Download PDF by Mr. Brian J. Keller: A Practical Guide To X Window Programming: Developing

By Mr. Brian J. Keller

ISBN-10: 0849374065

ISBN-13: 9780849374067

A pragmatic consultant to X Window Programming is a easy consultant that takes readers step-by-step via constructing functions utilizing X-Windows™. The e-book covers the Xt Intrinsics component of the X-Window procedure intimately and discusses the MIT Athena and OSF/Motif Widget units which are utilized in a few of the examples. themes lined comprise C programming basics, textual content dealing with utilizing X, fonts, occasion dealing with in Xt, extending the Widget units (building on box Editor Widget), designing and developing an program, development menus, printing support, OSF/Motif (including the window arranger) and interclient conversation. 3 large appendices are incorporated: Widgets, Classing, and Exported services; fast Xt Reference advisor (X11R4); and speedy consultant to OSF/Motif Widgets. Any functions clothier drawn to constructing purposes with Xt will locate this e-book a important and enlightening source.

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Extra info for A Practical Guide To X Window Programming: Developing Applications with the XT Intrinsics and OSF/Motif

Example text

However, with X11R4, the folks at MIT incorporated a “shapes” extension, so windows need not be rectangular. The upper-left corner of an X window is considered to be its origin (see Figure 2-3). The xaxis increases as you go left while the y-axis increases as you go down. All coordinates in X are relative, that is, from the window’s point of view all things start at 0,0. If a window is created and is offset from the root window at 100,100 the root window’s perspective of the child’s origin is 100,100 while the child views it as 0,0.

The “palette” is a colormap. Think of a colormap as an array of colors (kind of like a look-up table). Some interesting things happen with colormaps and window managers. Clients can install their own colormaps that may be different than other clients’, so when the client has the focus, the window manager installs the colormap. But, since it differs from the one being used by other clients, and the colormap indices do not change when new colormaps are installed, the other clients might not appear in their true colors.

Html (1 of 4) [13/12/02 18:08:43] A Practical Guide to X Window Programming: Developing Applications with ... Intrinsics and OSF/Motif:Xt Basics: An Introduction to Xt-based Widgets XtInitProc XtArgsProc XtRealizeProc XtActionList Cardinal XtResourceList Cardinal XrmClass Boolean Boolean Boolean Boolean XtWidgetProc XtWidgetProc XtExposeProc XtSetValuesFunc XtArgsFunc XtAlmostProc XtArgsProc XtWidgetProc XtVersionType _XtOffsetList String XtGeometryHandler XtStringProc caddr_t } CoreClassPart; initialize; initialize_hook; realize; actions; num_actions; resources; num_resources; xrm_class; compress_motion; compress_exposure; /* XtEnum in X11R4 */ compress_enterleave; visible_interest; destroy; resize; expose; set_values; set_values_hook; set_values_almost; get_values_hook; accept_focus; /* XtAcceptFocusProc */ version; *callback_private; /* XtPointer */ tm_table; query_geometry; display_accelerator; extension; /* XtPointer in X11R4 */ The second part of the widget is its instance record.

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A Practical Guide To X Window Programming: Developing Applications with the XT Intrinsics and OSF/Motif by Mr. Brian J. Keller


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