DdeExecuteΒΆ

DdeExecute executes a server macro.

bool = DdeExecute(hConv, ssCommand)
bool = DdeExecute(hConv, ssCommand, rsTimeout)

Return Value

If the function succeeds, the return value is TRUE (1); otherwise it is FALSE (0).

Parameters

hConv

hConv is the channel number (handle) which is used with other UniPlot DDE functions.

ssCommand

ssCommand is a command string, e.g. DdeExecute(hConv, "[OPEN(\"c:/map.dif/")]").

rsTimeout

Specifies the maximum length of time, in milliseconds, that UniPlot will wait for a response from the server application in a synchronous transaction. This parameter should be 0xFFFFFFFF for asynchronous transactions. The default value is 5000.

Example

In the following example Excel is used to convert a file. A DIF file (Data Interchange Format) is converted and loaded into a UniPlot Editor.

// HKEY_CURRENT_USER\Software\Classes\CLSID\{F0C8D974-51B6-11D0-BE90-008048AA0191}\LocalServer32
def FindUniPlot()
{
    RegConnect("HKEY_CURRENT_USER")
    b = RegOpen("Software\\Classes\\UniPlot.Application\\CLSID");
    s = RegGetValue("");
    RegOpen("Software\\Classes\\CLSID\\" + s + "\\LocalServer32")
    return RegGetValue("");
}


def FindApp(ssApp)
{
    RegConnect("HKEY_LOCAL_MACHINE")
    b = RegOpen("Software\\Classes\\" + ssApp + "\\CLSID");
    s = RegGetValue("");
    RegOpen("Software\\Classes\\CLSID\\" + s + "\\LocalServer32")
    return RegGetValue("");
}

def test_DdeExecute()
{
    s = FindApp("Excel.Application");
    if (s == "") {
        MessageBoxError("Excel not found");
        return;
    }
    system(s, SW_HIDE, 0);
    hConv = DdeInitiate("Excel", "System");
    DdeExecute(hConv, "[OPEN(\"" + GetRootDirectory() + "samples\\map-data.xls\")]")
    hconvTab = DdeInitiate("Excel", "map-data.xls");
    ssData = DdeRequest(hconvTab, "z1s1:z16384s255");
    ssData = strfindreplace(ssData, ",", ".");
    DdeExecute(hConv, "[CLOSE()]");
    DdeExecute(hConv, "[QUIT()]");
    DdeTerminateAll();

    hedit = EdCreate();
    EdSetText(hedit, ssData);
}

test_DdeExecute();

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