Hello,
I'm having some trouble working with window 'regions'. I need to initialize
some memory for the region and work with it.
I have copied my best approach so far, but I know I don't know what I'm
doing when it comes to the 'Buffer' field in RGNDATA. MSDN describes what
HRGN points to (a RGNDATA struct) as:
typedef struct _RGNDATA {
RGNDATAHEADER rdh;
char Buffer[1];
} RGNDATA, *PRGNDATA;
*Buffer* Specifies an arbitrary-size buffer that contains the
*RECT*structures that make up the region.How
do I create an arbitrary-size buffer and initialize it? That doesn't really
make a lot of sense to me.
DWORD = c_ulong
class RECT(Structure):
_fields_ = [('left', c_long),
('top', c_long),
('right', c_long),
('bottom', c_long)]
class RGNDATAHEADER(Structure):
_fields_ = [('dwSize', DWORD),
('iType', DWORD),
('nCount', DWORD),
('nRgnSize', DWORD),
('rcBound', RECT)]
class RGNDATA(Structure):
_fields_ = [('rdh', RGNDATAHEADER),
('Buffer', c_void_p)]
HRGN = POINTER(RGNDATA)
Specifically I am looking to use SetWindowRgn, CreateRoundRectRgn,
CreatePolygonRgn, and possibly modify the RGNDATA structure directly if
possible.
--
Henry
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