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user32: Clean up GetRawInputDeviceInfo. 

Signed-off-by: Andrew Eikum <aeikum@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Andrew Eikum 2019-10-30 14:26:28 -05:00 committed by Alexandre Julliard
parent 4a58d67106
commit 0b7f4b40cf
1 changed files with 46 additions and 43 deletions
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89
dlls/user32/rawinput.c
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@ -404,80 +404,83 @@ UINT WINAPI GetRawInputDeviceInfoW(HANDLE device, UINT command, void *data, UINT
static const WCHAR mouse_name[] = {'\\','\\','?','\\','W','I','N','E','_','M','O','U','S','E',0};
static const RID_DEVICE_INFO_KEYBOARD keyboard_info = {0, 0, 1, 12, 3, 101};
static const RID_DEVICE_INFO_MOUSE mouse_info = {1, 5, 0, FALSE};
struct hid_device *hid_device;
const WCHAR *name = NULL;
RID_DEVICE_INFO *info;
UINT s;
RID_DEVICE_INFO info;
struct hid_device *hid_device = device;
const void *to_copy;
UINT to_copy_bytes, avail_bytes;
TRACE("device %p, command %#x, data %p, data_size %p.\n",
device, command, data, data_size);
if (!data_size) return ~0U;
/* each case below must set:
* *data_size: length (meaning defined by command) of data we want to copy
* avail_bytes: number of bytes available in user buffer
* to_copy_bytes: number of bytes we want to copy into user buffer
* to_copy: pointer to data we want to copy into user buffer
*/
switch (command)
{
case RIDI_DEVICENAME:
/* for RIDI_DEVICENAME, data_size is in characters, not bytes */
avail_bytes = *data_size * sizeof(WCHAR);
if (device == WINE_MOUSE_HANDLE)
{
s = ARRAY_SIZE(mouse_name);
name = mouse_name;
*data_size = ARRAY_SIZE(mouse_name);
to_copy = mouse_name;
}
else if (device == WINE_KEYBOARD_HANDLE)
{
s = ARRAY_SIZE(keyboard_name);
name = keyboard_name;
*data_size = ARRAY_SIZE(keyboard_name);
to_copy = keyboard_name;
}
else
{
hid_device = device;
s = strlenW(hid_device->path) + 1;
name = hid_device->path;
*data_size = strlenW(hid_device->path) + 1;
to_copy = hid_device->path;
}
to_copy_bytes = *data_size * sizeof(WCHAR);
break;
case RIDI_DEVICEINFO:
s = sizeof(*info);
avail_bytes = *data_size;
info.cbSize = sizeof(info);
if (device == WINE_MOUSE_HANDLE)
{
info.dwType = RIM_TYPEMOUSE;
info.u.mouse = mouse_info;
}
else if (device == WINE_KEYBOARD_HANDLE)
{
info.dwType = RIM_TYPEKEYBOARD;
info.u.keyboard = keyboard_info;
}
else
{
info.dwType = RIM_TYPEHID;
info.u.hid = hid_device->info;
}
to_copy_bytes = sizeof(info);
*data_size = to_copy_bytes;
to_copy = &info;
break;
default:
FIXME("command %#x not supported\n", command);
return ~0U;
}
if (!data)
{
*data_size = s;
return 0;
}
if (*data_size < s)
{
*data_size = s;
if (avail_bytes < to_copy_bytes)
return ~0U;
}
if (command == RIDI_DEVICENAME)
{
memcpy(data, name, s * sizeof(WCHAR));
return s;
}
memcpy(data, to_copy, to_copy_bytes);
info = data;
info->cbSize = sizeof(*info);
if (device == WINE_MOUSE_HANDLE)
{
info->dwType = RIM_TYPEMOUSE;
info->u.mouse = mouse_info;
}
else if (device == WINE_KEYBOARD_HANDLE)
{
info->dwType = RIM_TYPEKEYBOARD;
info->u.keyboard = keyboard_info;
}
else
{
hid_device = device;
info->dwType = RIM_TYPEHID;
info->u.hid = hid_device->info;
}
return s;
return *data_size;
}
/***********************************************************************