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When the Microsoft VC /MT static library version of DWGdirect is linked into an appliation application that uses the MFC Static Library (/MT configuration), the linker may issue errors described in the MS KB article Q148652: http://support.microsoft.com/default.aspx?scid=kb;[LN];Q148652.
This error occurs because TD_XXXX_Alloc.lib contains definitions for of the following functions:
odrxAlloc
odrxRealloc
odrxFree
operator new
operator delete
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DWG 2004 files can store a direct color or an RGB value, which allows a single drawing to store millions of unique color values. DWG files from R15 files and earlier versions can only store a color table index, which is a number representing one of 255 possible colors. When saving you save a DWG 2004 file back as DWG R15 or earlier, you must map each RGB value must be mapped to the closest color table entry and stored as a color table index. As a result, the colors in the DWG R15 file may look bleak or dreary when compared to the original DWG 2004 file. DWG R15 files saved from AutoCAD 2004 exhibit have the same behavior.
Similarly, gradient fills from DWG 2004 gradient fills are not supported in DWG R15. When saving a hatch with a gradient fill to a DWG R15 file, the fill is converted to a solid fill using the first of the 2 two gradient colors.
MText in DWG 2004 files can might contain tabs tab and indentation values , which that are not supported in DWG R15 and earlier files, and therefore, are lost when saving from DWG 2004 back to earlier versions. The formatting and appearance of MText may change.
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