Sets the currently-selected font. Note that the fontsel needs to know the screen in which it will appear for this to work; this can be guaranteed by simply making sure that the fontsel is inserted in a toplevel window before you call this function.
a font name like "Helvetica 12" or "Times Bold 18"
TRUE if the font could be set successfully; FALSE if no such font exists or if the fontsel doesn't belong to a particular screen yet.
See Implementation
Sets the currently-selected font. Note that the fontsel needs to know the screen in which it will appear for this to work; this can be guaranteed by simply making sure that the fontsel is inserted in a toplevel window before you call this function.