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Bug #6447 Windows COM invalid warning message
Submitted: 2000-08-30 16:50 UTC Modified: 2000-10-09 07:49 UTC
From: Howard dot Cohodas at dkt dot com Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 4.0.2 OS: NT4 SP6a
Private report: No CVE-ID: None
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From: Howard dot Cohodas at dkt dot com
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 [2000-08-30 16:50 UTC] Howard dot Cohodas at dkt dot com 
Configuration...
php-4.0.2
Server API: ISAPI 
WinNT4 SP6a
HTTP Server: WebSitePro/2.5.4
mySQL: 3.23.22-beta
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

<?php 
  $id = new com("otf_GIF32_COM.GIF_Encode"); 
  $id->Company_Name = "Design Knowledge Technologies Inc."; 
?>

When a property is write-only the following error message results.

Warning: PropPut() failed: Invalid number of parameters.

The PropPut actually succeeded.  Information derived from the write-only property was correct.

I recoded the COM and adding a read capability.  The warning message is gone.

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 [2000-10-07 13:25 UTC] Howard dot Cohodas at dkt dot com 
Proposed fix provided by Serge Golovin [res@digt.com].  This problem is a show stopper.


diff -u COM.c COM.c.new
--- COM.c	Wed Sep 27 13:06:00 2000
+++ COM.c.new	Wed Sep 27 12:24:57 2000
@@ -667,7 +667,6 @@
 	HRESULT hr;
 	OLECHAR *propname;
 	char *error_message;
-	VARIANTARG var_result;
 	DISPPARAMS dispparams;
 	VARIANTARG new_value;
 	DISPID mydispid = DISPID_PROPERTYPUT;
@@ -698,13 +697,6 @@
 									LOCALE_SYSTEM_DEFAULT, DISPATCH_PROPERTYPUT,
 									&dispparams, NULL, NULL, 0);

-	dispparams.cArgs = 0;
-	dispparams.cNamedArgs = 0;
-
-	hr = i_dispatch->lpVtbl->Invoke(i_dispatch, dispid, &IID_NULL,
-									LOCALE_SYSTEM_DEFAULT, DISPATCH_PROPERTYGET,
-									&dispparams, &var_result, NULL, 0);
-
 	if (FAILED(hr)) {
 		error_message = php_COM_error_message(hr);
 		php_error(E_WARNING,"PropPut() failed:  %s\n", error_message);
@@ -713,7 +705,7 @@
 		RETURN_FALSE;
 	}

-	php_variant_to_pval(&var_result, return_value, 0);
+	php_variant_to_pval(&new_value, return_value, 0);

 	efree(propname);
 }
 [2000-10-09 07:49 UTC] zeev@php.net 
Fixed in the CVS, thanks
 
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