Chris Danford
99 lines
1.9 KiB
C++
99 lines
1.9 KiB
C++
// CrossThreadsMessagingDevice.cpp
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#include "stdafx.h"
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#include "CrossThreadsMessagingDevice.h"
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LPCTSTR CCrossThreadsMessagingDevice::m_lpszClassName = _T("CCrossThreadsMessagingDevice_HiddenWindow");
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int CCrossThreadsMessagingDevice::m_iCount = 0;
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CCrossThreadsMessagingDevice::CCrossThreadsMessagingDevice()
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: m_hWnd(NULL), m_pMonitor(NULL)
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{
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if( m_iCount++ == 0 )
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{
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const WNDCLASS wc =
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{
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0,
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HiddenWindowProc,
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sizeof(DWORD) * 2,
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sizeof(DWORD) * 2,
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GetModuleHandle(NULL),
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(HICON)NULL,
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(HCURSOR)NULL,
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(HBRUSH)(COLOR_WINDOW + 1),
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(LPCTSTR)NULL,
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m_lpszClassName
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};
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if( !RegisterClass(&wc) )
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return;
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}
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m_hWnd = CreateWindow(
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m_lpszClassName,
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_T(""),
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WS_OVERLAPPED,
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0, 0, 0, 0,
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(HWND)NULL,
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(HMENU)NULL,
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GetModuleHandle(NULL),
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this
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);
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}
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CCrossThreadsMessagingDevice::~CCrossThreadsMessagingDevice()
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{
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if( ::IsWindow(m_hWnd) )
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DestroyWindow(m_hWnd);
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if( --m_iCount == 0 )
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{
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UnregisterClass(m_lpszClassName, GetModuleHandle(NULL));
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}
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}
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void CCrossThreadsMessagingDevice::Post(WPARAM wParam, LPARAM lParam)
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{
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ASSERT(::IsWindow(m_hWnd));
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PostMessage(m_hWnd, HWM_DATA, wParam, lParam);
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}
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LRESULT WINAPI CCrossThreadsMessagingDevice::HiddenWindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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LRESULT rc = 0;
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CCrossThreadsMessagingDevice* pThis =
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(CCrossThreadsMessagingDevice*)GetWindowLong(hWnd, GWL_USERDATA);
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switch( uMsg )
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{
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case WM_NCCREATE :
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{
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LPCREATESTRUCT lpcs = (LPCREATESTRUCT)lParam;
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ASSERT(lpcs->lpCreateParams != NULL);
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SetWindowLong(hWnd, GWL_USERDATA, (LONG)lpcs->lpCreateParams);
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rc = TRUE;
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break;
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}
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case HWM_DATA :
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{
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ASSERT(pThis != NULL);
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if( pThis->m_pMonitor )
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pThis->m_pMonitor->OnCrossThreadsMessage(wParam, lParam);
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break;
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}
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default :
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{
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rc = DefWindowProc(hWnd, uMsg, wParam, lParam);
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break;
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}
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}
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return rc;
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}
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