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LRESULT CWnd::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
// OnWndMsg does most of the work, except for DefWindowProc call
LRESULT lResult = 0;
if (!OnWndMsg(message, wParam, lParam, &lResult))
lResult = DefWindowProc(message, wParam, lParam);
return lResult;
}
BOOL CWnd::OnWndMsg(UINT message, WPARAM wParam, LPARAM lParam, LRESULT* pResult)
{
LRESULT lResult = 0;
// special case for commands
if (message == WM_COMMAND)
{
if (OnCommand(wParam, lParam))
{
lResult = 1;
goto LReturnTrue;
}
return FALSE;
}
LReturnTrue:
if (pResult != NULL)
*pResult = lResult;
return TRUE;
}
AFX_STATIC BOOL AFXAPI _AfxDispatchCmdMsg(CCmdTarget* pTarget, UINT nID, int nCode,
AFX_PMSG pfn, void* pExtra, UINT nSig, AFX_CMDHANDLERINFO* pHandlerInfo)
// return TRUE to stop routing
{
ASSERT_VALID(pTarget);
UNUSED(nCode); // unused in release builds
union MessageMapFunctions mmf;
mmf.pfn = pfn;
BOOL bResult = TRUE; // default is ok
if (pHandlerInfo != NULL)
{
// just fill in the information, don't do it
pHandlerInfo->pTarget = pTarget;
pHandlerInfo->pmf = mmf.pfn;
return TRUE;
}
switch (nSig)
{
case AfxSig_vv:
// normal command or control notification
ASSERT(CN_COMMAND == 0); // CN_COMMAND same as BN_CLICKED
ASSERT(pExtra == NULL);
(pTarget->*mmf.pfn_COMMAND)(); // 比如处理BN_CLICKED点击事件
break;
case AfxSig_bv:
// normal command or control notification
ASSERT(CN_COMMAND == 0); // CN_COMMAND same as BN_CLICKED
ASSERT(pExtra == NULL);
bResult = (pTarget->*mmf.pfn_bCOMMAND)();
break;
case AfxSig_vw:
// normal command or control notification in a range
ASSERT(CN_COMMAND == 0); // CN_COMMAND same as BN_CLICKED
ASSERT(pExtra == NULL);
(pTarget->*mmf.pfn_COMMAND_RANGE)(nID);
break;
case AfxSig_bw:
// extended command (passed ID, returns bContinue)
ASSERT(pExtra == NULL);
bResult = (pTarget->*mmf.pfn_COMMAND_EX)(nID);
break;
case AfxSig_vNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
(pTarget->*mmf.pfn_NOTIFY)(pNotify->pNMHDR, pNotify->pResult);
}
break;
case AfxSig_bNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
bResult = (pTarget->*mmf.pfn_bNOTIFY)(pNotify->pNMHDR, pNotify->pResult);
}
break;
case AfxSig_vwNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
(pTarget->*mmf.pfn_NOTIFY_RANGE)(nID, pNotify->pNMHDR,
pNotify->pResult);
}
break;
case AfxSig_bwNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
bResult = (pTarget->*mmf.pfn_NOTIFY_EX)(nID, pNotify->pNMHDR,
pNotify->pResult);
}
break;
case AfxSig_cmdui:
{
// ON_UPDATE_COMMAND_UI or ON_UPDATE_COMMAND_UI_REFLECT case
ASSERT(CN_UPDATE_COMMAND_UI == (UINT)-1);
ASSERT(nCode == CN_UPDATE_COMMAND_UI || nCode == 0xFFFF);
ASSERT(pExtra != NULL);
CCmdUI* pCmdUI = (CCmdUI*)pExtra;
ASSERT(!pCmdUI->m_bContinueRouting); // idle - not set
(pTarget->*mmf.pfn_UPDATE_COMMAND_UI)(pCmdUI);
bResult = !pCmdUI->m_bContinueRouting;
pCmdUI->m_bContinueRouting = FALSE; // go back to idle
}
break;
case AfxSig_cmduiw:
{
// ON_UPDATE_COMMAND_UI case
ASSERT(nCode == CN_UPDATE_COMMAND_UI);
ASSERT(pExtra != NULL);
CCmdUI* pCmdUI = (CCmdUI*)pExtra;
ASSERT(pCmdUI->m_nID == nID); // sanity assert
ASSERT(!pCmdUI->m_bContinueRouting); // idle - not set
(pTarget->*mmf.pfn_UPDATE_COMMAND_UI_RANGE)(pCmdUI, nID);
bResult = !pCmdUI->m_bContinueRouting;
pCmdUI->m_bContinueRouting = FALSE; // go back to idle
}
break;
// general extensibility hooks
case AfxSig_vpv:
(pTarget->*mmf.pfn_OTHER)(pExtra);
break;
case AfxSig_bpv:
bResult = (pTarget->*mmf.pfn_OTHER_EX)(pExtra);
break;
default: // illegal
ASSERT(FALSE);
return 0;
}
return bResult;
}
AFX_STATIC BOOL AFXAPI _AfxDispatchCmdMsg(CCmdTarget* pTarget, UINT nID, int nCode,
AFX_PMSG pfn, void* pExtra, UINT nSig, AFX_CMDHANDLERINFO* pHandlerInfo)
// return TRUE to stop routing
{
ASSERT_VALID(pTarget);
UNUSED(nCode); // unused in release builds
union MessageMapFunctions mmf;
mmf.pfn = pfn;
BOOL bResult = TRUE; // default is ok
if (pHandlerInfo != NULL)
{
// just fill in the information, don't do it
pHandlerInfo->pTarget = pTarget;
pHandlerInfo->pmf = mmf.pfn;
return TRUE;
}
switch (nSig)
{
case AfxSig_vv:
// normal command or control notification
ASSERT(CN_COMMAND == 0); // CN_COMMAND same as BN_CLICKED
ASSERT(pExtra == NULL);
(pTarget->*mmf.pfn_COMMAND)(); // 这里BN_CLICKED消息响应
break;
case AfxSig_bv:
// normal command or control notification
ASSERT(CN_COMMAND == 0); // CN_COMMAND same as BN_CLICKED
ASSERT(pExtra == NULL);
bResult = (pTarget->*mmf.pfn_bCOMMAND)();
break;
case AfxSig_vw:
// normal command or control notification in a range
ASSERT(CN_COMMAND == 0); // CN_COMMAND same as BN_CLICKED
ASSERT(pExtra == NULL);
(pTarget->*mmf.pfn_COMMAND_RANGE)(nID);
break;
case AfxSig_bw:
// extended command (passed ID, returns bContinue)
ASSERT(pExtra == NULL);
bResult = (pTarget->*mmf.pfn_COMMAND_EX)(nID);
break;
case AfxSig_vNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
(pTarget->*mmf.pfn_NOTIFY)(pNotify->pNMHDR, pNotify->pResult);
}
break;
case AfxSig_bNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
bResult = (pTarget->*mmf.pfn_bNOTIFY)(pNotify->pNMHDR, pNotify->pResult);
}
break;
case AfxSig_vwNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
(pTarget->*mmf.pfn_NOTIFY_RANGE)(nID, pNotify->pNMHDR,
pNotify->pResult);
}
break;
case AfxSig_bwNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
bResult = (pTarget->*mmf.pfn_NOTIFY_EX)(nID, pNotify->pNMHDR,
pNotify->pResult);
}
break;
case AfxSig_cmdui:
{
// ON_UPDATE_COMMAND_UI or ON_UPDATE_COMMAND_UI_REFLECT case
ASSERT(CN_UPDATE_COMMAND_UI == (UINT)-1);
ASSERT(nCode == CN_UPDATE_COMMAND_UI || nCode == 0xFFFF);
ASSERT(pExtra != NULL);
CCmdUI* pCmdUI = (CCmdUI*)pExtra;
ASSERT(!pCmdUI->m_bContinueRouting); // idle - not set
(pTarget->*mmf.pfn_UPDATE_COMMAND_UI)(pCmdUI);
bResult = !pCmdUI->m_bContinueRouting;
pCmdUI->m_bContinueRouting = FALSE; // go back to idle
}
break;
case AfxSig_cmduiw:
{
// ON_UPDATE_COMMAND_UI case
ASSERT(nCode == CN_UPDATE_COMMAND_UI);
ASSERT(pExtra != NULL);
CCmdUI* pCmdUI = (CCmdUI*)pExtra;
ASSERT(pCmdUI->m_nID == nID); // sanity assert
ASSERT(!pCmdUI->m_bContinueRouting); // idle - not set
(pTarget->*mmf.pfn_UPDATE_COMMAND_UI_RANGE)(pCmdUI, nID);
bResult = !pCmdUI->m_bContinueRouting;
pCmdUI->m_bContinueRouting = FALSE; // go back to idle
}
break;
// general extensibility hooks
case AfxSig_vpv:
(pTarget->*mmf.pfn_OTHER)(pExtra);
break;
case AfxSig_bpv:
bResult = (pTarget->*mmf.pfn_OTHER_EX)(pExtra);
break;
default: // illegal
ASSERT(FALSE);
return 0;
}
return bResult;
}
AFX_STATIC BOOL AFXAPI _AfxDispatchCmdMsg(CCmdTarget* pTarget, UINT nID, int nCode,
AFX_PMSG pfn, void* pExtra, UINT nSig, AFX_CMDHANDLERINFO* pHandlerInfo)
// return TRUE to stop routing
{
ASSERT_VALID(pTarget);
UNUSED(nCode); // unused in release builds
union MessageMapFunctions mmf;
mmf.pfn = pfn;
BOOL bResult = TRUE; // default is ok
if (pHandlerInfo != NULL)
{
// just fill in the information, don't do it
pHandlerInfo->pTarget = pTarget;
pHandlerInfo->pmf = mmf.pfn;
return TRUE;
}
switch (nSig)
{
case AfxSig_vv:
// normal command or control notification
ASSERT(CN_COMMAND == 0); // CN_COMMAND same as BN_CLICKED
ASSERT(pExtra == NULL);
(pTarget->*mmf.pfn_COMMAND)(); // 这里BN_CLICKED消息响应
break;
case AfxSig_bv:
// normal command or control notification
ASSERT(CN_COMMAND == 0); // CN_COMMAND same as BN_CLICKED
ASSERT(pExtra == NULL);
bResult = (pTarget->*mmf.pfn_bCOMMAND)();
break;
case AfxSig_vw:
// normal command or control notification in a range
ASSERT(CN_COMMAND == 0); // CN_COMMAND same as BN_CLICKED
ASSERT(pExtra == NULL);
(pTarget->*mmf.pfn_COMMAND_RANGE)(nID);
break;
case AfxSig_bw:
// extended command (passed ID, returns bContinue)
ASSERT(pExtra == NULL);
bResult = (pTarget->*mmf.pfn_COMMAND_EX)(nID);
break;
case AfxSig_vNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
(pTarget->*mmf.pfn_NOTIFY)(pNotify->pNMHDR, pNotify->pResult);
}
break;
case AfxSig_bNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
bResult = (pTarget->*mmf.pfn_bNOTIFY)(pNotify->pNMHDR, pNotify->pResult);
}
break;
case AfxSig_vwNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
(pTarget->*mmf.pfn_NOTIFY_RANGE)(nID, pNotify->pNMHDR,
pNotify->pResult);
}
break;
case AfxSig_bwNMHDRpl:
{
AFX_NOTIFY* pNotify = (AFX_NOTIFY*)pExtra;
ASSERT(pNotify != NULL);
ASSERT(pNotify->pResult != NULL);
ASSERT(pNotify->pNMHDR != NULL);
bResult = (pTarget->*mmf.pfn_NOTIFY_EX)(nID, pNotify->pNMHDR,
pNotify->pResult);
}
break;
case AfxSig_cmdui:
{
// ON_UPDATE_COMMAND_UI or ON_UPDATE_COMMAND_UI_REFLECT case
ASSERT(CN_UPDATE_COMMAND_UI == (UINT)-1);
ASSERT(nCode == CN_UPDATE_COMMAND_UI || nCode == 0xFFFF);
ASSERT(pExtra != NULL);
CCmdUI* pCmdUI = (CCmdUI*)pExtra;
ASSERT(!pCmdUI->m_bContinueRouting); // idle - not set
(pTarget->*mmf.pfn_UPDATE_COMMAND_UI)(pCmdUI);
bResult = !pCmdUI->m_bContinueRouting;
pCmdUI->m_bContinueRouting = FALSE; // go back to idle
}
break;
case AfxSig_cmduiw:
{
// ON_UPDATE_COMMAND_UI case
ASSERT(nCode == CN_UPDATE_COMMAND_UI);
ASSERT(pExtra != NULL);
CCmdUI* pCmdUI = (CCmdUI*)pExtra;
ASSERT(pCmdUI->m_nID == nID); // sanity assert
ASSERT(!pCmdUI->m_bContinueRouting); // idle - not set
(pTarget->*mmf.pfn_UPDATE_COMMAND_UI_RANGE)(pCmdUI, nID);
bResult = !pCmdUI->m_bContinueRouting;
pCmdUI->m_bContinueRouting = FALSE; // go back to idle
}
break;
// general extensibility hooks
case AfxSig_vpv:
(pTarget->*mmf.pfn_OTHER)(pExtra);
break;
case AfxSig_bpv:
bResult = (pTarget->*mmf.pfn_OTHER_EX)(pExtra);
break;
default: // illegal
ASSERT(FALSE);
return 0;
}
return bResult;
}