| Value | Meaning |
|---|---|
| NONE0 | no underline should be drawn |
| SINGLE1 | a single underline should be drawn |
| DOUBLE2 | a double underline should be drawn |
| LOW3 | a single underline should be drawn at a position beneath the ink extents of the text being underlined. This should be used only for underlining single characters, such as for keyboard accelerators. %PANGO_UNDERLINE_SINGLE should be used for extended portions of text. |
| ERROR4 | an underline indicating an error should be drawn below. The exact style of rendering is up to the PangoRenderer in use, but typical styles include wavy or dotted lines. This underline is typically used to indicate an error such as a possible mispelling; in some cases a contrasting color may automatically be used. This type of underlining is available since Pango 1.4. |
| SINGLE_LINE5 | Like @PANGO_UNDERLINE_SINGLE, but drawn continuously across multiple runs. This type of underlining is available since Pango 1.46. |
| DOUBLE_LINE6 | Like @PANGO_UNDERLINE_DOUBLE, but drawn continuously across multiple runs. This type of underlining is available since Pango 1.46. |
| ERROR_LINE7 | Like @PANGO_UNDERLINE_ERROR, but drawn continuously across multiple runs. This type of underlining is available since Pango 1.46. |
The PangoUnderline enumeration is used to specify whether text should be underlined, and if so, the type of underlining.