GetNativePointer
PowerScript function
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
|
1 |
olename.GetNativePointer ( pointer ) |
|
Argument |
Description |
|---|---|
|
olename |
The name of the OLE control containing the object for |
|
pointer |
A UnsignedLong variable in which you want to store the |
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:
|
1 2 3 4 5 6 7 8 |
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