Asks

// Ask the user to enter a string
//      defval - the default string value. This value
//               will appear in the dialog box.
//      hist   - history id. One of HIST_... constants
//      prompt - the prompt to display in the dialog box
// Returns: the entered string.

string ask_str(string defval, long hist, string prompt);

#define HIST_SEG    1           ///< segment names
#define HIST_CMT    2           ///< comments
#define HIST_SRCH   3           ///< search substrings
#define HIST_IDENT  4           ///< names
#define HIST_FILE   5           ///< file names
#define HIST_TYPE   6           ///< type declarations
#define HIST_CMD    7           ///< commands
#define HIST_DIR    8           ///< directory names (text version only)

// Ask the user to choose a file
//      for_saving- 0: "Open" dialog box, 1: "Save" dialog box
//      mask   - the input file mask as "*.*" or the default file name.
//      prompt - the prompt to display in the dialog box
// Returns: the selected file.

string ask_file(bool for_saving, string mask, string prompt);

// Ask the user to enter an address
//      defval - the default address value. This value
//               will appear in the dialog box.
//      prompt - the prompt to display in the dialog box
// Returns: the entered address or BADADDR.

long ask_addr(long defval, string prompt);

// Ask the user to enter a number
//      defval - the default value. This value
//               will appear in the dialog box.
//      prompt - the prompt to display in the dialog box
// Returns: the entered number or -1.

long ask_long(long defval, string prompt);

// Ask the user to enter a segment value
//      defval - the default value. This value
//               will appear in the dialog box.
//      prompt - the prompt to display in the dialog box
// Returns: the entered segment selector or BADSEL.

long ask_seg(long defval, string prompt);

// Ask the user a question and let him answer Yes/No/Cancel
//      defval - the default answer. This answer will be selected if the user
//               presses Enter.
//      prompt - the prompt to display in the dialog box
// Returns: -1:cancel, 0-no, 1-ok

long ask_yn(long defval, string prompt);