Linux Manuals session 3

XSetScreenSaver, XForceScreenSaver, XActivateScreenSaver, XResetScreenSaver, XGetScreenSaver – manipulate the screen saver Syntaxint XSetScreenSaver(Display *display, int timeout, int interval, int prefer_blanking, int allow_exposures); int XForceScreenSaver(Display *display, int mode); int XActivateScreenSaver(Display *display); int XResetScreenSaver(Display *display); int XGetScreenSaver(Display *display, int *timeout_return, int *interval_return, int *prefer_blanking_return, int *allow_exposures_return);Argumentsallow_exposures Specifies the screen save control values. You can pass DontAllowExposures, AllowExposures, or…

XCreateRegion, XSetRegion, XDestroyRegion – create or destroy regions SyntaxRegion XCreateRegion(void); int XSetRegion(Display *display, GC gc, Region r); int XDestroyRegion(Region r);Argumentsdisplay Specifies the connection to the X server. gc Specifies the GC. r Specifies the region.DescriptionThe XCreateRegion function creates a new empty region. The XSetRegion function sets the clip-mask in the GC to the specified region….

XAllocStandardColormap, XSetRGBColormaps, XGetRGBColormaps, XStandardColormap – allocate, set, or read a standard colormap structure SyntaxXStandardColormap *XAllocStandardColormap(void); void XSetRGBColormaps(Display *display, Window w, XStandardColormap *std_colormap, int count, Atom property); Status XGetRGBColormaps(Display *display, Window w, XStandardColormap **std_colormap_return, int *count_return, Atom property);Argumentsdisplay Specifies the connection to the X server. count Specifies the number of colormaps. count_return Returns the number of…

XSetPointerMapping, XGetPointerMapping – manipulate pointer settings Syntaxint XSetPointerMapping(Display *display, unsigned char map[], int nmap); int XGetPointerMapping(Display *display, unsigned char map_return[], int nmap);Argumentsdisplay Specifies the connection to the X server. map Specifies the mapping list. map_return Returns the mapping list. nmap Specifies the number of items in the mapping list.DescriptionThe XSetPointerMapping function sets the mapping of…

XSetState, XSetFunction, XSetPlaneMask, XSetForeground, XSetBackground – GC convenience routines Syntaxint XSetState(Display *display, GC gc, unsigned long foreground, unsigned int background, int function, unsigned long plane_mask); int XSetFunction(Display *display, GC gc, int function); int XSetPlaneMask(Display *display, GC gc, unsigned long plane_mask); int XSetForeground(Display *display, GC gc, unsigned long foreground); int XSetBackground(Display *display, GC gc, unsigned long…

XOpenOM, XCloseOM, XSetOMValues, XGetOMValues, XDisplayOfOM, XLocaleOfOM – open output methods SyntaxXOM XOpenOM(Display *display, XrmDatabase db, char *res_name, char *res_class); Status XCloseOM(XOM om); char *XSetOMValues(XOM om); char *XGetOMValues(XOM om); Display *XDisplayOfOM(XOM om); char *XLocaleOfOM(XOM om);Argumentsdisplay Specifies the connection to the X server. db Specifies a pointer to the resource database. res_name Specifies the full resource name…

XCreateOC, XDestroyOC, XSetOCValues, XGetOCValues, XOMOfOC – create output contexts SyntaxXOC XCreateOC(XOM om); void XDestroyOC(XOC oc); char * XSetOCValues(XOC oc, …); char * XGetOCValues(XOC oc, …); XOM XOMOfOC(XOC oc);Argumentsoc Specifies the output context. om Specifies the output method. … Specifies the variable length argument list to set or get XOC values.DescriptionThe XCreateOC function creates an output…

XChangeKeyboardMapping, XGetKeyboardMapping, XDisplayKeycodes, XSetModifierMapping, XGetModifierMapping, XNewModifiermap, XInsertModifiermapEntry, XDeleteModifiermapEntry, XFreeModifiermap, XModifierKeymap – manipulate keyboard encoding and keyboard encoding structure Syntaxint XChangeKeyboardMapping(Display *display, int first_keycode, int keysyms_per_keycode, KeySym *keysyms, int num_codes); KeySym *XGetKeyboardMapping(Display *display, KeyCode first_keycode, int keycode_count, int *keysyms_per_keycode_return); int XDisplayKeycodes(Display *display, int *min_keycodes_return, int *max_keycodes_return); int XSetModifierMapping(Display *display, XModifierKeymap *modmap); XModifierKeymap *XGetModifierMapping(Display *display); XModifierKeymap *XNewModifiermap(int…

XSupportsLocale, XSetLocaleModifiers – determine locale support and configure locale modifiers SyntaxBool XSupportsLocale(void); char *XSetLocaleModifiers(char *modifier_list);Argumentsmodifier_list Specifies the modifiers.DescriptionThe XSupportsLocale function returns True if Xlib functions are capable of operating under the current locale. If it returns False, Xlib locale-dependent functions for which the XLocaleNotSupported return status is defined will return XLocaleNotSupported. Other Xlib locale-dependent routines…

XSetLineAttributes, XSetDashes – GC convenience routines Syntaxint XSetLineAttributes(Display *display, GC gc, unsigned int line_width, int line_style, int cap_style, int join_style); int XSetDashes(Display *display, GC gc, int dash_offset, char dash_list[], int n);Argumentscap_style Specifies the line-style and cap-style you want to set for the specified GC. You can pass CapNotLast, CapButt, CapRound, or CapProjecting. dash_list Specifies the…

XSetInputFocus, XGetInputFocus – control input focus Syntaxint XSetInputFocus(Display *display, Window focus, int revert_to, Time time); int XGetInputFocus(Display *display, Window *focus_return, int *revert_to_return);Argumentsdisplay Specifies the connection to the X server. focus Specifies the window, PointerRoot, or None. focus_return Returns the focus window, PointerRoot, or None. revert_to Specifies where the input focus reverts to if the window…

XAllocIconSize, XSetIconSizes, XGetIconSizes, XIconSize – allocate icon size structure and set or read a window’s WM_ICON_SIZES property SyntaxXIconSize *XAllocIconSize(void); int XSetIconSizes(Display *display, Window w, XIconSize *size_list, int count); Status XGetIconSizes(Display *display, Window w, XIconSize **size_list_return, int count_return); Argumentsdisplay Specifies the connection to the X server. count Specifies the number of items in the size list….

XSetWMIconName, XGetWMIconName, XSetIconName, XGetIconName – set or read a window’s WM_ICON_NAME property Syntaxvoid XSetWMIconName(Display *display, Window w, XTextProperty *text_prop); Status XGetWMIconName(Display *display, Window w, XTextProperty *text_prop_return); int XSetIconName(Display *display, Window w, char *icon_name); Status XGetIconName(Display *display, Window w, char **icon_name_return);Argumentsdisplay Specifies the connection to the X server. icon_name Specifies the icon name, which should be…

XSetErrorHandler, XGetErrorText, XDisplayName, XSetIOErrorHandler, XGetErrorDatabaseText – default error handlers Syntaxint (*XSetErrorHandler(int (*handler)(Display *, XErrorEvent *)))(); int XGetErrorText(Display *display, int code, char *buffer_return, int length); char *XDisplayName(char *string); int (*XSetIOErrorHandler(int (*handler)(Display *)))(); int XGetErrorDatabaseText(Display *display, char *name, char *message, char *default_string, char *buffer_return, int length);Argumentsbuffer_return Returns the error description. code Specifies the error code for which…

XOpenIM, XCloseIM, XSetIMValues, XGetIMValues, XDisplayOfIM, XLocaleOfIM, XRegisterIMInstantiateCallback, XUnregisterIMInstantiateCallback – open, close, and obtain input method information SyntaxXIM XOpenIM(Display *display, XrmDatabase db, char *res_name, char *res_class); Status XCloseIM(XIM im); char *XSetIMValues(XIM im, …); char *XGetIMValues(XIM im, …); Display *XDisplayOfIM(XIM im); char *XLocaleOfIM(XIM im); Bool XRegisterIMInstantiateCallback(Display *display, XrmDatabase db, char *res_name, char *res_class, XIDProc callback, XPointer client_data);…

XSetICValues, XGetICValues – set and obtain XIC values Syntaxchar * XSetICValues(XIC ic, …); char * XGetICValues(XIC ic, …);Argumentsic Specifies the input context. … Specifies the variable length argument list to set or get XIC values.DescriptionThe XSetICValues function returns NULL if no error occurred; otherwise, it returns the name of the first argument that could not…

XSetICFocus, XUnsetICFocus – set and unset input context focus Syntaxvoid XSetICFocus(XIC ic); void XUnsetICFocus(XIC ic);Argumentsic Specifies the input context.DescriptionThe XSetICFocus function allows a client to notify an input method that the focus window attached to the specified input context has received keyboard focus. The input method should take action to provide appropriate feedback. Complete feedback…

XSetArcMode, XSetSubwindowMode, XSetGraphicsExposure – GC convenience routines Syntaxint XSetArcMode(Display *display, GC gc, int arc_mode); int XSetSubwindowMode(Display *display, GC gc, int subwindow_mode); int XSetGraphicsExposures(Display *display, GC gc, Bool graphics_exposures);Argumentsarc_mode Specifies the arc mode. You can pass ArcChord or ArcPieSlice. display Specifies the connection to the X server. gc Specifies the GC. graphics_exposures Specifies a Boolean value…

XSetState, XSetFunction, XSetPlaneMask, XSetForeground, XSetBackground – GC convenience routines Syntaxint XSetState(Display *display, GC gc, unsigned long foreground, unsigned int background, int function, unsigned long plane_mask); int XSetFunction(Display *display, GC gc, int function); int XSetPlaneMask(Display *display, GC gc, unsigned long plane_mask); int XSetForeground(Display *display, GC gc, unsigned long foreground); int XSetBackground(Display *display, GC gc, unsigned long…

XSetState, XSetFunction, XSetPlaneMask, XSetForeground, XSetBackground – GC convenience routines Syntaxint XSetState(Display *display, GC gc, unsigned long foreground, unsigned int background, int function, unsigned long plane_mask); int XSetFunction(Display *display, GC gc, int function); int XSetPlaneMask(Display *display, GC gc, unsigned long plane_mask); int XSetForeground(Display *display, GC gc, unsigned long foreground); int XSetBackground(Display *display, GC gc, unsigned long…