389 lines
9.7 KiB
C++
389 lines
9.7 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1998 - 1999
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//
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// File: irprops.cpp
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//
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//--------------------------------------------------------------------------
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// irprops.cpp : Defines the initialization routines for the DLL.
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//
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#include "precomp.hxx"
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#include "irprops.h"
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#include "irpropsheet.h"
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#include "debug.h"
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BOOL InitInstance();
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INT ExitInstance();
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BOOL IsFirstInstance();
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INT_PTR WINAPI DoPropertiesA(HWND hwnd, LPCSTR CmdLine);
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INT_PTR WINAPI DoPropertiesW(HWND hwnd, LPCWSTR CmdLine);
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HINSTANCE gHInst;
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//
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// This records the current active property sheet window handle created
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// by this instance. It is set/reset by CIrPropSheet object.
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//
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HWND g_hwndPropSheet = NULL;
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HANDLE g_hMutex = NULL;
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BOOL g_bFirstInstance = TRUE;
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//
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// This records our registered message for inter-instances communications
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// The message is registered in CIrpropsApp::InitInstance.
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//
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UINT g_uIPMsg;
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#undef THIS_FILE
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static char THIS_FILE[] = __FILE__;
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#endif
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extern "C" {
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BOOL APIENTRY
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DllMain(HANDLE hDll,
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DWORD dwReason,
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LPVOID lpReserved)
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{
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IRINFO((_T("DllMain reason %x"), dwReason));
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switch (dwReason) {
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case DLL_PROCESS_ATTACH:
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gHInst = (HINSTANCE) hDll;
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return InitInstance();
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break;
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case DLL_PROCESS_DETACH:
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return ExitInstance();
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break;
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case DLL_THREAD_DETACH:
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break;
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case DLL_THREAD_ATTACH:
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break;
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default:
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break;
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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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//some globals
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APPLETS IRApplet[NUM_APPLETS] = {
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{IDI_IRPROPS, IDS_APPLETNAME, IDS_APPLETDESC}
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};
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/////////////////////////////////////////////////////////////////////////
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// CPlApplet function for the control panel
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//
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LONG CALLBACK CPlApplet(
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HWND hwndCPL,
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UINT uMsg,
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LPARAM lParam1,
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LPARAM lParam2)
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{
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int i;
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LPCPLINFO lpCPlInfo;
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i = (int) lParam1;
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IRINFO((_T("CplApplet message %x"), uMsg));
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switch (uMsg)
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{
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case CPL_INIT: // first message, sent once
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if (!IrPropSheet::IsIrDASupported()) {
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HPSXA hpsxa;
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//
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// Check for any installed extensions.
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//
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hpsxa = SHCreatePropSheetExtArray(HKEY_LOCAL_MACHINE, sc_szRegWireless, 8);
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if (hpsxa) {
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//
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// We have extensions installed so we have to show the CPL,
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// whether IRDA exists or not.
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//
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SHDestroyPropSheetExtArray(hpsxa);
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return TRUE;
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}
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return FALSE;
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}
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return TRUE;
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case CPL_GETCOUNT: // second message, sent once
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return NUM_APPLETS;
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break;
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case CPL_INQUIRE: // third message, sent once per application
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lpCPlInfo = (LPCPLINFO) lParam2;
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lpCPlInfo->lData = 0;
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lpCPlInfo->idIcon = IRApplet[i].icon;
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lpCPlInfo->idName = IRApplet[i].namestring;
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lpCPlInfo->idInfo = IRApplet[i].descstring;
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break;
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case CPL_STARTWPARMSA:
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if (-1 == DoPropertiesA(hwndCPL, (LPCSTR)lParam2))
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MsgBoxWinError(hwndCPL);
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// return true so that we won't get CPL_DBLCLK.
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return 1;
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break;
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case CPL_STARTWPARMSW:
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if (-1 == DoPropertiesW(hwndCPL, (LPCWSTR)lParam2))
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MsgBoxWinError(hwndCPL);
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// return true so that we won't get CPL_DBLCLK.
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return 1;
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break;
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case CPL_DBLCLK: // application icon double-clicked
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if (-1 == DoPropertiesA(hwndCPL, (LPCSTR)lParam2))
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MsgBoxWinError(hwndCPL);
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return 1;
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break;
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case CPL_STOP: // sent once per application before CPL_EXIT
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break;
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case CPL_EXIT: // sent once before FreeLibrary is called
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break;
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default:
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break;
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}
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return 0;
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}
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//
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// This function presents the Wireless link property sheet.
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// INPUT:
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// hwndParent -- window handle to be used as parent window of
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// the property sheet
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// lpCmdLine -- optional command line
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// 'n" (n in decimal) is start page number(zero-based).
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// OUTPUT:
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// Return value of PropertySheet API
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INT_PTR
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DoPropertiesW(
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HWND hwndParent,
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LPCWSTR lpCmdLine
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)
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{
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INT_PTR Result;
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INT StartPage;
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IRINFO((_T("DoPropertiesW")));
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//
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// Assuming no start page was specified.
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//
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StartPage = -1;
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//
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// Command line specifies start page number
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//
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if (lpCmdLine)
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{
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// skip white chars
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while (_T('\0') != *lpCmdLine &&
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(_T(' ') == *lpCmdLine || _T('\t') == *lpCmdLine))
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{
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lpCmdLine++;
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}
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if (_T('0') <= *lpCmdLine && _T('9') >= *lpCmdLine)
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{
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StartPage = 0;
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do
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{
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StartPage = StartPage * 10 + *lpCmdLine - _T('0');
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lpCmdLine++;
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} while (_T('0') <= *lpCmdLine && _T('9') >= *lpCmdLine);
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}
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}
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if (!IsFirstInstance() || NULL != g_hwndPropSheet)
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{
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IRINFO((_T("Not the first instance")));
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HWND hwndPropSheet = HWND_DESKTOP;
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if (NULL == g_hwndPropSheet)
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{
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IRINFO((_T("No window created")));
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//
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// We are not the first instance. Look for the property sheet
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// window created by the first instance.
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//
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EnumWindows(EnumWinProc, (LPARAM)&hwndPropSheet);
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}
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else
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{
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IRINFO((_T("Window active")));
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//
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// This is not the first call and we have a
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// property sheet active(same process, multiple calls)
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//
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hwndPropSheet = g_hwndPropSheet;
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}
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if (HWND_DESKTOP != hwndPropSheet)
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{
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IRINFO((_T("Found the active property sheet.")));
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//
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// We found the active property sheet
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//
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// Select the new active page if necessary
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//
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if (-1 != StartPage)
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PropSheet_SetCurSel(hwndPropSheet, NULL, StartPage);
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//
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// bring the property sheet to the foreground.
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//
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::SetForegroundWindow(hwndPropSheet);
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}
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Result = IDCANCEL;
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}
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else
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{
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IRINFO((_T("First instance, creating propertysheet")));
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IrPropSheet PropSheet(gHInst, IDS_APPLETNAME, hwndParent, StartPage);
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}
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return Result;
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}
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//
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// This is our callback function for EnumWindows API.
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// It probes for each window handle to see if it is the property sheet
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// window created by the previous instance. If it is, it returns
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// the window handle in the provided buffer, lParam)
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// Input:
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// hWnd -- the window handle
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// lParam -- (HWND *)
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// Output:
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// TRUE -- Let Windows continue to call us
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// FALSE -- Stop Windows from calling us again
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//
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BOOL
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CALLBACK
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EnumWinProc(
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HWND hWnd,
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LPARAM lParam
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)
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{
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//
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// Verify with this window to see if it is the one we are looking for.
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//
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LRESULT lr;
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lr = ::SendMessage(hWnd, g_uIPMsg, (WPARAM)IPMSG_SIGNATURECHECK,
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(LPARAM)IPMSG_REQUESTSIGNATURE);
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if (IPMSG_REPLYSIGNATURE == lr)
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{
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if (lParam)
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{
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// this is the one
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*((HWND *)(lParam)) = hWnd;
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}
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//
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// We are done with enumeration.
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//
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return FALSE;
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}
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return TRUE;
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}
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INT_PTR
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DoPropertiesA(
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HWND hwndParent,
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LPCSTR lpCmdLine
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)
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{
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WCHAR CmdLineW[MAX_PATH];
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UINT Size;
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if (!lpCmdLine)
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return DoPropertiesW(hwndParent, NULL);
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MultiByteToWideChar(CP_ACP, 0, lpCmdLine, -1, CmdLineW, sizeof(CmdLineW) / sizeof(WCHAR));
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return DoPropertiesW(hwndParent, CmdLineW);
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}
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// This function creates and displays a message box for the given
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// win32 error(or last error)
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// INPUT:
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// hwndParent -- the parent window for the will-be-created message box
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// Type -- message styles(MB_xxxx)
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// Error -- Error code. If the value is 0
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// GetLastError() will be called to retreive the
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// real error code.
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// CaptionId -- optional string id for caption
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// OUTPUT:
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// the value return from MessageBox
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//
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int
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MsgBoxWinError(
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HWND hwndParent,
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DWORD Options,
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DWORD Error,
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int CaptionId
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)
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{
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if (ERROR_SUCCESS == Error)
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Error = GetLastError();
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// nonsense to report success!
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if (ERROR_SUCCESS == Error)
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return IDOK;
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TCHAR szMsg[MAX_PATH];
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TCHAR szCaption[MAX_PATH];
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if (!CaptionId)
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CaptionId = IDS_APPLETNAME;
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::LoadString(gHInst, CaptionId, szCaption, sizeof(szCaption) / sizeof(TCHAR));
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FormatMessage(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
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NULL, Error, MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL),
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szMsg, sizeof(szMsg) / sizeof(TCHAR), NULL);
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return MessageBox(hwndParent, szMsg, szCaption, Options);
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}
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BOOL InitInstance()
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{
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//
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// Try to create a named mutex. This give us a clue
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// if we are the first instance. We will not close
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// the mutex until exit.
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//
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g_hMutex = CreateMutex(NULL, TRUE, SINGLE_INST_MUTEX);
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if (g_hMutex)
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{
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g_bFirstInstance = ERROR_ALREADY_EXISTS != GetLastError();
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//
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// register a message for inter-instances communication
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//
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g_uIPMsg = RegisterWindowMessage(WIRELESSLINK_INTERPROCESSMSG);
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SHFusionInitializeFromModuleID(gHInst, 124);
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return TRUE;
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}
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return FALSE;
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}
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BOOL ExitInstance()
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{
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if (g_hMutex)
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{
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CloseHandle(g_hMutex);
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g_hMutex = NULL;
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}
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SHFusionUninitialize();
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return TRUE;
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}
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BOOL IsFirstInstance()
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{
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return g_bFirstInstance;
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}
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