URLMON Functions

The table on this page is this study’s master list of functions that appear in the export directory of any known 32-bit build of URLMON. It gives for each function just brief summaries of the applicable URLMON versions and of the function’s status with respect to Microsoft’s documentation. Additional explanatory notes follow the table.

Names

Function names are reproduced from the export directory of the URLMON.DLL executable, wherever possible. For functions that are not exported by name, i.e., are exported only by ordinal, from any known URLMON version, names are inferred from symbol files that Microsoft supplies for customer support. The ordinal is given in brackets immediately after the function’s name.

Versions

The URLMON versions shown for each function are inferred from a study of known releases, making reasonable assumptions about likely continuity, especially to suppose that a function will exist in future versions or that a function exists in all released builds of a version if no counter-example is yet known.

This study refers to applicable products and service packs in ascending order of versions and build numbers. Be aware that this is not chronological order.

Documentation Status

Except where otherwise stated, the reference version for Microsoft’s documentation is the January 2007 edition of the Windows Vista Software Development Kit (as distributed by Microsoft on MSDN Disc 3667). There is no one section for URLMON functions. That a function is not marked above as documented (or is marked on other pages as undocumented) does not mean for certain that Microsoft does not document it, just that I haven’t yet found where.

A few functions are not documented specifically as exports from URLMON but fit some general cases. These are indicated by enclosing the documentation status in brackets.

Some functions are shown as documented but with PROPSYS in brackets. Strictly speaking, these are undocumented as URLMON exports. Each has a contemporaneous implementation as an export from the Windows Shell module PROPSYS.DLL and it is this implementation, not the one in URLMON, that Microsoft documents.