src/video/win32/SDL_win32mouse.c
author Szymon Wilczek <kazeuser@gmail.com>
Sat, 03 Jan 2009 12:00:20 +0000
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parent 2974 d2f68ec8c1d0
child 2990 502adab079a4
permissions -rw-r--r--
Bug 653 bugfix
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2009 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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/* we need to define it, so that raw input is included*/
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#if (_WIN32_WINNT < 0x0501)
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#undef _WIN32_WINNT
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#define _WIN32_WINNT 0x0501
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#endif
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#include "SDL_config.h"
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#include "SDL_win32video.h"
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#include "../../events/SDL_mouse_c.h"
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extern HANDLE *mice;
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extern int total_mice;
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extern int tablet;
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void
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WIN_InitMouse(_THIS)
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{
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    int index = 0;
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    RAWINPUTDEVICELIST *deviceList = NULL;
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    int devCount = 0;
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    int i;
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    int tmp = 0;
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    char *buffer = NULL;
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    char *tab = "wacom";        /* since windows does't give us handles to tablets, we have to detect a tablet by it's name */
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    const char *rdp = "rdp_mou";
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    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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    /* we're checking for the number of rawinput devices */
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    if (GetRawInputDeviceList(NULL, &devCount, sizeof(RAWINPUTDEVICELIST))) {
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        return;
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    }
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    deviceList = SDL_malloc(sizeof(RAWINPUTDEVICELIST) * devCount);
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    /* we're getting the raw input device list */
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    GetRawInputDeviceList(deviceList, &devCount, sizeof(RAWINPUTDEVICELIST));
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    mice = SDL_malloc(devCount * sizeof(HANDLE));
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    /* we're getting the details of the devices */
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    for (i = 0; i < devCount; ++i) {
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        int is_rdp = 0;
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        int j;
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        int k;
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        char *default_device_name = "Pointing device xx";
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        const char *reg_key_root = "System\\CurrentControlSet\\Enum\\";
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        char *device_name = SDL_malloc(256 * sizeof(char));
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        char *key_name = NULL;
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        char *tmp_name = NULL;
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        LONG rc = 0;
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        HKEY hkey;
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        DWORD regtype = REG_SZ;
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        DWORD out = 256 * sizeof(char);
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        SDL_Mouse mouse;
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        int l;
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        if (deviceList[i].dwType != RIM_TYPEMOUSE) {    /* if a device isn't a mouse type we don't want it */
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            continue;
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        }
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        if (GetRawInputDeviceInfoA
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            (deviceList[i].hDevice, RIDI_DEVICENAME, NULL, &tmp) < 0) {
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            continue;
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        }
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        buffer = SDL_malloc((tmp + 1) * sizeof(char));
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        key_name = SDL_malloc((tmp + SDL_strlen(reg_key_root) + 1) * sizeof(char));
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        /* we're getting the device registry path and polishing it to get it's name,
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           surely there must be an easier way, but we haven't found it yet */
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        if (GetRawInputDeviceInfoA
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            (deviceList[i].hDevice, RIDI_DEVICENAME, buffer, &tmp) < 0) {
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            continue;
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        }
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        buffer += 4;
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        tmp -= 4;
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        tmp_name = buffer;
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        for (j = 0; j < tmp; ++j) {
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            if (*tmp_name == '#') {
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                *tmp_name = '\\';
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            }
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            else if (*tmp_name == '{') {
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                break;
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            }
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            ++tmp_name;
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        }
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        *tmp_name = '\0';
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        SDL_memcpy(key_name, reg_key_root, SDL_strlen(reg_key_root));
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        SDL_memcpy(key_name + (SDL_strlen(reg_key_root)), buffer, j + 1);
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        l = SDL_strlen(key_name);
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        is_rdp = 0;
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        if (l >= 7) {
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            for (j = 0; j < l - 7; ++j) {
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                for (k = 0; k < 7; ++k) {
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                    if (rdp[k] !=
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                        SDL_tolower((unsigned char) key_name[j + k])) {
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                        break;
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                    }
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                }
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                if (k == 7) {
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                    is_rdp = 1;
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                    break;
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                }
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            }
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        }
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		buffer -= 4;
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        if (is_rdp == 1) {
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            SDL_free(buffer);
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            SDL_free(key_name);
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            SDL_free(device_name);
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            is_rdp = 0;
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            continue;
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        }
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   138
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        /* we're opening the registry key to get the mouse name */
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        rc = RegOpenKeyExA(HKEY_LOCAL_MACHINE, key_name, 0, KEY_READ, &hkey);
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        if (rc != ERROR_SUCCESS) {
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            SDL_memcpy(device_name, default_device_name,
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                       SDL_strlen(default_device_name));
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        }
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        rc = RegQueryValueExA(hkey, "DeviceDesc", NULL, &regtype, device_name,
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                              &out);
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        RegCloseKey(hkey);
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        if (rc != ERROR_SUCCESS) {
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            SDL_memcpy(device_name, default_device_name,
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                       SDL_strlen(default_device_name));
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        }
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        /* we're saving the handle to the device */
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        mice[index] = deviceList[i].hDevice;
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        SDL_zero(mouse);
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        mouse.id = index;
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        l = SDL_strlen(device_name);
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   158
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        /* we're checking if the device isn't by any chance a tablet */
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        if (data->wintabDLL && tablet == -1) {
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            for (j = 0; j < l - 5; ++j) {
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                for (k = 0; k < 5; ++k) {
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                    if (tab[k] !=
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                        SDL_tolower((unsigned char) device_name[j + k])) {
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                        break;
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                    }
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                }
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   168
                if (k == 5) {
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   169
                    tablet = index;
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                    break;
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   171
                }
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            }
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        }
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   174
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        /* if it's a tablet, let's read it's maximum and minimum pressure */
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   176
        if (tablet == index) {
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            AXIS pressure;
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   178
            int cursors;
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   179
            data->WTInfoA(WTI_DEVICES, DVC_NPRESSURE, &pressure);
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            data->WTInfoA(WTI_DEVICES, DVC_NCSRTYPES, &cursors);
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   181
            SDL_AddMouse(&mouse, device_name, pressure.axMax, pressure.axMin, cursors);
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   182
        } else {
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   183
            SDL_AddMouse(&mouse, device_name, 0, 0, 1);
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diff changeset
   184
        }
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   185
        ++index;
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   186
        SDL_free(buffer);
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   187
        SDL_free(key_name);
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diff changeset
   188
    }
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   189
    total_mice = index;
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   190
    SDL_free(deviceList);
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   191
}
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parents:
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   192
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   193
void
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diff changeset
   194
WIN_QuitMouse(_THIS)
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parents:
diff changeset
   195
{
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parents:
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   196
    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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parents:
diff changeset
   197
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   198
    /* let's delete all of the mice */
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   199
    SDL_MouseQuit();
1895
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   200
}
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parents:
diff changeset
   201
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   202
/* vi: set ts=4 sw=4 expandtab: */