XSetSelectionOwner



XSetSelectionOwner

NAME
SYNTAX
ARGUMENTS
DESCRIPTION
DIAGNOSTICS
SEE ALSO

NAME

XSetSelectionOwner, XGetSelectionOwner, XConvertSelection − manipulate window selection

SYNTAX

int XSetSelectionOwner(Display *display, Atom selection, Window owner, Time time);

Window XGetSelectionOwner(Display *display, Atom selection);

int XConvertSelection(Display *display, Atom selection, Atom target, Atom property, Window requestor, Time time);

ARGUMENTS

display

Specifies the connection to the X server.

owner

Specifies the owner of the specified selection atom. You can pass a window or None.

property

Specifies the property name. You also can pass None.

requestor

Specifies the requestor.

selection

Specifies the selection atom.

target

Specifies the target atom.

time

Specifies the time. You can pass either a timestamp or CurrentTime.

DESCRIPTION

The XSetSelectionOwner function changes the owner and last-change time for the specified selection and has no effect if the specified time is earlier than the current last-change time of the specified selection or is later than the current X server time. Otherwise, the last-change time is set to the specified time, with CurrentTime replaced by the current server time. If the owner window is specified as None, then the owner of the selection becomes None (that is, no owner). Otherwise, the owner of the selection becomes the client executing the request.

If the new owner (whether a client or None) is not the same as the current owner of the selection and the current owner is not None, the current owner is sent a SelectionClear event. If the client that is the owner of a selection is later terminated (that is, its connection is closed) or if the owner window it has specified in the request is later destroyed, the owner of the selection automatically reverts to None, but the last-change time is not affected. The selection atom is uninterpreted by the X server. XGetSelectionOwner returns the owner window, which is reported in SelectionRequest and SelectionClear events. Selections are global to the X server.

XSetSelectionOwner can generate BadAtom and BadWindow errors.

The XGetSelectionOwner function returns the window ID associated with the window that currently owns the specified selection. If no selection was specified, the function returns the constant None. If None is returned, there is no owner for the selection.

XGetSelectionOwner can generate a BadAtom error.

XConvertSelection requests that the specified selection be converted to the specified target type:

If the specified selection has an owner, the X server sends a SelectionRequest event to that owner.

If no owner for the specified selection exists, the X server generates a SelectionNotify event to the requestor with property None.

The arguments are passed on unchanged in either of the events. There are two predefined selection atoms: PRIMARY and SECONDARY.

XConvertSelection can generate BadAtom and BadWindow errors.

DIAGNOSTICS

BadAtom

A value for an Atom argument does not name a defined Atom.

BadWindow

A value for a Window argument does not name a defined Window.

SEE ALSO

Xlib − C Language X Interface






Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.





Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.


Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.





Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.


Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.





Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.


Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.