Misleading return val of RenderDocument()

[Helper]

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On 12/08/2009 at 15:21, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   R11 
Platform:   Windows  ;   Mac OSX  ; 
Language(s) :     C++  ;

---------
Hello,
when you call RenderDocument() an image that is too small to cover the rendering, nothing is rendered _but_ RAY_OK is returned.

like:

RenderData* rdata = doc->GetActiveRenderData();
BaseContainer _rdata = rdata->GetData();

AutoAlloc<BaseBitmap> bmp;
bmp->Init(_rdata.GetReal(RDATA_XRES) -1, _rdata.GetReal(RDATA_YRES) -1 ) != IMAGE_OK)

if (RenderDocument(doc, _rdata, NULL, NULL, bmp, RENDERFLAG_SHOWERRORS, NULL) != RAY_OK)
{
    return FALSE; // this will not be reached
}

Is this by design? I'd guess that when no rendering took place the return value would be different from RAY_OK.

Cheers.