Um... Tahoma doesn't have overhangs/underhangs but that shouldn't make the function return 0's. Hmmm...
[Update] It's not even writing to the bank. Strange...
[Update] I guess (I'm not quite sure how to test) that Blitz doesn't use the fonts the same way that Windows does, so when you call that command (a Windows function) it doesn't think you have a font and therefore returns nothing.
[Update] Confirmed. GetCharABCWidths returns a failure. You'll need to use Windows functions to load a font if you want to use GetCharABCWidths. :(
[Update] It's not even writing to the bank. Strange...
[Update] I guess (I'm not quite sure how to test) that Blitz doesn't use the fonts the same way that Windows does, so when you call that command (a Windows function) it doesn't think you have a font and therefore returns nothing.
[Update] Confirmed. GetCharABCWidths returns a failure. You'll need to use Windows functions to load a font if you want to use GetCharABCWidths. :(