RetroZilla/toolkit/mozapps/installer/windows/wizard/uninstall/dialogs.c

/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Communicator client code, released
 * March 31, 1998.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Sean Su <ssu@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "extern.h"
#include "extra.h"
#include "dialogs.h"
#include "ifuncns.h"
#include "parser.h"
#include "rdi.h"
#include "shlobj.h"

#define MOZ_HWND_BROADCAST_MSG_TIMEOUT 5000
#define MOZ_CLIENT_BROWSER_KEY         "Software\\Clients\\StartMenuInternet"
#define MOZ_CLIENT_MAIL_KEY            "Software\\Clients\\Mail"

void SetDefault()
{
  char szBuf[MAX_BUF];
  char szRegKey[MAX_BUF];

  GetPrivateProfileString(ugUninstall.szDefaultComponent, "ClientTypeName", "", szBuf, MAX_BUF, szFileIniDefaultsInfo);
  wsprintf(szRegKey, "SOFTWARE\\Clients\\%s", szBuf);
  GetPrivateProfileString(ugUninstall.szDefaultComponent, "ClientProductKey", "", szBuf, MAX_BUF, szFileIniDefaultsInfo);

  SetWinReg(HKEY_LOCAL_MACHINE, szRegKey, "", REG_SZ, szBuf, lstrlen(szBuf));
}

void ParseDefaultsInfo()
{
  char szBuf[MAX_BUF];
  char szIniKey[MAX_BUF];
  char szStorageDir[MAX_BUF];
  char szShortcutPath[MAX_BUF];
  char szStoredShortcutPath[MAX_BUF];
  char szRegKey[MAX_BUF];
  char szClientTypeName[MAX_BUF];
  char szClientProductKey[MAX_BUF];
  int  iIndex;
  DWORD dwIconsVisible;

  // If szAppPath is a null string, i.e. we cannot find where the app has been installed:
  //   - HIDEICONS will still remove the shortcuts but
  //   - SHOWICONS will do nothing because we won't be able to find the shortcuts to display.
  ParsePath(ugUninstall.szAppPath, szStorageDir, MAX_BUF, PP_PATH_ONLY);
  lstrcat(szStorageDir, "defaults\\shortcuts\\");

  // CLEANUP ISSUE:  For all of the SHOWICON and HIDEICONS blocks below, there is a lot of
  //   redundancy:
  //   - Right now I'm just trying to create icons and, if I can't, trying under the PERSONAL
  //     key instead.  I would be cleaner to check for restricted access once, and then just
  //     create the appropriate key each time.
  //   - Creating a ShowIcon() and a HideIcon() function would rid us much of the redundency.


  // Deal with Desktop Icons
  iIndex = 0;
  wsprintf(szIniKey, "DesktopShortcut%d", iIndex);
  GetPrivateProfileString(ugUninstall.szDefaultComponent, szIniKey, "", szBuf, MAX_BUF, szFileIniDefaultsInfo);
  while(szBuf[0] != '\0')
  {
    strcpy(szShortcutPath, "COMMON_DESKTOP");
    DecryptVariable(szShortcutPath, MAX_BUF);

    if((ugUninstall.mode == SHOWICONS) && (szStorageDir[0] != '\0'))
    {
      wsprintf(szStoredShortcutPath, "%s%s", szStorageDir, szBuf);
      FileCopy(szStoredShortcutPath, szShortcutPath, 0);
      if( (!FileExists(szShortcutPath)) && (!(ulOSType & OS_WIN9x)) )
      {
        strcpy(szShortcutPath, "PERSONAL_DESKTOP");
        DecryptVariable(szShortcutPath, MAX_BUF);
        FileCopy(szStoredShortcutPath, szShortcutPath, 0);
      }
    }

    if (ugUninstall.mode == HIDEICONS)
    {
      AppendBackSlash(szShortcutPath, MAX_BUF);
      lstrcat(szShortcutPath, szBuf);
      if( (!FileExists(szShortcutPath)) && (!(ulOSType & OS_WIN9x)) )
      {
        strcpy(szShortcutPath, "PERSONAL_DESKTOP");
        DecryptVariable(szShortcutPath, MAX_BUF);
        AppendBackSlash(szShortcutPath, MAX_BUF);
        lstrcat(szShortcutPath, szBuf);
      }

      FileDelete(szShortcutPath);
    }

    iIndex++;
    wsprintf(szIniKey, "DesktopShortcut%d", iIndex);
    GetPrivateProfileString(ugUninstall.szDefaultComponent, szIniKey, "", szBuf, MAX_BUF, szFileIniDefaultsInfo);
  }

  // Deal with StartMenu Icons
  iIndex = 0;
  wsprintf(szIniKey, "StartMenuShortcut%d", iIndex);
  GetPrivateProfileString(ugUninstall.szDefaultComponent, szIniKey, "", szBuf, MAX_BUF, szFileIniDefaultsInfo);
  while(szBuf[0] != '\0')
  {
    strcpy(szShortcutPath, "COMMON_STARTMENU");
    DecryptVariable(szShortcutPath, MAX_BUF);

    if((ugUninstall.mode == SHOWICONS) && (szStorageDir[0] != '\0'))
    {
      lstrcpy(szStoredShortcutPath, szStorageDir);
      lstrcat(szStoredShortcutPath, szBuf);
      FileCopy(szStoredShortcutPath, szShortcutPath, 0);
      if( (!FileExists(szShortcutPath)) && (!(ulOSType & OS_WIN9x)) )
      {
        strcpy(szShortcutPath, "PERSONAL_STARTMENU");
        DecryptVariable(szShortcutPath, MAX_BUF);
        FileCopy(szStoredShortcutPath, szShortcutPath, 0);
      }
    }

    if (ugUninstall.mode == HIDEICONS)
    {
      AppendBackSlash(szShortcutPath, MAX_BUF);
      lstrcat(szShortcutPath, szBuf);
      if( (!FileExists(szShortcutPath)) && (!(ulOSType & OS_WIN9x)) )
      {
        strcpy(szShortcutPath, "PERSONAL_STARTMENU");
        DecryptVariable(szShortcutPath, MAX_BUF);
        AppendBackSlash(szShortcutPath, MAX_BUF);
        lstrcat(szShortcutPath, szBuf);
      }

      FileDelete(szShortcutPath);
    }

    iIndex++;
    wsprintf(szIniKey, "StartMenuShortcut%d", iIndex);
    GetPrivateProfileString(ugUninstall.szDefaultComponent, szIniKey, "", szBuf, MAX_BUF, szFileIniDefaultsInfo);
  }

  // Deal with QuickLaunch Bar Icons
  iIndex = 0;
  wsprintf(szIniKey, "QuickLaunchBarShortcut%d", iIndex);
  GetPrivateProfileString(ugUninstall.szDefaultComponent, szIniKey, "", szBuf, MAX_BUF, szFileIniDefaultsInfo);
  while(szBuf[0] != '\0')
  {
    GetWinReg(HKEY_CURRENT_USER, "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders", "AppData", szShortcutPath, MAX_BUF);
    lstrcat(szShortcutPath, "\\Microsoft\\Internet Explorer\\Quick Launch");

    if((ugUninstall.mode == SHOWICONS) && (szStorageDir[0] != '\0'))
    {
      wsprintf(szStoredShortcutPath, "%s%s", szStorageDir, szBuf);
      FileCopy(szStoredShortcutPath, szShortcutPath, 0);
      if( (!FileExists(szShortcutPath)) && (!(ulOSType & OS_WIN9x)) )
      {
        GetWinReg(HKEY_CURRENT_USER, "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\GrpConv\\MapGroups", "Quick Launch", szShortcutPath, MAX_BUF);
        FileCopy(szStoredShortcutPath, szShortcutPath, 0);
      }
    }

    if (ugUninstall.mode == HIDEICONS)
    {
      AppendBackSlash(szShortcutPath, MAX_BUF);
      lstrcat(szShortcutPath, szBuf);
      if( (!FileExists(szShortcutPath)) && (!(ulOSType & OS_WIN9x)) )
      {
        GetWinReg(HKEY_CURRENT_USER, "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\GrpConv\\MapGroups", "Quick Launch", szShortcutPath, MAX_BUF);
        AppendBackSlash(szShortcutPath, MAX_BUF);
        lstrcat(szShortcutPath, szBuf);
      }

      FileDelete(szShortcutPath);
    }

    ++iIndex;
    wsprintf(szIniKey, "QuickLaunchBarShortcut%d", iIndex);
    GetPrivateProfileString(ugUninstall.szDefaultComponent, szIniKey, "", szBuf, MAX_BUF, szFileIniDefaultsInfo);
  }

  GetPrivateProfileString(ugUninstall.szDefaultComponent, "ClientTypeName", "", szClientTypeName, MAX_BUF, szFileIniDefaultsInfo);
  GetPrivateProfileString(ugUninstall.szDefaultComponent, "ClientProductKey", "", szClientProductKey, MAX_BUF, szFileIniDefaultsInfo);
  wsprintf(szRegKey, "SOFTWARE\\Clients\\%s\\%s\\InstallInfo", szClientTypeName, szClientProductKey);

  if (ugUninstall.mode == SHOWICONS)
    dwIconsVisible = 1;
  else
    dwIconsVisible = 0;

  SetWinRegNumValue(HKEY_LOCAL_MACHINE, szRegKey, "IconsVisible", dwIconsVisible);
}

void ParseAllUninstallLogs()
{
  char  szFileInstallLog[MAX_BUF];
  char  szKey[MAX_BUF];
  sil   *silFile;
  DWORD dwFileFound;
  DWORD dwRv = 0;

  UndoDesktopIntegration();
  CleanupMailIntegration();
  dwFileFound = GetLogFile(ugUninstall.szLogPath, ugUninstall.szLogFilename, szFileInstallLog, sizeof(szFileInstallLog));
  while(dwFileFound)
  {
    if((silFile = InitSilNodes(szFileInstallLog)) != NULL)
    {
      FileDelete(szFileInstallLog);
      dwRv = Uninstall(silFile);
      DeInitSilNodes(&silFile);
      if(dwRv == WTD_CANCEL)
        break;
    }

    dwFileFound = GetLogFile(ugUninstall.szLogPath, ugUninstall.szLogFilename, szFileInstallLog, sizeof(szFileInstallLog));
  }

  if(dwRv != WTD_CANCEL)
  {
    lstrcpy(szFileInstallLog, ugUninstall.szLogPath);
    AppendBackSlash(szFileInstallLog, MAX_BUF);
    lstrcat(szFileInstallLog, ugUninstall.szLogFilename);
    if(FileExists(szFileInstallLog))
    {
      if((silFile = InitSilNodes(szFileInstallLog)) != NULL)
      {
        FileDelete(szFileInstallLog);
        Uninstall(silFile);
        DeInitSilNodes(&silFile);
      }
    }

    /* clean up the uninstall windows registry key */
    lstrcpy(szKey, "Software\\Microsoft\\Windows\\CurrentVersion\\uninstall\\");
    lstrcat(szKey, ugUninstall.szUninstallKeyDescription);
    RegDeleteKey(HKEY_LOCAL_MACHINE, szKey);

    // Calling SHChangeNotify() will update the file association icons
    // in case they had been reset.
    SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);

    // Note completion of the uninstall process.
    gbUninstallCompleted = TRUE;
  }

  /* Broadcast message only if the windows registry keys exist
   * in case they were changed during uninstallation.  If they
   * were, then the broadcast will alert the OS to update the appropriate UIs.
   * This needs to be done regardless if the user canceled the uninstall
   * process or not.
   */
  if(WinRegKeyExists(HKEY_LOCAL_MACHINE, MOZ_CLIENT_BROWSER_KEY))
  {
    SendMessageTimeout(HWND_BROADCAST,
                       WM_SETTINGCHANGE,
                       0,
                       (LPARAM)MOZ_CLIENT_BROWSER_KEY,
                       SMTO_NORMAL|SMTO_ABORTIFHUNG,
                       MOZ_HWND_BROADCAST_MSG_TIMEOUT,
                       NULL);
  }
  if(WinRegKeyExists(HKEY_LOCAL_MACHINE, MOZ_CLIENT_MAIL_KEY))
  {
    SendMessageTimeout(HWND_BROADCAST,
                       WM_SETTINGCHANGE,
                       0,
                       (LPARAM)MOZ_CLIENT_MAIL_KEY,
                       SMTO_NORMAL|SMTO_ABORTIFHUNG,
                       MOZ_HWND_BROADCAST_MSG_TIMEOUT,
                       NULL);
  }
}

LRESULT CALLBACK DlgProcUninstall(HWND hDlg, UINT msg, WPARAM wParam, LONG lParam)
{
  char  szBuf[MAX_BUF];
  RECT  rDlg;

  switch(msg)
  {
    case WM_INITDIALOG:
      SetWindowText(hDlg, diUninstall.szTitle);
      wsprintf(szBuf, diUninstall.szMessage0, ugUninstall.szDescription);
      SetDlgItemText(hDlg, IDC_MESSAGE0, szBuf);
      GetPrivateProfileString("Dialog Uninstall", "Yes", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      SetDlgItemText(hDlg, IDWIZNEXT, szBuf);
      GetPrivateProfileString("Dialog Uninstall", "No", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      SetDlgItemText(hDlg, IDCANCEL, szBuf);
      SendDlgItemMessage (hDlg, IDC_MESSAGE0, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 
      SendDlgItemMessage (hDlg, IDWIZNEXT, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 
      SendDlgItemMessage (hDlg, IDCANCEL, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 

      if(GetClientRect(hDlg, &rDlg))
        SetWindowPos(hDlg, HWND_TOP, (dwScreenX/2)-(rDlg.right/2), (dwScreenY/2)-(rDlg.bottom/2), 0, 0, SWP_NOSIZE);

      break;

    case WM_COMMAND:
      switch(LOWORD(wParam))
      {
        case IDWIZNEXT:
          EnableWindow(GetDlgItem(hDlg, IDWIZNEXT), FALSE);
          EnableWindow(GetDlgItem(hDlg, IDCANCEL), FALSE);
          ParseAllUninstallLogs();
          // skip directory nuking for now (bug 233625) but may come back
          // if the issues can be resolved in a better way by bug 281235
          // VerifyAndDeleteInstallationFolder();
          DestroyWindow(hDlg);
          PostQuitMessage(0);
          break;

        case IDCANCEL:
          DestroyWindow(hDlg);
          PostQuitMessage(0);
          break;

        default:
          break;
      }
      break;
  }
  return(0);
}

LRESULT CALLBACK DlgProcWhatToDo(HWND hDlg, UINT msg, WPARAM wParam, LONG lParam)
{
  char  szBuf[MAX_BUF];
  RECT  rDlg;

  switch(msg)
  {
    case WM_INITDIALOG:
      GetPrivateProfileString("Messages", "DLG_REMOVE_FILE_TITLE", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      SetWindowText(hDlg, szBuf);

      if((LPSTR)lParam != NULL)
        SetDlgItemText(hDlg, IDC_STATIC_SHARED_FILENAME, (LPSTR)lParam);

      GetPrivateProfileString("Dialog Uninstall", "Message1", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      SetDlgItemText(hDlg, IDC_MESSAGE0, szBuf);
      GetPrivateProfileString("Dialog Uninstall", "Message2", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      SetDlgItemText(hDlg, IDC_MESSAGE1, szBuf);
      GetPrivateProfileString("Dialog Uninstall", "FileName", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      SetDlgItemText(hDlg, IDC_STATIC, szBuf);
      GetPrivateProfileString("Dialog Uninstall", "No", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      SetDlgItemText(hDlg, ID_NO, szBuf);
      GetPrivateProfileString("Dialog Uninstall", "NoToAll", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      SetDlgItemText(hDlg, ID_NO_TO_ALL, szBuf);
      GetPrivateProfileString("Dialog Uninstall", "Yes", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      SetDlgItemText(hDlg, ID_YES, szBuf);
      GetPrivateProfileString("Dialog Uninstall", "YesToAll", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      SetDlgItemText(hDlg, ID_YES_TO_ALL, szBuf);

      SendDlgItemMessage (hDlg, IDC_MESSAGE0, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 
      SendDlgItemMessage (hDlg, IDC_MESSAGE1, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 
      SendDlgItemMessage (hDlg, IDC_STATIC, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 
      SendDlgItemMessage (hDlg, IDC_STATIC_SHARED_FILENAME, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 
      SendDlgItemMessage (hDlg, ID_NO, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 
      SendDlgItemMessage (hDlg, ID_NO_TO_ALL, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 
      SendDlgItemMessage (hDlg, ID_YES, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 
      SendDlgItemMessage (hDlg, ID_YES_TO_ALL, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 

      if(GetClientRect(hDlg, &rDlg))
        SetWindowPos(hDlg, HWND_TOP, (dwScreenX/2)-(rDlg.right/2), (dwScreenY/2)-(rDlg.bottom/2), 0, 0, SWP_NOSIZE);

      break;

    case WM_COMMAND:
      switch(LOWORD(wParam))
      {
        case ID_NO:
          EndDialog(hDlg, WTD_NO);
          break;

        case ID_NO_TO_ALL:
          EndDialog(hDlg, WTD_NO_TO_ALL);
          break;

        case ID_YES:
          EndDialog(hDlg, WTD_YES);
          break;

        case ID_YES_TO_ALL:
          EndDialog(hDlg, WTD_YES_TO_ALL);
          break;

        default:
          break;
      }
      break;
  }
  return(0);
}

LRESULT CALLBACK DlgProcMessage(HWND hDlg, UINT msg, WPARAM wParam, LONG lParam)
{
  RECT      rDlg;
  HWND      hSTMessage = GetDlgItem(hDlg, IDC_MESSAGE); /* handle to the Static Text message window */
  HDC       hdcSTMessage;
  SIZE      sizeString;
  LOGFONT   logFont;
  HFONT     hfontTmp;
  HFONT     hfontOld;
  int       i;

  switch(msg)
  {
    case WM_INITDIALOG:
          SendDlgItemMessage (hDlg, IDC_MESSAGE, WM_SETFONT, (WPARAM)ugUninstall.definedFont, 0L); 
      break;

    case WM_COMMAND:
      switch(LOWORD(wParam))
      {
        case IDC_MESSAGE:
          hdcSTMessage = GetWindowDC(hSTMessage);

          SystemParametersInfo(SPI_GETICONTITLELOGFONT,
                               sizeof(logFont),
                               (PVOID)&logFont,
                               0);
          hfontTmp = CreateFontIndirect(&logFont);

          if(hfontTmp)
            hfontOld = SelectObject(hdcSTMessage, hfontTmp);

          GetTextExtentPoint32(hdcSTMessage, (LPSTR)lParam, lstrlen((LPSTR)lParam), &sizeString);
          SelectObject(hdcSTMessage, hfontOld);
          DeleteObject(hfontTmp);
          ReleaseDC(hSTMessage, hdcSTMessage);

          SetWindowPos(hDlg, HWND_TOP,
                      (dwScreenX/2)-((sizeString.cx + 40)/2), (dwScreenY/2)-((sizeString.cy + 40)/2),
                      sizeString.cx + 40, sizeString.cy + 40,
                      SWP_SHOWWINDOW);

          if(GetClientRect(hDlg, &rDlg))
            SetWindowPos(hSTMessage,
                         HWND_TOP,
                         rDlg.left,
                         rDlg.top,
                         rDlg.right,
                         rDlg.bottom,
                         SWP_SHOWWINDOW);

          for(i = 0; i < lstrlen((LPSTR)lParam); i++)
          {
            if((((LPSTR)lParam)[i] == '\r') || (((LPSTR)lParam)[i] == '\n')) 
              ((LPSTR)lParam)[i] = ' ';
          }

          SetDlgItemText(hDlg, IDC_MESSAGE, (LPSTR)lParam);
          break;
      }
      break;
  }
  return(0);
}

// This dialog proc must be used in conjunction with DLG_MESSAGE_CHK.
LRESULT CALLBACK DlgProcComplete(HWND hDlg, UINT msg, WPARAM wParam, LONG lParam)
{
  RECT rDlg;
  char text[256];
  LRESULT result = 0;

  switch(msg)
  {
    case WM_INITDIALOG:
      SetWindowText(hDlg, diUninstall.szTitle);

      GetPrivateProfileString("Dialog Uninstall", "OK", "",
                              text, sizeof(text), szFileIniUninstall);
      SetDlgItemText(hDlg, IDOK, text);

      GetPrivateProfileString("Messages", "MSG_UNINSTALL_COMPLETE", "",
                              text, sizeof(text), szFileIniUninstall);
      SetDlgItemText(hDlg, IDC_MESSAGE, text);

      GetPrivateProfileString("Messages", "MSG_UNINSTALL_SURVEY", "",
                              text, sizeof(text), szFileIniUninstall);
      if (text[0]) 
      {
        SetDlgItemText(hDlg, IDC_CHECKBOX, text);
      }
      else
      {
        // Hide the checkbox control if there is not survey text.
        ShowWindow(GetDlgItem(hDlg, IDC_CHECKBOX), SW_HIDE);
      }

      if(GetClientRect(hDlg, &rDlg))
        SetWindowPos(hDlg, HWND_TOP, (dwScreenX/2)-(rDlg.right/2), (dwScreenY/2)-(rDlg.bottom/2), 0, 0, SWP_NOSIZE);

      break;

    case WM_COMMAND:
      switch(LOWORD(wParam))
      {
        case IDOK:
          if (SendDlgItemMessage(hDlg, IDC_CHECKBOX, BM_GETCHECK, 0, 0) == BST_CHECKED)
          {
            EndDialog(hDlg, ID_YES_TO_ALL);
          }
          else 
          {
            EndDialog(hDlg, IDOK);
          }            
          break;
      }
      break;

    case WM_CLOSE:
      EndDialog(hDlg, IDOK);
      break;
  }
  return(0);
}

void ProcessWindowsMessages()
{
  MSG msg;

  while(PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
  {
    TranslateMessage(&msg);
    DispatchMessage(&msg);
  }
}

void ShowMessage(LPSTR szMessage, BOOL bShow)
{
  char szBuf[MAX_BUF];

  if(ugUninstall.mode != SILENT)
  {
    if((bShow) && (hDlgMessage == NULL))
    {
      ZeroMemory(szBuf, sizeof(szBuf));
      GetPrivateProfileString("Messages", "MB_MESSAGE_STR", "", szBuf, sizeof(szBuf), szFileIniUninstall);
      hDlgMessage = InstantiateDialog(hWndMain, DLG_MESSAGE, szBuf, DlgProcMessage);
      SendMessage(hDlgMessage, WM_COMMAND, IDC_MESSAGE, (LPARAM)szMessage);
    }
    else if(!bShow && hDlgMessage)
    {
      DestroyWindow(hDlgMessage);
      hDlgMessage = NULL;
    }
  }
}

HWND InstantiateDialog(HWND hParent, DWORD dwDlgID, LPSTR szTitle, WNDPROC wpDlgProc)
{
  char szBuf[MAX_BUF];
  HWND hDlg = NULL;

  if((hDlg = CreateDialog(hInst, MAKEINTRESOURCE(dwDlgID), hParent, wpDlgProc)) == NULL)
  {
    char szEDialogCreate[MAX_BUF];

    if(GetPrivateProfileString("Messages", "ERROR_DIALOG_CREATE", "", szEDialogCreate, sizeof(szEDialogCreate), szFileIniUninstall))
    {
      wsprintf(szBuf, szEDialogCreate, szTitle);
      PrintError(szBuf, ERROR_CODE_SHOW);
    }

    PostQuitMessage(1);
  }

  return(hDlg);
}