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Diffstat (limited to 'devel.but')
| -rw-r--r-- | devel.but | 18 |
1 files changed, 18 insertions, 0 deletions
@@ -3096,6 +3096,24 @@ The front end can expect its drawing API and/or \cw{activate_timer()} to be called from within a call to this function. +\H{midend-can-undo} \cw{midend_can_undo()} + +\c int midend_can_undo(midend *me); + +Returns \cw{TRUE} if the midend is currently in a state where the undo +operation is meaningful (i.e. at least one position exists on the undo +chain before the present one). Front ends may wish to use this to +visually activate and deactivate an undo button. + +\H{midend-can-redo} \cw{midend_can_redo()} + +\c int midend_can_redo(midend *me); + +Returns \cw{TRUE} if the midend is currently in a state where the redo +operation is meaningful (i.e. at least one position exists on the redo +chain after the present one). Front ends may wish to use this to +visually activate and deactivate a redo button. + \H{midend-serialise} \cw{midend_serialise()} \c void midend_serialise(midend *me, |