GetObject with empty buffer
Uwe Bonnes
bon at elektron.ikp.physik.tu-darmstadt.de
Thu Aug 29 07:09:49 CDT 2002
>>>>> "Fabian" == Fabian Cenedese <Cenedese at indel.ch> writes:
...
Fabian> <MSDN> If the lpvObject parameter is NULL, the function return
Fabian> value is the number of bytes required to store the information
Fabian> it writes to the buffer for the specified graphics object.
Fabian> </MSDN>
Fabian> But I couldn't find this anywhere, not in the general function
Fabian> in gdiobj.c nor in the subtypes FONT_GetObject or
Fabian> BRUSH_GetObject (sure others neither). As my app uses this
Fabian> feature Wine tries to memcpy to a NULL pointer and jumps out of
Fabian> the window... literally :)
FONT_GetObject sure checks:
if(buffer)
memcpy( buffer, &lfA, count );
return count;
BRUSH_GetObject does not:
if (count > sizeof(brush->logbrush)) count = sizeof(brush->logbrush);
memcpy( buffer, &brush->logbrush, count );
return count;
Someone has to carefully check all subtypes...
Bye
--
Uwe Bonnes bon at elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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