DdeCallback_Poke

DdeCallback_Poke is called by the client to send data to UniPlot.

bool = DdeCallback_Poke(hConv, ssItem, ssTopic, ssData)

Return Value

bool is TRUE (1) if the function call was successful, otherwise FALSE (0).

Parameters

hConv

hConv is the channel number.

ssItem

ssItem is the item name.

ssTopic

ssTopic is the topic name.

ssData

ssData is the data send to UniPlot.

Example

The following Word-Basic program sends data to UniScript using the function DdeCallback_Poke:

Sub Main
    chan = DDEInitiate("UniPlotSL", "xydata")
    DDEPoke(chan, "xydata", "1,5,3,4,8,12")
    DDETerminate(chan)
End Sub

The Word-Basic command DDEPoke(chan, "xydata", "1,5,3,4,8,12"), should create a diagram with a x/y dataset in UniPlot. To do so, we have to make the following changes to the DdeCallback_Poke function in the UniPlot/script/obj_dde.ic file:

def DdeCallback_Poke(hConv, ssItem, ssTopic, ssData)
{
    printf("---Poke---\n";
    printf("Conversation-No.: %x, Item: %s, Topic: %s, Data: %s\n\n", ..
        hConv, ssItem, ssTopic, ssData);
    ss = strtok(ssData, ",")
    rvData = strtod(ss)
    plot(1:len(rvData), rvData);
    return TRUE;
}

See also

Overview DDE, DdeCallback_Connect, DdeCallback_ConnectConfirm, DdeCallback_Disconnect, DdeCallback_Request, DdeCallback_Execute

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