4.4 Obtaining and Changing Window Properties

You can attach a property list to every window. Each property has a name, a type, and a value (see "Properties and Atoms"). The value is an array of 8-bit, 16-bit, or 32-bit quantities, whose interpretation is left to the clients. The type char is used to represent 8-bit quantities, the type short is used to represent 16-bit quantities, and the type long is used to represent 32-bit quantities.

Xlib provides functions that you can use to obtain, change, update, or interchange window properties. In addition, Xlib provides other utility functions for inter-client communication (see "Inter-Client Communication Functions").

To obtain the type, format, and value of a property of a given window, use XGetWindowProperty().

To obtain a given window's property list, use XListProperties().

To change a property of a given window, use XChangeProperty().

To rotate a window's property list, use XRotateWindowProperties().

To delete a property on a given window, use XDeleteProperty().

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Christophe Tronche, ch@tronche.com