The IFiltTst.ini File

The IFiltTst.ini File

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An IFilter interface is initialized by calling the IFilter::Init method. The Init method takes four parameters, grfFlags, cAttributes, aAttributes and pdwFlags. The user of the ifilttst.exe program of the IFilter Test Suite can specify the values for these parameters in a file called ifilttst.ini. The next section, Sample ifilttst.ini File, shows a sample file.

The file is organized in sections, with the section name enclosed in square brackets. In the example, the sections are named Test1, Test2, and so forth. All section names must be unique. The test reads the values from the first section and initializes the filter with those values. Then it runs all its tests using this filter configuration. It then releases the filter and reinitializes it, using parameters from the next section. It repeats the process until all configurations are tested.

The following table gives the parameters for the IFilter::Init method. Each section contains a complete description of the parameters.

EntryValue of entry
FlagsThe names of the IFILTER_INIT flags that are to be joined by the OR operator to form the grfFlags parameter. They must be all uppercase, and they must all be on the same line.
cAttributesA decimal integer representing the value of the cAttributes parameter.
aAttributesThe name of this entry must start with "aAttributes" and must be different from the other aAttributes entries within the section. Legal names for the aAttributes entry are: aAttributes, aAttributes1, aAttributes2, and so forth. The first token must be a globally unique identifier (GUID). The GUID must be formatted exactly as shown in the section [Test3]. The second token can be either a property identifier (propid), consisting of a number in hexadecimal notation, or a pointer to a wide character string (lpwstr). A lpwstr can be specified by enclosing the string in double quotes (see section [Test6]).


If the Flags and cAttributes entries are not specified, they default to zero. If you set cAttributes equal to 2, you generally specify two aAttributes names. In section [Test5], cAttributes is 1, but no aAttributes have been specified. The test then calls the IFilter::Init method with cAttributes equal to 1, and aAttributes equal to NULL. This is a useful test case, since it is likely to cause an access violation in the IFilter::Init method.

There is no entry for the pdwFlags parameter since this parameter is used solely to return a value to the caller; it does not need to have any special value prior to the call to the IFilter::Init method.

If ifilttst.exe cannot find a file named ifilttst.ini in the working directory, it uses a default configuration to initialize the filter object. Below is the default configuration.

cAttributes = 0



Build date: 9/10/2012

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