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54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
#include "stdafx.h"
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#include "SingleCtrl.h"
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CSingleCtrl::CSingleCtrl(const char *pExeName)
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{
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TRACE("%s\r\n", pExeName);
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m_sExeName.Format("%s", pExeName);
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}
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BOOL CSingleCtrl::Check()
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{
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CWnd *pPrevWnd = CWnd::GetDesktopWindow()->GetWindow(GW_CHILD);
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::CreateMutex(NULL, TRUE, m_sExeName.GetString());
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if (GetLastError() != ERROR_ALREADY_EXISTS)
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return TRUE;
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while (pPrevWnd)
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{
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if (::GetProp(pPrevWnd->GetSafeHwnd(), m_sExeName.GetString()))
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{
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TRACE("Check: %s found\r\n", m_sExeName.GetString());
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if (pPrevWnd->IsIconic()) {
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TRACE("Check: show it now\r\n");
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pPrevWnd->ShowWindow(SW_RESTORE);
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} else
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pPrevWnd->ShowWindow(SW_NORMAL);
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pPrevWnd->SetForegroundWindow();
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pPrevWnd->GetLastActivePopup()->SetForegroundWindow();
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return FALSE;
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}
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pPrevWnd = pPrevWnd->GetWindow(GW_HWNDNEXT);
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}
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TRACE("Could not find previous instance main window!\r\n");
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return FALSE;
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}
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void CSingleCtrl::Register()
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{
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HWND hWnd = AfxGetApp()->m_pMainWnd->GetSafeHwnd();
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ASSERT(hWnd);
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::SetProp(hWnd, m_sExeName.GetString(), (HANDLE) 1);
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TRACE("Register: %s\r\n", m_sExeName.GetString());
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}
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void CSingleCtrl::Remove()
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{
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HWND hWnd = AfxGetApp()->m_pMainWnd->GetSafeHwnd();
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ASSERT(hWnd);
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::RemoveProp(hWnd, m_sExeName.GetString());
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TRACE("Remove: %s\r\n", m_sExeName.GetString());
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} |