Linux Manuals session 3

XGetEventData, XFreeEventData, XGenericEventCookie – retrieve and free additional event data through cookies. SyntaxBool XGetEventData(Display *display, XGenericEventCookie *cookie); void XFreeEventData(Display *display, XGenericEventCookie *cookie); Argumentsdisplay Specifies the connection to the X server. cookie Specifies the cookie to free or retrieve the data for. Structurestypedef struct {         int type;         unsigned long serial;         Bool send_event;         Display *display;         int extension;         int…

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…

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…

XGetDeviceProperty, XChangeDeviceProperty, XDeleteDeviceProperty – Get, change or delete a device’s property. Synopsis#include <X11/extensions/XInput.h>int XGetDeviceProperty( Display *display, XDevice *device, Atom property, long offset, long length, Bool delete, Atom req_type, Atom *actual_type_return, int *actual_format_return, unsigned long *nitems_return, unsigned long *bytes_after_return, unsigned char **prop_return)void XChangeDeviceProperty( Display *display, XDevice *device, Atom property, Atom type, int format, int mode, const…

XGetDeviceMotionEvents, XDeviceTimeCoord – get device motion history Synopsis#include <X11/extensions/XInput.h>XDeviceTimeCoord *XGetDeviceMotionEvents( Display *display, XDevice *device, Time start, Time stop, int *nevents_return, int *mode_return, int *axis_count_return);display Specifies the connection to the X server.device Specifies the device whose motion history is to be queried.start, stop Specify the time interval in which the events are returned from the motion…

XGetDeviceModifierMapping, XSetDeviceModifierMapping – query or change device modifier mappings Synopsis#include <X11/extensions/XInput.h>int XSetDeviceModifierMapping( Display *display, XDevice *device, XModifierKeymap *modmap);XModifierKeymap *XGetDeviceModifierMapping( Display *display, XDevice *device);display Specifies the connection to the X server.device Specifies the device whose modifier mapping is to be queried or modified.modmap Specifies a pointer to the XModifierKeymap structure.DescriptionThe XSetDeviceModifierMapping request specifies the KeyCodes of…

XGetDeviceKeyMapping, XChangeDeviceKeyMapping – query or change device key mappings Synopsis#include <X11/extensions/XInput.h>KeySym *XGetDeviceKeyMapping( Display *display, XDevice *device, KeyCode first_keycode, int keycode_count, int *keysyms_per_keycode_return); display Specifies the connection to the X server.device Specifies the device whose key mapping is to be queried or modified.first_keycode Specifies the first KeyCode to be returned.keycode_count Specifies the number of KeyCodes to…

XSetDeviceFocus, XGetDeviceFocus – control extension input device focus Synopsis#include <X11/extensions/XInput.h>XSetDeviceFocus( Display *display, XDevice *device, Window focus, int revert_to, Time time);XGetDeviceFocus( Display *display, XDevice *device, Window *focus_return, int *revert_to_return, int * time_return);Arguments display Specifies the connection to the X server.device Specifies the device whose focus is to be queried or changed.focus Specifies the window, PointerRoot, FollowKeyboard,…

XChangeDeviceDontPropagateList, XGetDeviceDontPropagateList – query or change the dont-propagate-list for extension devices Synopsis#include <X11/extensions/XInput.h>int XChangeDeviceDontPropagateList( Display *display, Window window, int count, XEventClass *event_list, int mode);XEventClass* XGetDeviceDontPropagateList( Display *display, Window window, int *count);display Specifies the connection to the X server.window Specifies the window whose dont-propagate-list is to be queried or modified.event_list Specifies a pointer to a list…

XGetDeviceControl, XChangeDeviceControl – query and change input device controls Synopsis#include <X11/extensions/XInput.h>XDeviceControl *XGetDeviceControl( Display *display, XDevice *device, int *controlType);int XChangeDeviceControl( Display *display, XDevice *device, int controlType, XDeviceControl *control);display Specifies the connection to the X server.device Specifies the device whose control is to be interrogated or modified.controlType Specifies the type of control to be interrogated or changed.control…

XSetDeviceButtonMapping, XGetDeviceButtonMapping – query or change device button mappings Synopsis#include <X11/extensions/XInput.h>int XSetDeviceButtonMapping( Display *display, XDevice *device, unsigned char map[], int nmap);int XGetDeviceButtonMapping( Display *display, XDevice *device, unsigned char map_return[], int nmap);display Specifies the connection to the X server.device Specifies the device whose button mapping is to be queried or changed.map Specifies the mapping list.map_return Returns…

XSetCommand, XGetCommand – set or read a window’s WM_COMMAND property Syntaxint XSetCommand(Display *display, Window w, char **argv, int argc); Status XGetCommand(Display *display, Window w, char ***argv_return, int *argc_return);Argumentsargc Specifies the number of arguments. argc_return Returns the number of arguments returned. argv Specifies the application’s argument list. argv_return Returns the application’s argument list. display Specifies the…

XAllocClassHint, XSetClassHint, XGetClassHint, XClassHint – allocate class hints structure and set or read a window’s WM_CLASS property SyntaxXClassHint *XAllocClassHint(void); XSetClassHint(Display *display, Window w, XClassHint *class_hints); Status XGetClassHint(Display *display, Window w, XClassHint *class_hints_return);Argumentsdisplay Specifies the connection to the X server. class_hints Specifies the XClassHint structure that is to be used. class_hints_return Returns the XClassHint structure. w…

XInternAtom, XInternAtoms, XGetAtomName, XGetAtomNames – create or return atom names SyntaxAtom XInternAtom(Display *display, char *atom_name, Bool only_if_exists); Status XInternAtoms(Display *display, char **names, int count, Bool only_if_exists, Atom *atoms_return); char *XGetAtomName(Display *display, Atom atom); Status XGetAtomNames(Display *display, Atom *atoms, int count, char **names_return);Argumentsatom Specifies the atom for the property name you want returned. atoms Specifies the…

XInternAtom, XInternAtoms, XGetAtomName, XGetAtomNames – create or return atom names SyntaxAtom XInternAtom(Display *display, char *atom_name, Bool only_if_exists); Status XInternAtoms(Display *display, char **names, int count, Bool only_if_exists, Atom *atoms_return); char *XGetAtomName(Display *display, Atom atom); Status XGetAtomNames(Display *display, Atom *atoms, int count, char **names_return);Argumentsatom Specifies the atom for the property name you want returned. atoms Specifies the…

XGetEventData, XFreeEventData, XGenericEventCookie – retrieve and free additional event data through cookies. SyntaxBool XGetEventData(Display *display, XGenericEventCookie *cookie); void XFreeEventData(Display *display, XGenericEventCookie *cookie); Argumentsdisplay Specifies the connection to the X server. cookie Specifies the cookie to free or retrieve the data for. Structurestypedef struct {         int type;         unsigned long serial;         Bool send_event;         Display *display;         int extension;         int…

XCreateGC, XCopyGC, XChangeGC, XGetGCValues, XFreeGC, XGContextFromGC, XGCValues – create or free graphics contexts and graphics context structure SyntaxGC XCreateGC(Display *display, Drawable d, unsigned long valuemask, XGCValues *values); int XCopyGC(Display *display, GC src, unsigned long valuemask, GC dest); int XChangeGC(Display *display, GC gc, unsigned long valuemask, XGCValues *values); Status XGetGCValues(Display *display, GC gc, unsigned long valuemask,…

XCreateGC, XCopyGC, XChangeGC, XGetGCValues, XFreeGC, XGContextFromGC, XGCValues – create or free graphics contexts and graphics context structure SyntaxGC XCreateGC(Display *display, Drawable d, unsigned long valuemask, XGCValues *values); int XCopyGC(Display *display, GC src, unsigned long valuemask, GC dest); int XChangeGC(Display *display, GC gc, unsigned long valuemask, XGCValues *values); Status XGetGCValues(Display *display, GC gc, unsigned long valuemask,…

XStringListToTextProperty, XTextPropertyToStringList, XFreeStringList, XTextProperty – convert string lists and text property structure SyntaxStatus XStringListToTextProperty(char **list, int count, XTextProperty *text_prop_return); Status XTextPropertyToStringList(XTextProperty *text_prop, char ***list_return, int *count_return); void XFreeStringList(char **list);Argumentscount Specifies the number of strings. count_return Returns the number of strings. list Specifies the list of strings to be freed. list Specifies a list of null-terminated…

XCreatePixmap, XFreePixmap – create or destroy pixmaps SyntaxPixmap XCreatePixmap(Display *display, Drawable d, unsigned int width, unsigned int height, unsigned int depth); int XFreePixmap(Display *display, Pixmap pixmap);Argumentsd Specifies which screen the pixmap is created on. depth Specifies the depth of the pixmap. display Specifies the connection to the X server. pixmap Specifies the pixmap. width height…