Connecting to a COM server
To access a method associated with a component in the COM server,
the PowerBuilder client connects to the component using its programmatic
identifier (ProgID) or its class identifier (CLSID).
You can use a tool such as OLEVIEW or the OLE tab in the
PowerBuilder Browser to view the Program ID or CLSID and methods of
registered COM objects.
To establish a connection to the COM server, you need to execute the
PowerScript statements required to perform these operations:
-
Declare a variable of type OLEObject and use the
Create statement to instantiate it. -
Connect to the object using its Program ID or CLSID.
-
Check that the connection was established.
Example
The following script instantiates the EmpObj OLEObject object,
connects to the COM object PBcom.Employee, and checks for errors:
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OLEObject EmpObj Integer li_rc EmpObj = CREATE OLEObject li_rc = EmpObj.ConnectToNewObject("PBcom.employee") IF li_rc < 0 THEN DESTROY EmpObj MessageBox("Connecting to COM Object Failed", & "Error: " + String(li_rc)) Return END IF |