Intermec 5055 Reference Guide

This function gets input from the source and places it into the received buffer. You can
use the im_get_length function after this function to get the input length.

#include "im5055.h"

IM_STATUS im_receive_input

    (IM_ORIGIN 

iAllowedSource,

    IM_UINT 

iTimeout,

    IM_ORIGIN far 

*lpReturnedSource,

    IM_UCHAR far 

*lpReturnedString);

iAllowedSource    Defines the available input source. Choose one or more of these
constants:

IM_LABEL_SELECT    Label selected.

IM_KEYBOARD_SELECT    Keypad selected.

IM_COM1_SELECT    COM1 selected.

IM_COM2_SELECT    COM2 selected.

IM_NET_SELECT    Network input.

IM_ALL_SELECT    All sources selected.

Use these variables to modify the input by performing a logical OR with the above input
sources.

IM_KEYCODE_ENABLE    Applies when the keyboard or a label is a source. Returns
each key pressed and its keycode, or returns one character of a label per call. Does not
echo to the screen. This is the functional equivalent of setting the input mode to
IM_DESKTOP.

Keyboard characters are returned as 4 bytes. The first byte is the ASCII code. The
second byte is the scan code, and the last 2 bytes are flags for modifier keys (Shift,
Control, and Alt).

iTimeout    Specifies the receive timeout period. Either enter a number from 1 to 65,534
to indicate the length of the timeout in milliseconds, or choose one of these constants:

IM_ZERO_TIMEOUT    No wait.

IM_INFINITE_TIMEOUT    Wait forever—the function will not return until the end of
message character has been received.

lpReturnedSource    Specifies the actual input source and is one of these constants:

IM_NO_SELECT    No selection made.

IM_LABEL_SELECT    Label selected.

IM_KEYBOARD_SELECT    Keypad selected.