Canvas graphics editor supports export to many graphics or even CAD formats including DXF format. This can be done using the default save as.. function. Used mainly for vector graphics, won't probably work for bitmaps well.
Convert Canvas drawing to AutoCAD DXF Drawing Exchange Format.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert cvx to dxf on Windows
A drawing software used to create technical illustrations and graphics
Convert from cvx file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.