Using IsComObjectCreated

You can test to see if a COM object exists by getting the value of IsComObjectCreated from its DataFlex wrapper object. This function returns True if the COM object has been created, indicating that it is safe to access its interface.

The following example from the Simple Automation Controller sample demonstrates the use of IsComObjectCreated:

Object oText_Btn is a Button
    Set Location to 10 10

    Procedure OnClick
        // Get the text from the COM Automation Server and display it.
        String sValue
        Boolean bIsComObjectCreated

        // Test to see if we are already connected. If we are connected,
        // then the IsComObjectCreated returns True.
        Get IsComObjectCreated of oAutomationTest to bIsComObjectCreated

        If (bIsComObjectCreated) Begin
            Get ComEditText of oAutomationTest to sValue
            Set Value of oText_frm to sValue
        End
    End_Procedure // OnClick
End_Object

See Also

• Programming with COM – General Topics