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Window Properties

A window property is any data assigned to a window. A window property is usually a handle of the window-specific data, but it may be any value. Each window property is identified by a string name.

In This Section

NameDescription
About Window Properties

Discusses window properties.

Using Window Properties

Explains how to perform the following tasks associated with window properties.

Window Property Reference

Contains the API reference.

 

Window Property Functions

NameDescription
EnumProps

Enumerates all entries in the property list of a window by passing them, one by one, to the specified callback function. EnumProps continues until the last entry is enumerated or the callback function returnsFALSE.

EnumPropsEx

Enumerates all entries in the property list of a window by passing them, one by one, to the specified callback function. EnumPropsEx continues until the last entry is enumerated or the callback function returns FALSE.

GetProp

Retrieves a data handle from the property list of the specified window. The character string identifies the handle to be retrieved. The string and handle must have been added to the property list by a previous call to the SetProp function.

PropEnumProc

An application-defined callback function used with the EnumProps function. The function receives property entries from a window's property list. The PROPENUMPROC type defines a pointer to this callback function. PropEnumProc is a placeholder for the application-defined function name.

PropEnumProcEx

An application-defined callback function used with the EnumPropsEx function. The function receives property entries from a window's property list. The PROPENUMPROCEX type defines a pointer to this callback function. PropEnumProcEx is a placeholder for the application-defined function name.

RemoveProp

Removes an entry from the property list of the specified window. The specified character string identifies the entry to be removed.

SetProp

Adds a new entry or changes an existing entry in the property list of the specified window. The function adds a new entry to the list if the specified character string does not exist already in the list. The new entry contains the string and the handle. Otherwise, the function replaces the string's current handle with the specified handle.

 

 

 

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