hen
begin // Expand the current region
CombineRgn(Result, Result, h, RGN_OR);
DeleteObject(h);
end
else // First region, assign it to Result
Result := h;
RgnData^.rdh.nCount := 0;
SetRect(RgnData^.rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
end;
Inc(x);
end; // scan every sample byte of the image
Inc(Integer(ScanLinePtr), ScanLineInc);
end;
{ need to call ExCreateRegion one more time because we could have left }
{ a RgnData with less than 2000 rects, so it wasn''''t yet created/combined }
h := ExtCreateRegion(nil, SizeOf(RGNDATAHEADER) + (SizeOf(TRect) * MaxRects), RgnData^);
if Result > 0 then
begin
CombineRgn(Result, Result, h, RGN_OR);
DeleteObject(h);
end
else
Result := h;
finally
FreeMem(RgnData,SizeOf(RGNDATAHEADER) + (SizeOf(TRect) * MaxRects));
end;
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