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/*
* AUTHOR
* N. Nielsen
*
* VERSION
* 2.2.0b
*
* LICENSE
* This software is in the public domain.
*
* The software is provided "as is", without warranty of any kind,
* express or implied, including but not limited to the warranties
* of merchantability, fitness for a particular purpose, and
* noninfringement. In no event shall the author(s) be liable for any
* claim, damages, or other liability, whether in an action of
* contract, tort, or otherwise, arising from, out of, or in connection
* with the software or the use or other dealings in the software.
*
* SUPPORT
* Send bug reports to: <nielsen@memberwebs.com>
*/
#ifndef __ATLWINHK_H__
#define __ATLWINHK_H__
/////////////////////////////////////////////////////////////////////////
// Hooks an CWindowImpl to windows that the API or other code creates
// By Stef: 06/10/99
// Use this macro in the class definition and pass class name
// as first param
#define DECLARE_HOOK_AND_SUBCLASS(Class) \
HHOOK m_hHookCur; \
static LRESULT CALLBACK HookCreateProc(int nCode, \
WPARAM wParam, \
LPARAM lParam) \
{ \
Class* pThis = (Class*) _Module.ExtractCreateWndData(); \
\
if (nCode != HCBT_CREATEWND) \
{ \
/*Add it back again*/ \
_Module.AddCreateWndData(&(pThis->m_thunk.cd), pThis); \
/*wait for HCBT_CREATEWND just pass others on...*/ \
return CallNextHookEx(pThis->m_hHookCur, nCode, wParam, lParam); \
} \
\
pThis->SubclassWindow((HWND)wParam); \
\
UnhookWindowsHookEx(pThis->m_hHookCur); \
HHOOK hHookCur = pThis->m_hHookCur; \
pThis->m_hHookCur = NULL; \
\
return CallNextHookEx(hHookCur, nCode, wParam, lParam); \
}
// Use this *immediately* before the code that creates the window
// It will subclass the first window that's created by that thread
// so add immediately before.
#define HOOK_AND_SUBCLASS_NEXT() \
((m_hHookCur = SetWindowsHookEx(WH_CBT, HookCreateProc, NULL, ::GetCurrentThreadId())) == NULL)
const LPCTSTR kDialogClass = (LPCTSTR)0x00008002;
template<class _Class>
class CHookWindow
{
public:
CHookWindow()
{
m_hHookCur = NULL;
m_szHookClass = NULL;
m_szHookName = NULL;
}
bool SubclassNext(LPCTSTR szClass = NULL, LPCTSTR szName = NULL)
{
_Class* pThis = (_Class*)this;
_Module.AddCreateWndData(&(pThis->m_thunk.cd), pThis);
m_hHookCur = SetWindowsHookEx(WH_CBT, HookCreateProc, NULL, ::GetCurrentThreadId());
if(m_hHookCur)
{
m_szHookClass = szClass;
m_szHookName = szName;
}
return m_hHookCur == NULL;
}
static LRESULT CALLBACK HookCreateProc(int nCode, WPARAM wParam, LPARAM lParam)
{
_Class* pThis = (_Class*) _Module.ExtractCreateWndData();
HHOOK hHookCur = pThis->m_hHookCur;
bool bSkip = false;
if(nCode != HCBT_CREATEWND)
{
bSkip = true;
}
else
{
CBT_CREATEWND* pCreate = (CBT_CREATEWND*)lParam;
if(pThis->m_szHookClass)
{
// If it's not a pointer (for at least two bytes)
if(IsBadReadPtr(pCreate->lpcs->lpszClass, 2) || IsBadReadPtr(pThis->m_szHookClass, 2))
// Then just compare values
bSkip = pCreate->lpcs->lpszClass != pThis->m_szHookClass;
else
// Otherwise compare strings
bSkip = _tcsicmp(pCreate->lpcs->lpszClass, pThis->m_szHookClass) != 0;
}
if(pThis->m_szHookName)
{
if(IsBadReadPtr(pCreate->lpcs->lpszName, _tcslen(pThis->m_szHookName)) ||
_tcsicmp(pCreate->lpcs->lpszName, pThis->m_szHookName))
bSkip = true;
}
}
if(bSkip)
{
/*Add it back again*/
_Module.AddCreateWndData(&(pThis->m_thunk.cd), pThis);
}
else
{
pThis->SubclassWindow((HWND)wParam);
UnhookWindowsHookEx(pThis->m_hHookCur);
pThis->m_hHookCur = NULL;
}
return CallNextHookEx(hHookCur, nCode, wParam, lParam);
}
protected:
HHOOK m_hHookCur;
LPCTSTR m_szHookName;
LPCTSTR m_szHookClass;
};
#endif //__ATLWINHK_H__
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