Description
Gets a pointer to the OLE object associated with the OLE control. The pointer lets you call OLE functions in an external DLL for the object.
Applies to
OLE controls and OLE custom controls
Syntax
olename.GetNativePointer ( pointer )
|
Argument |
Description |
|---|---|
|
olename |
The name of the OLE control containing the object for which you want the native pointer. |
|
pointer |
A UnsignedLong variable in which you want to store the pointer. If GetNativePointer cannot get a valid pointer, pointer is set to 0. |
Return value
Integer.
Returns 0 if it succeeds and -1 if an error occurs.
Usage
Pointer is a pointer to OLE's IUnknown interface. You can use it with the OLE QueryInterface function to get other interface pointers.
When you call GetNativePointer, PowerBuilder calls OLE's AddRef function, which locks the pointer. You must release the pointer in your DLL function or in a PowerBuilder script with the ReleaseNativePointer function.
Only for external DLL calls
This function is only useful for external DLL calls. It is not related to the SetAutomationPointer function.
Examples
This example gets a pointer for the OLECustomControl ocx_spell for making external function calls for OLE automation:
UnsignedLong lul_oleptr integer li_rtn li_rtn = ocx_spell.GetNativePointer(lul_oleptr) IF li_rtn = 0 THEN ... // Call external functions for automation ocx_spell.ReleaseNativePointer(lul_oleptr) END IF
See also
