123 lines
4.1 KiB
C++
123 lines
4.1 KiB
C++
//*********************************************************************
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//* Microsoft Windows **
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//* Copyright(c) Microsoft Corp., 1994 **
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//*********************************************************************
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//
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// UNINSTAL.C - code to uninstall MSN
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//
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// HISTORY:
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//
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// 6/22/95 jeremys Created.
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//
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#include "wizard.h"
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extern DOGENINSTALL lpDoGenInstall;
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/*******************************************************************
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NAME: DoUninstall
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SYNOPSIS: Uninstalls MSN1.05 if we installed it in the past,
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and it's still installed
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********************************************************************/
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BOOL DoUninstall(VOID)
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{
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BOOL fRet = TRUE;
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BOOL fNeedToRemoveMSN105 = FALSE;
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// check registry entry to see if we installed MSN1.05
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RegEntry re(szRegPathInternetSettings,HKEY_LOCAL_MACHINE);
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ASSERT(re.GetError() == ERROR_SUCCESS);
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if (re.GetError() == ERROR_SUCCESS) {
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if (re.GetNumber(szRegValInstalledMSN105,0) > 0) {
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// yes, we installed MSN1.05. now see if it's still installed.
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RegEntry reSetup(szRegPathOptComponents,HKEY_LOCAL_MACHINE);
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ASSERT(reSetup.GetError() == ERROR_SUCCESS);
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reSetup.MoveToSubKey(szRegPathMSNetwork105);
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ASSERT(reSetup.GetError() == ERROR_SUCCESS);
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if (reSetup.GetError() == ERROR_SUCCESS) {
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TCHAR szInstalledVal[10]; // big enough for "1"
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if (reSetup.GetString(szRegValInstalled,szInstalledVal,
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sizeof(szInstalledVal))
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&& !lstrcmpi(szInstalledVal,sz1)) {
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// yes, MSN1.05 is still installed. we need to remove it.
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fNeedToRemoveMSN105 = TRUE;
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}
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}
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}
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}
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if (fNeedToRemoveMSN105) {
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// warn user that this will remove MSN!
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int iRet=MsgBox(NULL,IDS_WARNWillRemoveMSN,MB_ICONEXCLAMATION,MB_OKCANCEL);
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if (iRet == IDOK) {
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TCHAR szInfFilename[SMALL_BUF_LEN+1];
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TCHAR szInfSectionName[SMALL_BUF_LEN+1];
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DEBUGMSG("Uninstalling MSN 1.05");
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// load file name and section name out of resources
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LoadSz(IDS_MSN105_INF_FILE,szInfFilename,ARRAYSIZE(szInfFilename));
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LoadSz(IDS_MSN105_UNINSTALL_SECT,szInfSectionName,
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ARRAYSIZE(szInfSectionName));
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// call GenInstall to remove files, do registry edits, etc.
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RETERR err = lpDoGenInstall(NULL,szInfFilename,szInfSectionName);
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if (err == OK) {
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DEBUGMSG("Uninstalling MSN 1.0");
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// load file name and section name out of resources
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LoadSz(IDS_MSN100_INF_FILE,szInfFilename,ARRAYSIZE(szInfFilename));
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LoadSz(IDS_MSN100_UNINSTALL_SECT,szInfSectionName,
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ARRAYSIZE(szInfSectionName));
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// call GenInstall to remove files, do registry edits, etc.
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RETERR err = lpDoGenInstall(NULL,szInfFilename,szInfSectionName);
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}
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if (err != OK) {
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DisplayErrorMessage(NULL,IDS_ERRUninstallMSN,err,ERRCLS_SETUPX,
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MB_ICONEXCLAMATION);
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fRet = FALSE;
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} else {
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// remove our registry marker that we installed MSN 1.05
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re.DeleteValue(szRegValInstalledMSN105);
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}
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}
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}
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// remove the Internet icon from the desktop. To do this, we have to
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// delete a registry key (not a value!). Plus! setup won't
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// do this from their .inf file, they can only delete values. So we
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// have to write some actual code here to remove the key.
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// open the name space key. The key we want to remove is a subkey
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// of this key.
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// //10/24/96 jmazner Normandy 6968
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// //No longer neccessary thanks to Valdon's hooks for invoking ICW.
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// 11/21/96 jmazner Normandy 11812
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// oops, it _is_ neccessary, since if user downgrades from IE 4 to IE 3,
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// ICW 1.1 needs to morph the IE 3 icon.
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RegEntry reNameSpace(szRegPathNameSpace,HKEY_LOCAL_MACHINE);
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ASSERT(reNameSpace.GetError() == ERROR_SUCCESS);
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if (reNameSpace.GetError() == ERROR_SUCCESS) {
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// delete the subkey that causes the internet icon to appear
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RegDeleteKey(reNameSpace.GetKey(),szRegKeyInternetIcon);
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}
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return fRet;
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}
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