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Multiscreen program
#4
Okay, now that Biden is done ****ing in his big boy pants, here is what I put together a few years back involving two screen communication over tcp/ip...

Code: (Select All)
_SCREENMOVE 0, 0
title$ = "Messenger_Host"
_TITLE (title$)
_DELAY .1

_SCREENMOVE 0, 0 ' Set up this host window to the left of your desktop.
WIDTH 60, 25
PALETTE 0, 8
COLOR 7, 0
CLS
IF NOT _FILEEXISTS("messenger_client_lm.exe") THEN PRINT "Cannot find file: messenger_client_LM.exe. Ending...": END
DIM host_msg AS STRING, client_msg AS STRING
DO
    IF initiate = 0 THEN ' This only needs to be performed once, to open the client window.
        DO UNTIL x ' Stay in loop until window determines if it is the host or client window.
            x = _OPENCLIENT("TCP/IP:1234:localhost") ' Used to establish a TCP/IP routine.
            IF x = 0 THEN
                x = _OPENHOST("TCP/IP:1234") ' Note the host and clinet must have the same 1234 I.D. number.
                a$ = "Opening as host." ' x channel is now open and this window becomes the host.
            ELSE
                a$ = "Opening as client." ' Should not go here for this demo.
            END IF
            PRINT a$
        LOOP
        SHELL _HIDE _DONTWAIT "START messenger_client_lm.exe" ' Open the client window.
        initiate = -1 ' Switches this block statement off for all subsequent loops.
    END IF

    IF z = 0 THEN ' Initiates an open channel number when zero.
        DO
            z = _OPENCONNECTION(x) ' Checks if host is available to transfer data.
        LOOP UNTIL z
        PRINT "Connection established."
        _DELAY 1
        LOCATE 2: PRINT SPACE$(_WIDTH * 2) ' Remove previous text.
        LOCATE 3, 1
        GOSUB focus
    END IF

    ' Okay, time to input something on the host that will be communicated to the client.
    COLOR 7: LINE INPUT "Message to client: "; host_msg: PRINT

    PUT #z, , host_msg ' Input is now entered into TCP/IP routine.
    IF host_msg = "" THEN SYSTEM

    DO
        GET #z, , client_msg
    LOOP UNTIL LEN(client_msg) ' Exits loop when a return msg is received.

    COLOR 6: PRINT "Message from client: "; client_msg: PRINT

    host_msg = "": PUT #z, , host_msg$ ' Now put our client value back into the routine. Failure to do so would result in the client not waiting in the GET #x DO/LOOP.
    _KEYCLEAR ' Prevents typing before ready.

    GOSUB focus
LOOP

focus:
_SCREENCLICK _SCREENX + 60, _SCREENY + 10
RETURN

Code: (Select All)
title$ = "Messenger_Client"
_TITLE (title$)
_DELAY .1

DIM host_msg AS STRING, client_msg AS STRING
_SCREENMOVE 600, 0 ' Set up this client window next to your host window.
WIDTH 50, 25
PALETTE 0, 8
COLOR 7, 0
CLS
x = _OPENCLIENT("TCP/IP:1234:localhost") ' Used to establish a TCP/IP routine.
PRINT "Opened as client.": PRINT
DO UNTIL x = 0 ' Prevents running if this app is opened without using host.
    DO
        _LIMIT 30
        GET #x, , host_msg ' Waits until it receives message sent from the host.
    LOOP UNTIL LEN(host_msg)

    COLOR 6: PRINT "Message from host: "; host_msg
    PRINT
    _KEYCLEAR ' Prevents typing before ready.

    GOSUB focus

    COLOR 7: LINE INPUT "Message to host: "; client_msg: PRINT
    IF client_msg = "" THEN SYSTEM

    PUT #x, , client_msg
LOOP
END

focus:
_SCREENCLICK _SCREENX + 60, _SCREENY + 10
RETURN


To get it to work, compile the second one as: Messenger_Client_LM.exe

Next, SAVE and RUN the first one as: Messenger_Host_LM.exe

Type a message in the host and press Enter to send it. It will appear in the client, which will then prompt you to make a reply.

Note: It uses _SCREENCLICK for focus, so don't move the windows. If anyone knows a better API focus method, that actually works in practice, that would be nice. 

Pete
Reply


Messages In This Thread
Multiscreen program - by SMcNeill - 07-11-2024, 05:55 PM
RE: Multiscreen program - by NakedApe - 07-11-2024, 07:26 PM
RE: Multiscreen program - by SMcNeill - 07-11-2024, 10:46 PM
RE: Multiscreen program - by Pete - 07-12-2024, 12:45 AM
RE: Multiscreen program - by SMcNeill - 07-12-2024, 07:12 AM
RE: Multiscreen program - by TempodiBasic - 07-14-2024, 07:15 AM



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