindowImpl<CTsNextElementContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
00454170 HYTeris!ATL::CWindowImpl<CTsMutiScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
00459c70 HYTeris!ATL::CWindowImpl<CTsSubControlContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsSubControlContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00451ed0 HYTeris!ATL::CWindowImpl<CTsSingleScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsSingleScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00451f20 HYTeris!ATL::CWindowImpl<CTsSingleScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsSingleScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
0045c4b0 HYTeris!ATL::CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00436320 HYTeris!ATL::CWindowImpl<CTsMainStatusPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
004536a0 HYTeris!ATL::CWindowImpl<CTsSingleScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
004604a0 HYTeris!ATL::CWindowImpl<CTsUserListCtrl,WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::GetWndCaption (
void
)
0040eca0 HYTeris!ATL::CWindowImpl<CTsDisplayContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
0045ff90 HYTeris!ATL::CWindowImpl<CTsSubControlContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
00437cc0 HYTeris!ATL::CWindowImpl<CTsMainDisplayPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
004366e0 HYTeris!ATL::CWindowImpl<CTsMainDisplayPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
0045e620 HYTeris!ATL::CWindowImpl<CTsSubControlContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
004608d0 HYTeris!ATL::CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndCaption (
void
)
004520a0 HYTeris!ATL::CWindowImpl<CTsMutiScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImpl<CTsMutiScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
0045d210 HYTeris!ATL::CWindowImpl<CTsUserListCtrl,WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::CWindowImpl<CTsUserListCtrl,WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > > (
void
)
004d84a8 HYTeris!ATL::CWindowImpl<CTsMainControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d84b8 HYTeris!ATL::CWindowImpl<CTsMainControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d7970 HYTeris!ATL::CWindowImpl<CTsAgentWindow,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d7960 HYTeris!ATL::CWindowImpl<CTsAgentWindow,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d914c HYTeris!ATL::CWindowImpl<CTsSubControlContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d8dd0 HYTeris!ATL::CWindowImpl<CTsMutiScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d8b04 HYTeris!ATL::CWindowImpl<CTsMainDisplayPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d8b14 HYTeris!ATL::CWindowImpl<CTsMainDisplayPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d8ae8 HYTeris!ATL::CWindowImpl<CTsMainDisplayPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004e31b8 HYTeris!ATL::CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004e2980 HYTeris!ATL::CWindowImpl<CTsMainDisplayPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d88c4 HYTeris!ATL::CWindowImpl<CTsKeyEdit,WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d8330 HYTeris!ATL::CWindowImpl<CTsMainButtonPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d88f0 HYTeris!ATL::CWindowImpl<CTsKeyEdit,WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d88e0 HYTeris!ATL::CWindowImpl<CTsKeyEdit,WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d8a40 HYTeris!ATL::CWindowImpl<CTsNextElementContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004e30f0 HYTeris!ATL::CWindowImpl<CTsSubControlContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d8a5c HYTeris!ATL::CWindowImpl<CTsNextElementContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d8a6c HYTeris!ATL::CWindowImpl<CTsNextElementContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004e21d0 HYTeris!ATL::CWindowImpl<CTsMainStatusPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d8c70 HYTeris!ATL::CWindowImpl<CTsSingleScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004e2e78 HYTeris!ATL::CWindowImpl<CTsButton,WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004e1f00 HYTeris!ATL::CWindowImpl<CTsGameMainWnd,ATL::CWindow,ATL::CWinTraits<114229248,262400> > `RTTI Type Descriptor' = <no type information>
004d9208 HYTeris!ATL::CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d9218 HYTeris!ATL::CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004e1ad8 HYTeris!ATL::CWindowImpl<CTsDisplayContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d834c HYTeris!ATL::CWindowImpl<CTsMainButtonPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d835c HYTeris!ATL::CWindowImpl<CTsMainButtonPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d8c9c HYTeris!ATL::CWindowImpl<CTsSingleScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d8c8c HYTeris!ATL::CWindowImpl<CTsSingleScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d856c HYTeris!ATL::CWindowImpl<CTsMainStatusPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d855c HYTeris!ATL::CWindowImpl<CTsMainStatusPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004e2bb8 HYTeris!ATL::CWindowImpl<CTsMutiScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d7fa0 HYTeris!ATL::CWindowImpl<CTsDisplayContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d7fb0 HYTeris!ATL::CWindowImpl<CTsDisplayContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d91ec HYTeris!ATL::CWindowImpl<CTsSingleControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004e2048 HYTeris!ATL::CWindowImpl<CTsMainButtonPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d8174 HYTeris!ATL::CWindowImpl<CTsGameMainWnd,ATL::CWindow,ATL::CWinTraits<114229248,262400> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d8184 HYTeris!ATL::CWindowImpl<CTsGameMainWnd,ATL::CWindow,ATL::CWinTraits<114229248,262400> >::`RTTI Base Class Array' = <no type information>
004d8dfc HYTeris!ATL::CWindowImpl<CTsMutiScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d8dec HYTeris!ATL::CWindowImpl<CTsMutiScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004e2728 HYTeris!ATL::CWindowImpl<CTsKeyEdit,WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004e28c8 HYTeris!ATL::CWindowImpl<CTsNextElementContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d8fac HYTeris!ATL::CWindowImpl<CTsButton,WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d8f9c HYTeris!ATL::CWindowImpl<CTsButton,WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d848c HYTeris!ATL::CWindowImpl<CTsMainControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d8f80 HYTeris!ATL::CWindowImpl<CTsButton,WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d8158 HYTeris!ATL::CWindowImpl<CTsGameMainWnd,ATL::CWindow,ATL::CWinTraits<114229248,262400> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d8540 HYTeris!ATL::CWindowImpl<CTsMainStatusPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d7944 HYTeris!ATL::CWindowImpl<CTsAgentWindow,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d7f84 HYTeris!ATL::CWindowImpl<CTsDisplayContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004e2aa0 HYTeris!ATL::CWindowImpl<CTsSingleScoreContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d9168 HYTeris!ATL::CWindowImpl<CTsSubControlContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d9178 HYTeris!ATL::CWindowImpl<CTsSubControlContainer,ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004e1628 HYTeris!ATL::CWindowImpl<CTsAgentWindow,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004e2148 HYTeris!ATL::CWindowImpl<CTsMainControlPane,ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d95c4 HYTeris!ATL::CWindowImpl<CTsUserListCtrl,WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::`RTTI Base Class Array' = <no type information>
004d95b4 HYTeris!ATL::CWindowImpl<CTsUserListCtrl,WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::`RTTI Class Hierarchy Descriptor' = <no type information>
004e3400 HYTeris!ATL::CWindowImpl<CTsUserListCtrl,WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > > `RTTI Type Descriptor' = <no type information>
004d9598 HYTeris!ATL::CWindowImpl<CTsUserListCtrl,WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
上面的符号可以验证我们多份实例的猜想。
可以看到
CWindowImpl和我们的窗口继承类(T),窗口基类(TBase), 窗口风格(
TWinTraits
) 相关,所以数量很多 。
那么为什么这么多的符号,也就是这么多的函数代码 ,exe大小没有被撑大?
那时因为
CWindowImpl类
函数本身很小, 我们从函数的 代码量上就可以看出来。
用同样的方法 ,我们可以继续分析
CWindowImplBaseT
template <
class
TBase = CWindow,
class
TWinTraits = CControlWinTraits>
class
ATL_NO_VTABLE CWindowImplBaseT :
public
CWindowImplRoot< TBase >
{
public
:
WNDPROC m_pfnSuperWindowProc;
CWindowImplBaseT() : m_pfnSuperWindowProc(::DefWindowProc)
{}
static
DWORD GetWndStyle(DWORD dwStyle)
{
return
TWinTraits::GetWndStyle(dwStyle);
}
static
DWORD GetWndExStyle(DWORD dwExStyle)
{
return
TWinTraits::GetWndExStyle(dwExStyle);
}
virtual
WNDPROC GetWindowProc()
{
return
WindowProc;
}
static
LRESULT CALLBACK StartWindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
static
LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
HWND Create(HWND hWndParent, _U_RECT rect, LPCTSTR szWindowName,
DWORD dwStyle, DWORD dwExStyle, _U_MENUorID MenuOrID, ATOM atom, LPVOID lpCreateParam = NULL);
BOOL DestroyWindow()
{
ATLASSERT(::IsWindow(m_hWnd));
return
::DestroyWindow(m_hWnd);
}
BOOL SubclassWindow(HWND hWnd);
HWND UnsubclassWindow(BOOL bForce = FALSE);
LRESULT DefWindowProc()
{
const
_ATL_MSG* pMsg = m_pCurrentMsg;
LRESULT lRes = 0;
if
(pMsg != NULL)
lRes = DefWindowProc(pMsg->message, pMsg->wParam, pMsg->lParam);
return
lRes;
}
LRESULT DefWindowProc(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
#ifdef STRICT
return
::CallWindowProc(m_pfnSuperWindowProc, m_hWnd, uMsg, wParam, lParam);
#else
return
::CallWindowProc((FARPROC)m_pfnSuperWindowProc, m_hWnd, uMsg, wParam, lParam);
#endif
}
virtual
void
OnFinalMessage(HWND
/*
hWnd
*/
)
{
//
override to do something, if needed
}
};
0:000> x HYTeris!ATL::CWindowImplBaseT<*
0040f170 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID, unsigned
short
,
void
*)
0040ec20 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndStyle (unsigned
long
)
00435970 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::OnFinalMessage (
struct
HWND__ *)
004604d0 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::GetWndStyle (unsigned
long
)
00434a10 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::~CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > (
void
)
0040ec60 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWndExStyle (unsigned
long
)
00461740 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::WindowProc (
struct
HWND__ *, unsigned
int
, unsigned
int
,
long
)
0044c040 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::WindowProc (
struct
HWND__ *, unsigned
int
, unsigned
int
,
long
)
004346e0 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::~CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > (
void
)
0041c440 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00435940 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::GetWindowProc (
void
)
00459580 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::GetWndExStyle (unsigned
long
)
00461950 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID, unsigned
short
,
void
*)
004395b0 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::StartWindowProc (
struct
HWND__ *, unsigned
int
, unsigned
int
,
long
)
00439ea0 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::DefWindowProcW (unsigned
int
, unsigned
int
,
long
)
00461620 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::StartWindowProc (
struct
HWND__ *, unsigned
int
, unsigned
int
,
long
)
004596e0 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID, unsigned
short
,
void
*)
0041ced0 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::WindowProc (
struct
HWND__ *, unsigned
int
, unsigned
int
,
long
)
0044c370 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::UnsubclassWindow (
int
)
00460510 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::GetWndExStyle (unsigned
long
)
00457f70 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::WindowProc (
struct
HWND__ *, unsigned
int
, unsigned
int
,
long
)
0045f830 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::GetWindowProc (
void
)
00457820 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > (
void
)
004374b0 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::GetWndExStyle (unsigned
long
)
00434ad0 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::~CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > > (
void
)
004595c0 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::StartWindowProc (
struct
HWND__ *, unsigned
int
, unsigned
int
,
long
)
004358f0 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> > (
void
)
00445920 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::OnFinalMessage (
struct
HWND__ *)
00461ad0 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::DefWindowProcW (unsigned
int
, unsigned
int
,
long
)
0041c4c0 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::OnFinalMessage (
struct
HWND__ *)
00437470 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::GetWndStyle (unsigned
long
)
004398e0 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::Create (
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID, unsigned
short
,
void
*)
0040ed50 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::StartWindowProc (
struct
HWND__ *, unsigned
int
, unsigned
int
,
long
)
004458a0 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > (
void
)
0045f7e0 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > > (
void
)
0041ad30 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::~CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> > (
void
)
00430550 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::~CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> > (
void
)
0045f860 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::OnFinalMessage (
struct
HWND__ *)
004582a0 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::UnsubclassWindow (
int
)
0041c490 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::GetWindowProc (
void
)
0044cb50 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::DefWindowProcW (unsigned
int
, unsigned
int
,
long
)
0044c250 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::SubclassWindow (
struct
HWND__ *)
004458f0 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::GetWindowProc (
void
)
00459540 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::GetWndStyle (unsigned
long
)
00458180 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::SubclassWindow (
struct
HWND__ *)
00457870 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::GetWindowProc (
void
)
00457910 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::OnFinalMessage (
struct
HWND__ *)
0040e990 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::DestroyWindow (
void
)
004396d0 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::WindowProc (
struct
HWND__ *, unsigned
int
, unsigned
int
,
long
)
0041d1c0 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::DefWindowProcW (unsigned
int
, unsigned
int
,
long
)
004578a0 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::DefWindowProcW (unsigned
int
, unsigned
int
,
long
)
004d8fc8 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d8ff4 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d8fe4 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d79b4 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d79a4 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004e2798 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d819c HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d8938 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Array' = <no type information>
004d8928 HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d960c HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::`RTTI Base Class Array' = <no type information>
004d95fc HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::`RTTI Class Hierarchy Descriptor' = <no type information>
004e2ee8 HYTeris!ATL::CWindowImplBaseT<WTL::CButtonT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d81c8 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::`RTTI Base Class Array' = <no type information>
004d81b8 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004e34a0 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > > `RTTI Type Descriptor' = <no type information>
004d95e0 HYTeris!ATL::CWindowImplBaseT<WTL::CListViewCtrlT<ATL::CWindow>,ATL::CWinTraitsOR<32777,0,ATL::CWinTraits<1442840576,0> > >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004e1f68 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<114229248,262400> > `RTTI Type Descriptor' = <no type information>
004e1688 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> > `RTTI Type Descriptor' = <no type information>
004d7988 HYTeris!ATL::CWindowImplBaseT<ATL::CWindow,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d890c HYTeris!ATL::CWindowImplBaseT<WTL::CEditT<ATL::CWindow>,ATL::CWinTraits<1442840576,0> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
可以看到 CWindowImplBaseT只与 窗口基类和窗口风格相关 ,数量 已经减小很多 ,CWindowImplBaseT模板类本身函数数量不多 ,函数代码量大小也不大 。
然后再看CWindowImplRoot,
template <
class
TBase
/*
= CWindow
*/
>
class
ATL_NO_VTABLE CWindowImplRoot :
public
TBase,
public
CMessageMap
{
public
:
CWndProcThunk m_thunk;
const
_ATL_MSG* m_pCurrentMsg;
DWORD m_dwState;
enum
{ WINSTATE_DESTROYED = 0x00000001 };
//
Constructor/destructor
CWindowImplRoot() : m_pCurrentMsg(NULL), m_dwState(0)
{ }
virtual
~CWindowImplRoot()
{
#ifdef _DEBUG
if
(m_hWnd != NULL)
//
should be cleared in WindowProc
{
ATLTRACE(atlTraceWindowing, 0, _T("ERROR - Object deleted before window was destroyed\n"));
ATLASSERT(FALSE);
}
#endif
//
_DEBUG
}
//
Current message
const
_ATL_MSG* GetCurrentMessage()
const
{
return
m_pCurrentMsg;
}
//
"handled" management for cracked handlers
BOOL IsMsgHandled()
const
{
const
_ATL_MSG* pMsg = GetCurrentMessage();
ATLASSERT(pMsg != NULL);
ATLASSERT(pMsg->cbSize >=
sizeof
(_ATL_MSG));
return
pMsg->bHandled;
}
void
SetMsgHandled(BOOL bHandled)
{
_ATL_MSG* pMsg = (_ATL_MSG*)GetCurrentMessage();
//
override const
ATLASSERT(pMsg != NULL);
ATLASSERT(pMsg->cbSize >=
sizeof
(_ATL_MSG));
pMsg->bHandled = bHandled;
}
//
Message forwarding and reflection support
LRESULT ForwardNotifications(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT ReflectNotifications(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
static
BOOL DefaultReflectionHandler(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT& lResult);
};
0:000> x HYTeris!ATL::CWindowImplRoot*
004364d0 HYTeris!ATL::CWindowImplRoot<WTL::CListViewCtrlT<ATL::CWindow> >::~CWindowImplRoot<WTL::CListViewCtrlT<ATL::CWindow> > (
void
)
004367d0 HYTeris!ATL::CWindowImplRoot<WTL::CEditT<ATL::CWindow> >::~CWindowImplRoot<WTL::CEditT<ATL::CWindow> > (
void
)
00457c30 HYTeris!ATL::CWindowImplRoot<WTL::CButtonT<ATL::CWindow> >::CWindowImplRoot<WTL::CButtonT<ATL::CWindow> > (
void
)
00460550 HYTeris!ATL::CWindowImplRoot<WTL::CListViewCtrlT<ATL::CWindow> >::CWindowImplRoot<WTL::CListViewCtrlT<ATL::CWindow> > (
void
)
004479d0 HYTeris!ATL::CWindowImplRoot<WTL::CEditT<ATL::CWindow> >::CWindowImplRoot<WTL::CEditT<ATL::CWindow> > (
void
)
0041c360 HYTeris!ATL::CWindowImplRoot<ATL::CWindow>::~CWindowImplRoot<ATL::CWindow> (
void
)
00435f40 HYTeris!ATL::CWindowImplRoot<WTL::CButtonT<ATL::CWindow> >::~CWindowImplRoot<WTL::CButtonT<ATL::CWindow> > (
void
)
004613f0 HYTeris!ATL::CWindowImplRoot<ATL::CWindow>::ForwardNotifications (unsigned
int
, unsigned
int
,
long
,
int
*)
00438f50 HYTeris!ATL::CWindowImplRoot<ATL::CWindow>::ReflectNotifications (unsigned
int
, unsigned
int
,
long
,
int
*)
0041c8e0 HYTeris!ATL::CWindowImplRoot<ATL::CWindow>::CWindowImplRoot<ATL::CWindow> (
void
)
004e2800 HYTeris!ATL::CWindowImplRoot<WTL::CEditT<ATL::CWindow> > `RTTI Type Descriptor' = <no type information>
004d897c HYTeris!ATL::CWindowImplRoot<WTL::CEditT<ATL::CWindow> >::`RTTI Base Class Array' = <no type information>
004d896c HYTeris!ATL::CWindowImplRoot<WTL::CEditT<ATL::CWindow> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d9640 HYTeris!ATL::CWindowImplRoot<WTL::CListViewCtrlT<ATL::CWindow> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d9650 HYTeris!ATL::CWindowImplRoot<WTL::CListViewCtrlT<ATL::CWindow> >::`RTTI Base Class Array' = <no type information>
004d8950 HYTeris!ATL::CWindowImplRoot<WTL::CEditT<ATL::CWindow> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d9028 HYTeris!ATL::CWindowImplRoot<WTL::CButtonT<ATL::CWindow> >::`RTTI Class Hierarchy Descriptor' = <no type information>
004d9038 HYTeris!ATL::CWindowImplRoot<WTL::CButtonT<ATL::CWindow> >::`RTTI Base Class Array' = <no type information>
004e16dc HYTeris!ATL::CWindowImplRoot<ATL::CWindow> `RTTI Type Descriptor' = <no type information>
004e3530 HYTeris!ATL::CWindowImplRoot<WTL::CListViewCtrlT<ATL::CWindow> > `RTTI Type Descriptor' = <no type information>
004d9624 HYTeris!ATL::CWindowImplRoot<WTL::CListViewCtrlT<ATL::CWindow> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d79c8 HYTeris!ATL::CWindowImplRoot<ATL::CWindow>::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004e2f58 HYTeris!ATL::CWindowImplRoot<WTL::CButtonT<ATL::CWindow> > `RTTI Type Descriptor' = <no type information>
004d79f4 HYTeris!ATL::CWindowImplRoot<ATL::CWindow>::`RTTI Base Class Array' = <no type information>
004d79e4 HYTeris!ATL::CWindowImplRoot<ATL::CWindow>::`RTTI Class Hierarchy Descriptor' = <no type information>
004d900c HYTeris!ATL::CWindowImplRoot<WTL::CButtonT<ATL::CWindow> >::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
可以看到 CWindowImplRoot只和窗口基类(CWindow)相关 ,所以 相关的符号就更少了。
最后我们再看一下CWindow:
0:000> x HYTeris!ATL::CWindow::*
004e1000 HYTeris!ATL::CWindow::rcDefault =
struct
tagRECT
00442a20 HYTeris!ATL::CWindow::DestroyWindow (
void
)
00425730 HYTeris!ATL::CWindow::InvalidateRect (
struct
tagRECT *,
int
)
00442340 HYTeris!ATL::CWindow::CenterWindow (
struct
HWND__ *)
00425850 HYTeris!ATL::CWindow::UpdateWindow (
void
)
0041c950 HYTeris!ATL::CWindow::CWindow (
struct
HWND__ *)
004391e0 HYTeris!ATL::CWindow::GetDlgItem (
int
)
004568a0 HYTeris!ATL::CWindow::SetWindowRgn (
struct
HRGN__ *,
int
)
00441d20 HYTeris!ATL::CWindow::GetWindowLongW (
int
)
00444350 HYTeris!ATL::CWindow::Create (wchar_t *,
struct
HWND__ *,
class
ATL::_U_RECT, wchar_t *, unsigned
long
, unsigned
long
,
class
ATL::_U_MENUorID,
void
*)
004391b0 HYTeris!ATL::CWindow::
operator
HWND__ * (
void
)
00459080 HYTeris!ATL::CWindow::EnableWindow (
int
)
00425140 HYTeris!ATL::CWindow::GetClientRect (
struct
tagRECT *)
00430c70 HYTeris!ATL::CWindow::SetWindowTextW (wchar_t *)
0040eb30 HYTeris!ATL::CWindow::GetWndClassName (
void
)
00456770 HYTeris!ATL::CWindow::MoveWindow (
int
,
int
,
int
,
int
,
int
)
00442ac0 HYTeris!ATL::CWindow::KillTimer (unsigned
int
)
00455fc0 HYTeris!ATL::CWindow::GetWindowTextW (wchar_t *,
int
)
0040ba20 HYTeris!ATL::CWindow::IsWindow (
void
)
00441db0 HYTeris!ATL::CWindow::GetParent (
void
)
004315b0 HYTeris!ATL::CWindow::SetWindowPos (
struct
HWND__ *,
int
,
int
,
int
,
int
, unsigned
int
)
00456810 HYTeris!ATL::CWindow::GetWindowRect (
struct
tagRECT *)
00431860 HYTeris!ATL::CWindow::GetStyle (
void
)
00455250 HYTeris!ATL::CWindow::Invalidate (
int
)
004318f0 HYTeris!ATL::CWindow::SetCapture (
void
)
00442cf0 HYTeris!ATL::CWindow::SetTimer (unsigned
int
, unsigned
int
, <function> *)
00431980 HYTeris!ATL::CWindow::ModifyStyle (unsigned
long
, unsigned
long
, unsigned
int
)
00443d10 HYTeris!ATL::CWindow::GetDlgItemTextW (
int
, wchar_t *,
int
)
0040b980 HYTeris!ATL::CWindow::SendMessageW (unsigned
int
, unsigned
int
,
long
)
00434be0 HYTeris!ATL::CWindow::ShowWindow (
int
)
004d7a38 HYTeris!ATL::CWindow::`RTTI Base Class Descriptor at (0,-1,0,64)' = <no type information>
004d7a04 HYTeris!ATL::CWindow::`RTTI Base Class Descriptor at (4,-1,0,64)' = <no type information>
004d7a20 HYTeris!ATL::CWindow::`RTTI Class Hierarchy Descriptor' = <no type information>
004d7a30 HYTeris!ATL::CWindow::`RTTI Base Class Array' = <no type information>
我们看到CWindow只有一份 , 并且函数数量相比AtlWin.h减少了很多,因为ATL是以源代码的方式提供的 ,所有没有用到的函数不会被编译到我们最终的可执行文件中 。
通过上面的分析 ,相信我们知道了为什么ATL/WTL大量使用模板,但是生成的exe还是这么小的原因 :
不是模板不会使代码膨胀,而是ATL/WTL在设计时就关注了这个问题 ,它避免了在可能生成很多模板实例的模板类中编写大量代码(有些拗口,不知道你有没有读懂^_^)
总结下 ,如果你想用模板,但是又不想 让自己最终的可执行文件变的很大, 有2种方式:
(1)你的模板类不会生成很多模板实例,这样写成模板类还有意义吗?
(2)你的模板类的代码量或是函数个数很少,你可以仿照ATL的方式把模板无关的东西逐层剥离。