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RGtk2 (version 2.20.31)
gtkButtonSetUseUnderline: gtkButtonSetUseUnderline
Description
If true, an underline in the text of the button label indicates the next character should be used for the mnemonic accelerator key.
Usage
gtkButtonSetUseUnderline(object, use.underline)
Arguments
object
a
GtkButton
use.underline
TRUE
if underlines in the text indicate mnemonics