I tried to add the attached WMF to the imagelist of tree-control. The "select-file dialogue" offers WMF, but nothing happens: no message, no error, no result.
Is it a problem of the WMF?
That looks like a bug. I will investigate. Note that image list images must have definite dimensions. Since WMF files are not raster files, they do not contain dimensions per se. I'm not sure how this should work if no image size has yet been defined for the image list.
The next build of OpenDCL should import .wmf images correctly. I've also made some changes so that images are resized to make them match the existing size for the image list.
That's fine, Owen.
Thanks for the continuous improvement of this software :)