Rick,
I'm having what I assume is a scoping problem using the native API and
can't figure out how to do what I want.
In Rexx I can do this:
stFont1 = self~getStaticControl(IDC_ST_FONT1)
say 'Static control:' stFont1 'is a DialogControl?'
stFont1~isA(.DialogControl)
and get this output:
Static control: a StaticControl is a DialogControl? 1
The next line of Rexx code is
parse value stFont1~getTextSize("My name is Mark", "Ms Shell Dlg 2",
8) with cx cy
where getTextSize() is implemented as a native API method
In the API method, I essentially need to do a OSELF
self~isA(.DialogControl), but have problems. Print out from the C++
code:
object id: a StaticControl
object is instance of DIALOGCONTROL (context class)? 0
object is instance of DIALOGCONTROL (package class)? 0
object is of type DIALOGCONTROL ? 0
(Trying to get the package class was just grasping at straws.)
In the Rexx code I can tell the static control is a DialogControl, it
seems there should be a way to tell in the native API method.
Here is a summary of the class hierarchy, which I know is the cause of
this, I just want to get around it if I can:
In 'oodplain.cls'
::class WindowBase public mixinclass object
::method getTextSize
::class PlainBaseDialog ... inherit WindowBase
In 'oodwin32.cls'
::class DialogControl ... inherit WindowBase
::class StaticControl subclass DialogControl
If I change:
stFont1~getTextSize(...)
to
self~getTextSize(...)
then in the C++ code the test IsOfType(PlainBaseDialog) returns true.
I can see, dimly, what is going on I think. PlainBaseDialog and
WindowBase are defined in the same package file. While DialogControl
is defined in package file that WindowBase knows nothing about.
But, since in the Rexx code I can do: stFont1~isA(.DialogControl) and
get the right answer, I'm thinking there is some way to do it in the
native API, if I just use the right approach.
--
Mark Miesfeld
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