[PHP-DEV] RE: PHP, Windows and COM.

[Richard Quadling]

Genius!

Thank you very much.

Can this example be added to the PHP Manual? All the online examples I've
seen relate to functions which you can pass the first few params and no
more. In this case having to pass the first and last param is not mentioned.

This simple example demonstrates the use of php's VARIANT() type and now to
call functions that use it.

Thank you VERY much!!

Regards,

Richard.

-Original Message-
From: Harald Radi [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, February 26, 2003 10:41 AM
To: 'Richard Quadling'
Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: PHP, Windows and COM.


hi richard

 The problem with some of the VBA functions is that the first and last 
 parameter need to be set and the ones in the middle have no meaning 
 and cannot be present. This can only be achieved by using named
 parameters. The
 GoTo method, as a function, in VBA would be ...

sooner or later everything ends up in a native c(++) function call and there
are no such things as named parameters. therefore nonpresent parameters will
be assigned a default value (iirc NULL if no explicit default value is
specified.)

so try calling

GoTo(wdGoToBookmark, NULL, NULL, BookmarkName);

or, if it doesn't work

$empty = new VARIANT();
GoTo(wdGoToBookmark, $empty, $empty, BookmarkName);

the difference is, that there exists two different variant types with nearly
the same meaning, VT_NULL and VT_EMPTY. PHP's NULL will be marshalled to
VT_NULL, VT_EMPTY has to be created by explicitly creating an empty variant
container in php.

ad. your previous question:
there are two other ways of importing a type library, you can either
com_load_typelib(Word.Application) which will search for the typelib
assigned to that component or you can enable com.autoregister_typelib in
your php.ini which will cause php to load the typelib for every component
you instanciate.

harald

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[PHP-DEV] RE: PHP, Windows and COM.

[Richard Quadling]

Hi Harald.

The problem with some of the VBA functions is that the first and last
parameter need to be set and the ones in the middle have no meaning and
cannot be present. This can only be achieved by using named parameters. The
GoTo method, as a function, in VBA would be ...

GoTo(wdGoToBookmark,,,BookmarkName)

OLEView shows the GoTo method as ...

[id(0x00ad), helpcontext(0x095e00ad)]
HRESULT _stdcall GoTo(
[in] VARIANT* What, 
[in, optional] VARIANT* Which, 
[in, optional] VARIANT* Count, 
[in, optional] VARIANT* Name, 
[out, retval, optional] Range** prop);


I only want to supply What and Name, Which and Count are not valid for
bookmarks. Is there a true NULL type I can send?

Richard.

P.S. Thanks for the OLEView pointer.

-Original Message-
From: Harald Radi [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, February 25, 2003 5:14 PM
To: 'Richard Quadling'; [EMAIL PROTECTED]; [EMAIL PROTECTED];
[EMAIL PROTECTED]; [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: PHP, Windows and COM.



hi richard,

currently there is no way of calling a function with named arguments. your
proposed array syntax wouldn't allow for passing arrays. on the other hand
variant arrays can only be indexed arrays and not hash arrays so i could
treat all string indices as named parameters. this would be a possibility
though i still find it very confusing. if anybody has a good suggestion that
is feasable on top of the engine (meaning without modifying the
scanner/parser) don't hesitate to post it to the list.

back to your actual problem:
you still can call all functions without naming parameters, though you have
to specify the full list of parameters up to at least the last optional
parameter that should not be set to its default value (uuh, does this make
sence ? actually its exactly the same as calling a php function with
optional parameters). you can look up the default values for optional
parameters in the components typelibrary which is browsable using the
oleview tool. 

i hope that helps.

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