Adds a new item with text label.
An id can optionally be provided, as well as an accelerator (accel). If no id is provided, one will be created from the index. If no accel is provided then the default 0 will be assigned to it. See getItemAccelerator for more info on accelerators.
Adds a new item with text label. An id can optionally be provided, as well as an accelerator (accel). If no id is provided, one will be created from the index. If no accel is provided then the default 0 will be assigned to it. See getItemAccelerator for more info on accelerators.