54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
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/////////////////////////////////////////////////////////////////////////////
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// TopWin.h : Declaration of CTopWin, hidden top level window for handling system broadcast messages
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// Copyright (c) Microsoft Corporation 1999-2000.
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#pragma once
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#ifndef __TopWin_H_
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#define __TopWin_H_
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typedef CWinTraits<WS_OVERLAPPEDWINDOW, WS_EX_NOACTIVATE> HiddenTopTraits;
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class CVidCtl;
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/////////////////////////////////////////////////////////////////////////////
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// CTopWin
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class CTopWin : public CWindowImpl<CTopWin, CWindow, HiddenTopTraits> {
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public:
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enum {
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WMUSER_INPLACE_ACTIVATE,
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WMUSER_SITE_RECT_WRONG
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};
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CTopWin(CVidCtl *pVidCtli) : m_pVidCtl(pVidCtli) {}
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void Init() {
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ASSERT(m_pVidCtl); // its pointless to create one of these without associating with a main control
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Create(NULL, CRect(), _T("MSVidCtl System Broadcast Message Receiver"));
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}
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virtual ~CTopWin() {
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m_pVidCtl = NULL;
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}
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// NOTE: since this window is created by the main vidctl its message queue is associated with the appropriate
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// apartment thread for the main vidctl. thus whoever pumps the main apartment thread will pump this window too.
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// and, thus we're automatically synchronzied with the main vidctl and can simply reflect the significant
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// messages over to the vidctl itself and be guaranteed that we're getting the same
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// behavior for windowless and windowed since its the same code for both cases.
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virtual BOOL ProcessWindowMessage(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT& lResult, DWORD dwMsgMapID = 0);
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void PostInPlaceActivate() {
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PostMessage(WM_USER + WMUSER_INPLACE_ACTIVATE, 0, 0);
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}
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private:
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CVidCtl *m_pVidCtl;
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};
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#endif //__TopWin_H_
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