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gdi32: Store a separate flag to mark a GDI object for delayed destruction.

This commit is contained in:
Alexandre Julliard 2009-01-29 16:28:57 +01:00
parent 827e1f1de3
commit 73593cbf5a
3 changed files with 19 additions and 17 deletions
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2
dlls/gdi32/bitmap.c
View File

@ -586,7 +586,7 @@ static HGDIOBJ BITMAP_SelectObject( HGDIOBJ handle, HDC hdc )
goto done;
}
if (bitmap->header.dwCount && (handle != GetStockObject(DEFAULT_BITMAP)))
if (bitmap->header.selcount && (handle != GetStockObject(DEFAULT_BITMAP)))
{
WARN( "Bitmap already selected in another DC\n" );
GDI_ReleaseObj( handle );

7
dlls/gdi32/gdi_private.h
View File

@ -59,9 +59,10 @@ struct hdc_list
typedef struct tagGDIOBJHDR
{
WORD type;
WORD system : 1;
DWORD dwCount;
WORD type; /* object type (one of the OBJ_* constants) */
WORD system : 1; /* system object flag */
WORD deleted : 1; /* whether DeleteObject has been called on this object */
DWORD selcount; /* number of times the object is selected in a DC */
const struct gdi_obj_funcs *funcs;
struct hdc_list *hdcs;
} GDIOBJHDR;

27
dlls/gdi32/gdiobj.c
View File

@ -528,7 +528,7 @@ HGDIOBJ GDI_inc_ref_count( HGDIOBJ handle )
if ((header = GDI_GetObjPtr( handle, 0 )))
{
header->dwCount++;
header->selcount++;
GDI_ReleaseObj( handle );
}
else handle = 0;
@ -548,16 +548,16 @@ BOOL GDI_dec_ref_count( HGDIOBJ handle )
if ((header = GDI_GetObjPtr( handle, 0 )))
{
if (header->dwCount) header->dwCount--;
if (header->dwCount != 0x80000000) GDI_ReleaseObj( handle );
else
assert( header->selcount );
if (!--header->selcount && header->deleted)
{
/* handle delayed DeleteObject*/
header->dwCount = 0;
header->deleted = 0;
GDI_ReleaseObj( handle );
TRACE( "executing delayed DeleteObject for %p\n", handle );
DeleteObject( handle );
}
else GDI_ReleaseObj( handle );
}
return header != NULL;
}
@ -641,11 +641,12 @@ HGDIOBJ alloc_gdi_handle( GDIOBJHDR *obj, WORD type, const struct gdi_obj_funcs
int i;
/* initialize the object header */
obj->type = type;
obj->system = 0;
obj->dwCount = 0;
obj->funcs = funcs;
obj->hdcs = NULL;
obj->type = type;
obj->system = 0;
obj->deleted = 0;
obj->selcount = 0;
obj->funcs = funcs;
obj->hdcs = NULL;
_EnterSysLevel( &GDI_level );
for (i = next_large_handle + 1; i < MAX_LARGE_HANDLES; i++)
@ -796,10 +797,10 @@ BOOL WINAPI DeleteObject( HGDIOBJ obj )
if (!header) return FALSE;
}
if (header->dwCount)
if (header->selcount)
{
TRACE("delayed for %p because object in use, count %d\n", obj, header->dwCount );
header->dwCount |= 0x80000000; /* mark for delete */
TRACE("delayed for %p because object in use, count %u\n", obj, header->selcount );
header->deleted = 1; /* mark for delete */
GDI_ReleaseObj( obj );
return TRUE;
}