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342 lines
8.2 KiB
342 lines
8.2 KiB
//+----------------------------------------------------------------------------
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//
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// File: rnawnd.cpp
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//
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// Module: CMDIAL32.DLL
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//
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// Synopsis: Win9x Rnaapp.exe workaround code.
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//
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// Copyright (c) 1998-1999 Microsoft Corporation
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//
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// Author: quintinb created Header 08/16/99
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//
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//+----------------------------------------------------------------------------
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#include "cmmaster.h"
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#include <process.h>
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#define MAX_RNA_WND_TITLE_LEN 26 // Max chars for window title compare
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#define MAX_ZAPRNA_PAUSE 50 // milliseconds to pause between window enumerations
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typedef struct tagFRCTParam {
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HANDLE hEvent;
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LPSTR pszDun;
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} ZRCTParam, *PZRCTP;
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typedef struct tagFindParam {
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LPCSTR pszTitle;
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HWND hwndRNA;
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} FINDPARAM, *PFINDPARAM;
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//+---------------------------------------------------------------------------
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//
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// Function: FindRnaWindow
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//
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// Synopsis: Callback for EnumWindows(). It receives the hwnd of all the
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// top-level windows. It's job is to look for the RNA status wnd.
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//
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// Arguments: hwndTop hwnd of the top-level window
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// lParam title of the rna wnd to be found.
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//
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// Returns: NONE
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//
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// History: henryt Created 8/19/97
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//----------------------------------------------------------------------------
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BOOL CALLBACK FindRnaWindow(
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HWND hwndTop,
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LPARAM lParam)
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{
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MYDBGASSERT(lParam);
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PFINDPARAM pFindParam = (PFINDPARAM) lParam;
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CHAR szTitle[MAX_RNA_WND_TITLE_LEN + 1];
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if (NULL == pFindParam)
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{
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return TRUE;
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}
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//
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// We are looking for a top-level window with a title matching lParam
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//
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if (MAKEINTATOM(GetClassLongU(hwndTop, GCW_ATOM)) == WC_DIALOG)
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{
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GetWindowTextA(hwndTop, szTitle, MAX_RNA_WND_TITLE_LEN + 1);
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//
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// truncate the window title as we only check the first few chars
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//
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szTitle[MAX_RNA_WND_TITLE_LEN] = '\0';
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if (lstrcmpA(szTitle, pFindParam->pszTitle) == 0)
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{
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//
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// Its a match, update the hwnd and bail
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//
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pFindParam->hwndRNA = hwndTop;
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return FALSE;
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}
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}
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return TRUE;
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}
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//+----------------------------------------------------------------------------
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//
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// Function: fnZRCT
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//
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// Synopsis: Thread to terminate RNA "Connected To" dlg
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//
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// Arguments: void *pvParam - Thread parameters PZRCTP containing connectoid
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// name is expected
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//
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// Returns: unsigned long - Standard thread return code
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//
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// History: nickball Created 3/5/98
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//
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//+----------------------------------------------------------------------------
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static unsigned long __stdcall fnZRCT(void *pvParam)
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{
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PZRCTP pParam = (PZRCTP) pvParam;
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PFINDPARAM pFindParam = NULL;
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unsigned uRes = 1;
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HMODULE hLibrary = NULL;
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BOOL bRes;
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HLOCAL hRes;
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LPSTR pszFmt = NULL;
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CHAR szTmp[MAX_PATH];
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DWORD dwIdx;
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DWORD dwWait;
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MYDBGASSERT(pParam->hEvent);
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MYDBGASSERT(pParam->pszDun);
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//
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// Load RNAAPP.EXE, so we can access its resources
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//
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hLibrary = LoadLibraryExA("rnaapp.exe", NULL, LOAD_LIBRARY_AS_DATAFILE);
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if (!hLibrary)
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{
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uRes = GetLastError();
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CMTRACE1(TEXT("fnZRCT() LoadLibraryEx() failed, GLE=%u."), GetLastError());
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goto done;
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}
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//
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// Extract string #204 from RNAAPP.EXE, then release.
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//
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if (!LoadStringA(hLibrary, 204, szTmp, sizeof(szTmp)/sizeof(CHAR)-1))
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{
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uRes = GetLastError();
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CMTRACE1(TEXT("fnZRCT() LoadString() failed, GLE=%u."), GetLastError());
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goto done;
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}
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bRes = FreeLibrary(hLibrary);
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hLibrary = NULL;
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#ifdef DEBUG
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if (!bRes)
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{
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CMTRACE1(TEXT("fnZRCT() FreeLibrary() failed, GLE=%u."), GetLastError());
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}
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#endif
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//
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// Format the string with our DUN name
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//
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pszFmt = (LPSTR)CmMalloc((lstrlenA(szTmp)+1)*sizeof(TCHAR));
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if (!pszFmt)
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{
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uRes = GetLastError();
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CMTRACE1(TEXT("fnZRCT() CmMalloc() failed, GLE=%u."), GetLastError());
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goto done;
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}
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lstrcpyA(pszFmt, szTmp);
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wsprintfA(szTmp, pszFmt, pParam->pszDun);
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//
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// to work around a bug where a long connectoid/profile name can prevent
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// us to look for the RNA window(because the window title will be truncated)
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// we only read the first 26 chars.
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//
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szTmp[MAX_RNA_WND_TITLE_LEN] = '\0';
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//
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// Setup param for FindRnaWindow callback used in EnumWindows
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//
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pFindParam = (PFINDPARAM)CmMalloc(sizeof(FINDPARAM));
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if (!pFindParam)
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{
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CMTRACE1(TEXT("ZapRNAConnectedTo() CmMalloc() failed, GLE=%u."), GetLastError());
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goto done;
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}
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pFindParam->pszTitle = szTmp;
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pFindParam->hwndRNA = NULL;
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//
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// Try to find the window every 50 milliseconds up to 200 times
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//
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CMTRACE1(TEXT("fnZRCT() is watching for a window named %s."), szTmp);
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for (dwIdx=0; dwIdx < 200; dwIdx++)
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{
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EnumWindows(FindRnaWindow, (LPARAM) pFindParam);
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//hwndRNA = FindWindow(TEXT("#32770"),szTmp);
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//
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// If hwnd has a value, its the RNA wind, hide it and bail
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//
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if (pFindParam->hwndRNA)
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{
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CMTRACE(TEXT("fnZRCT() is hiding the dialog."));
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ShowWindowAsync(pFindParam->hwndRNA,SW_HIDE);
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uRes = 0;
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break;
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}
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//
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// Wait for MAX_ZAPRNA_PAUSE milliseconds, or until event is signaled
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//
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dwWait = WaitForSingleObject(pParam->hEvent, MAX_ZAPRNA_PAUSE);
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//
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// If not a timeout, we're done
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//
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if (WAIT_TIMEOUT != dwWait)
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{
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//
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// If not an event signal, report
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//
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if (WAIT_OBJECT_0 != dwWait)
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{
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CMTRACE1(TEXT("fnZRCT() WAIT_OBJECT_0 != dwWait, GLE=%u."), GetLastError());
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}
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break;
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}
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}
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done:
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//
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// Cleanup
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//
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#ifdef DEBUG
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if (uRes)
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{
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CMTRACE(TEXT("fnZRCT() has exited without hiding the dialog."));
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}
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#endif
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CmFree(pParam->pszDun);
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CmFree(pParam);
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CmFree(pFindParam);
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CmFree(pszFmt);
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#ifdef DEBUG
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if (uRes)
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{
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CMTRACE(TEXT("fnZRCT() could not free all of its alloc-ed memory"));
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}
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#endif
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if (hLibrary)
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{
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bRes = FreeLibrary(hLibrary);
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}
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CMTRACE1(TEXT("fnZRCT() is exiting with uRes=%u."), uRes);
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return (uRes);
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}
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//+----------------------------------------------------------------------------
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//
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// Function: ZapRNAConnectedTo
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//
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// Synopsis: Fires off thread to hide the RNA "Connected To" dlg
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//
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// Arguments: LPCTSTR pszDUN - The name of the DUN entry that we are connecting
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// HANDLE hEvent - Handle to CM termination event
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//
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// Returns: HANDLE - Handle of created thread or NULL on failure
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//
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// History: nickball Created Header 3/5/98
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//
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//+----------------------------------------------------------------------------
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HANDLE ZapRNAConnectedTo(LPCTSTR pszDUN, HANDLE hEvent)
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{
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MYDBGASSERT(pszDUN);
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MYDBGASSERT(hEvent);
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PZRCTP pParam;
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unsigned long tidThread;
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HANDLE hThread = NULL;
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if (NULL == pszDUN || NULL == *pszDUN || NULL == hEvent)
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{
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return hThread;
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}
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pParam = (PZRCTP) CmMalloc(sizeof(ZRCTParam));
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if (!pParam)
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{
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CMTRACE1(TEXT("ZapRNAConnectedTo() CmMalloc() failed, GLE=%u."), GetLastError());
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return hThread;
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}
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pParam->pszDun = WzToSzWithAlloc(pszDUN);
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if (!pParam->pszDun)
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{
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CMTRACE1(TEXT("ZapRNAConnectedTo() CmMalloc() failed, GLE=%u."), GetLastError());
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return hThread;
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}
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//
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// Setup params to be passed to thread
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//
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pParam->hEvent = hEvent;
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//
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// Create the Zap thread
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//
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hThread = (HANDLE) CreateThread(NULL, 0, fnZRCT, pParam, 0, &tidThread);
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if (!hThread)
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{
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//
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// Couldn't create thread, free params
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//
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CMTRACE1(TEXT("ZapRNAConnectedTo() CreateThread() failed, GLE=%u."), GetLastError());
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CmFree(pParam);
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}
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//
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// Note: pParam is release inside thread
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//
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CMTRACE1(TEXT("fnZRCT() is exiting with hThread=%u."), hThread);
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return hThread;
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}
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