Control_LoadApplet
Control_UnloadApplet
CPlApplet* Control_LoadApplet	(	HWND	hWnd,
		LPCWSTR	cmd,
		CPanel *	panel
	)
Definition at line 45 of file control.cpp.
Referenced by Control_DoLaunch(), Control_DoWindow(), and CControlPanelEnum::RegisterCPanelApp().
{
    CPlApplet*    applet;
    unsigned     i;
    CPLINFO    info;
    NEWCPLINFOW newinfo;

    if (!(applet = (CPlApplet *)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*applet))))
       return applet;

    applet->hWnd = hWnd;

    if (!(applet->hModule = LoadLibraryW(cmd)))
    {
        WARN("Cannot load control panel applet %s\n", debugstr_w(cmd));
        goto theError;
    }
    if (!(applet->proc = (APPLET_PROC)GetProcAddress(applet->hModule, "CPlApplet")))
    {
        WARN("Not a valid control panel applet %s\n", debugstr_w(cmd));
        goto theError;
    }
    if (!applet->proc(hWnd, CPL_INIT, 0L, 0L))
    {
        WARN("Init of applet has failed\n");
        goto theError;
    }
    if ((applet->count = applet->proc(hWnd, CPL_GETCOUNT, 0L, 0L)) == 0)
    {
        WARN("No subprogram in applet\n");
        goto theError;
    }

    applet = (CPlApplet *)HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, applet,
             sizeof(*applet) + (applet->count - 1) * sizeof(NEWCPLINFOW));

    for (i = 0; i < applet->count; i++)
    {
        ZeroMemory(&newinfo, sizeof(newinfo));
        newinfo.dwSize = sizeof(NEWCPLINFOW);
        applet->info[i].dwSize = sizeof(NEWCPLINFOW);
       /* proc is supposed to return a null value upon success for
    * CPL_INQUIRE and CPL_NEWINQUIRE
    * However, real drivers don't seem to behave like this
    * So, use introspection rather than return value
    */
        applet->proc(hWnd, CPL_NEWINQUIRE, i, (LPARAM)&newinfo);
        if (newinfo.hIcon == 0)
        {
            applet->proc(hWnd, CPL_INQUIRE, i, (LPARAM)&info);
            if (info.idIcon == 0 || info.idName == 0)
            {
                WARN("Couldn't get info from sp %u\n", i);
                applet->info[i].dwSize = 0;
            }
            else
            {
                /* convert the old data into the new structure */
                applet->info[i].dwFlags = 0;
                applet->info[i].dwHelpContext = 0;
                applet->info[i].lData = info.lData;
                applet->info[i].hIcon = LoadIconW(applet->hModule,
                                MAKEINTRESOURCEW(info.idIcon));
                LoadStringW(applet->hModule, info.idName,
                    applet->info[i].szName, sizeof(applet->info[i].szName) / sizeof(WCHAR));
                LoadStringW(applet->hModule, info.idInfo,
                    applet->info[i].szInfo, sizeof(applet->info[i].szInfo) / sizeof(WCHAR));
                applet->info[i].szHelpFile[0] = '\0';
            }
        }
        else
        {
            CopyMemory(&applet->info[i], &newinfo, newinfo.dwSize);
            if (newinfo.dwSize != sizeof(NEWCPLINFOW))
            {
                applet->info[i].dwSize = sizeof(NEWCPLINFOW);
                lstrcpyW(applet->info[i].szName, newinfo.szName);
                lstrcpyW(applet->info[i].szInfo, newinfo.szInfo);
                lstrcpyW(applet->info[i].szHelpFile, newinfo.szHelpFile);
            }
        }
    }

    applet->next = panel->first;
    panel->first = applet;

    return applet;

 theError:
    Control_UnloadApplet(applet);
    return NULL;
}
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