CheckButton.with_mnemonic
Description:
[ CCode ( has_construct_function = false ,  type = "GtkWidget*" ) ]
public CheckButton.with_mnemonic (string? label)
  public CheckButton.with_mnemonic (string? label)
Creates a new `GtkCheckButton` with the given text and a mnemonic.
Parameters:
| label | The text of the button, with an underscore in front of the mnemonic character | 
Returns:
| a new `GtkCheckButton` |