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Fixed return values of GetRegionData.

This commit is contained in:
Sergei Ivanov 2000-09-29 00:25:18 +00:00 committed by Alexandre Julliard
parent ced43b914d
commit 3b216de5cd
1 changed files with 13 additions and 2 deletions
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15
objects/region.c
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@ -841,6 +841,14 @@ HRGN WINAPI CreateEllipticRgnIndirect( const RECT *rect )
/*********************************************************************** /***********************************************************************
* GetRegionData (GDI32.217) * GetRegionData (GDI32.217)
* *
* MSDN: GetRegionData, Return Values:
*
* "If the function succeeds and dwCount specifies an adequate number of bytes,
* the return value is always dwCount. If dwCount is too small or the function
* fails, the return value is 0. If lpRgnData is NULL, the return value is the
* required number of bytes.
*
* If the function fails, the return value is zero."
*/ */
DWORD WINAPI GetRegionData(HRGN hrgn, DWORD count, LPRGNDATA rgndata) DWORD WINAPI GetRegionData(HRGN hrgn, DWORD count, LPRGNDATA rgndata)
{ {
@ -856,7 +864,10 @@ DWORD WINAPI GetRegionData(HRGN hrgn, DWORD count, LPRGNDATA rgndata)
if(count < (size + sizeof(RGNDATAHEADER)) || rgndata == NULL) if(count < (size + sizeof(RGNDATAHEADER)) || rgndata == NULL)
{ {
GDI_ReleaseObj( hrgn ); GDI_ReleaseObj( hrgn );
return size + sizeof(RGNDATAHEADER); if (rgndata)
return size + sizeof(RGNDATAHEADER);
else
return 0;
} }
rgndata->rdh.dwSize = sizeof(RGNDATAHEADER); rgndata->rdh.dwSize = sizeof(RGNDATAHEADER);
@ -871,7 +882,7 @@ DWORD WINAPI GetRegionData(HRGN hrgn, DWORD count, LPRGNDATA rgndata)
memcpy( rgndata->Buffer, obj->rgn->rects, size ); memcpy( rgndata->Buffer, obj->rgn->rects, size );
GDI_ReleaseObj( hrgn ); GDI_ReleaseObj( hrgn );
return 1; return size + sizeof(RGNDATAHEADER);
} }
/*********************************************************************** /***********************************************************************