Difference between revisions of "Techwiki:Win32k/BASEOBJECT"
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Windows XP, Windows 2003 and Vista, same for 64 Bit Versions: | Windows XP, Windows 2003 and Vista, same for 64 Bit Versions: | ||
<source lang="c"> | <source lang="c"> | ||
| − | + | typedef struct _BASEOBJECT | |
| − | + | { | |
| − | + | HANDLE hHmgr; // 0x00 | |
| − | + | ULONG ulShareCount; // 0x04 | |
| − | + | USHORT cExclusiveLock; // 0x08 | |
| − | + | USHORT BaseFlags; // 0x0a | |
| − | + | PW32THREAD Tid; // 0x0c | |
| − | + | } BASEOBJECT, *POBJ; | |
typedef struct _BASEOBJECT DD_BASEOBJECT, *PDD_BASEOBJECT; //(correct?) | typedef struct _BASEOBJECT DD_BASEOBJECT, *PDD_BASEOBJECT; //(correct?) | ||
</source> | </source> | ||
| − | + | ||
| + | ''hHmgr'' | ||
| + | :Gdi handle for the object, if the object is in the handle table. NULL otherwise. | ||
| + | |||
| + | ''ulShareCount'' | ||
| + | :Number of references to the object. | ||
| + | |||
| + | ''cExclusiveLock'' | ||
| + | :Number of exclusive locks held by a thread. These are only held for a short time and only for some of the object types. | ||
''BaseFlags'' | ''BaseFlags'' | ||
Latest revision as of 13:02, 3 April 2011
The GDI Base Object, which is a header at the top of every GDI Object. The structure is called BASEOBJECT and is defined as follows for Windows XP, Windows 2003 and Vista, same for 64 Bit Versions:
typedef struct _BASEOBJECT
{
HANDLE hHmgr; // 0x00
ULONG ulShareCount; // 0x04
USHORT cExclusiveLock; // 0x08
USHORT BaseFlags; // 0x0a
PW32THREAD Tid; // 0x0c
} BASEOBJECT, *POBJ;
typedef struct _BASEOBJECT DD_BASEOBJECT, *PDD_BASEOBJECT; //(correct?)
hHmgr
- Gdi handle for the object, if the object is in the handle table. NULL otherwise.
ulShareCount
- Number of references to the object.
cExclusiveLock
- Number of exclusive locks held by a thread. These are only held for a short time and only for some of the object types.
BaseFlags
- 0x800 for objects that are allocated from a lookaside list (DC, region, bitmap, palette, font and brush)
