Section 3: library functions
XUnmapWindow, XUnmapSubwindows – unmap windows Syntax int XUnmapWindow(Display *display, Window w); int XUnmapSubwindows(Display *display, Window w); Arguments display Specifies the connection to the X server. w Specifies the window. Description The XUnmapWindow function unmaps the specified window and causes the X server to generate an UnmapNotify event. If the specified window is already unmapped, XUnmapWindow…
XUnmapWindow, XUnmapSubwindows – unmap windows Syntax int XUnmapWindow(Display *display, Window w); int XUnmapSubwindows(Display *display, Window w); Arguments display Specifies the connection to the X server. w Specifies the window. Description The XUnmapWindow function unmaps the specified window and causes the X server to generate an UnmapNotify event. If the specified window is already unmapped, XUnmapWindow…
XUnmapEvent – UnmapNotify event structure Structures The structure for UnmapNotify events contains: typedef struct { int type; /* UnmapNotify */ unsigned long serial; /* # of last request processed by server */ Bool send_event; /* true if this came from a SendEvent request */ Display *display; /* Display the event was read from */ Window event; Window window; Bool from_configure; } XUnmapEvent; When you receive this event, the structure…
XInitThreads, XLockDisplay, XUnlockDisplay – multi-threading support Syntax Status XInitThreads(void); void XLockDisplay(Display *display); void XUnlockDisplay(Display *display); Arguments display Specifies the connection to the X server. Description The XInitThreads function initializes Xlib support for concurrent threads. This function must be the first Xlib function a multi-threaded program calls, and it must complete before any other Xlib call…
XLoadFont, XQueryFont, XLoadQueryFont, XFreeFont, XGetFontProperty, XUnloadFont, XCharStruct, XFontProp, XChar2b, XFontStruct – load or unload fonts and font metric structures Syntax Font XLoadFont(Display *display, char *name); XFontStruct *XQueryFont(Display *display, XID font_ID); XFontStruct *XLoadQueryFont(Display *display, char *name); int XFreeFont(Display *display, XFontStruct *font_struct); Bool XGetFontProperty(XFontStruct *font_struct, Atom atom, unsigned long *value_return); int XUnloadFont(Display *display, Font font); Arguments atom…
XSaveContext, XFindContext, XDeleteContext, XUniqueContext – associative look-up routines Syntax int XSaveContext(Display *display, XID rid, XContext context, XPointer data); int XFindContext(Display *display, XID rid, XContext context, XPointer *data_return); int XDeleteContext(Display *display, XID rid, XContext context); XContext XUniqueContext(void); Arguments context Specifies the context type to which the data belongs. data Specifies the data to be associated with…
XIntersectRegion, XUnionRegion, XUnionRectWithRegion, XSubtractRegion, XXorRegion, XOffsetRegion, XShrinkRegion – region arithmetic Syntax int XIntersectRegion(Region sra, Region srb, Region dr_return); int XUnionRegion(Region sra, Region srb, Region dr_return); int XUnionRectWithRegion(XRectangle *rectangle, Region src_region, Region dest_region_return); int XSubtractRegion(Region sra, Region srb, Region dr_return); int XXorRegion(Region sra, Region srb, Region dr_return); int XOffsetRegion(Region r, int dx, int dy); int XShrinkRegion(Region…
XIntersectRegion, XUnionRegion, XUnionRectWithRegion, XSubtractRegion, XXorRegion, XOffsetRegion, XShrinkRegion – region arithmetic Syntax int XIntersectRegion(Region sra, Region srb, Region dr_return); int XUnionRegion(Region sra, Region srb, Region dr_return); int XUnionRectWithRegion(XRectangle *rectangle, Region src_region, Region dest_region_return); int XSubtractRegion(Region sra, Region srb, Region dr_return); int XXorRegion(Region sra, Region srb, Region dr_return); int XOffsetRegion(Region r, int dx, int dy); int XShrinkRegion(Region…
XInstallColormap, XUninstallColormap, XListInstalledColormaps – control colormaps Syntax int XInstallColormap(Display *display, Colormap colormap); int XUninstallColormap(Display *display, Colormap colormap); Colormap *XListInstalledColormaps(Display *display, Window w, int *num_return); Arguments colormap Specifies the colormap. display Specifies the connection to the X server. num_return Returns the number of currently installed colormaps. w Specifies the window that determines the screen. Description The…
XGrabServer, XUngrabServer – grab the server Syntax int XGrabServer(Display *display); int XUngrabServer(Display *display); Arguments display Specifies the connection to the X server. Description The XGrabServer function disables processing of requests and close downs on all other connections than the one this request arrived on. You should not grab the X server any more than is…
XGrabPointer, XUngrabPointer, XChangeActivePointerGrab – grab the pointer Syntax int XGrabPointer(Display *display, Window grab_window, Bool owner_events, unsigned int event_mask, int pointer_mode, int keyboard_mode, Window confine_to, Cursor cursor, Time time); int XUngrabPointer(Display *display, Time time); int XChangeActivePointerGrab(Display *display, unsigned int event_mask, Cursor cursor, Time time); Arguments confine_to Specifies the window to confine the pointer in or None….
XGrabKeyboard, XUngrabKeyboard – grab the keyboard Syntax int XGrabKeyboard(Display *display, Window grab_window, Bool owner_events, int pointer_mode, int keyboard_mode, Time time); int XUngrabKeyboard(Display *display, Time time); Arguments display Specifies the connection to the X server. grab_window Specifies the grab window. keyboard_mode Specifies further processing of keyboard events. You can pass GrabModeSync or GrabModeAsync. owner_events Specifies a…
XGrabKey, XUngrabKey – grab keyboard keys Syntax int XGrabKey(Display *display, int keycode, unsigned int modifiers, Window grab_window, Bool owner_events, int pointer_mode, int keyboard_mode); int XUngrabKey(Display *display, int keycode, unsigned int modifiers, Window grab_window); Arguments display Specifies the connection to the X server. grab_window Specifies the grab window. keyboard_mode Specifies further processing of keyboard events. You…
XGrabDeviceKey, XUngrabDeviceKey – grab/ungrab extension input device Keys Synopsis #include <X11/extensions/XInput.h> int XGrabDeviceKey( Display *display, XDevice *device, unsigned int key, unsigned int modifiers, XDevice *modifier_device, Window grab_window, Bool owner_events, unsigned int event_count, XEventClass *event_list, int this_device_mode, int other_devices_mode); int XUngrabDeviceKey( Display *display, XDevice *device, unsigned int key, unsigned int modifiers, XDevice *modifier_device, Window grab_window); display…
XGrabDeviceButton, XUngrabDeviceButton – grab/ungrab extension input device buttons Synopsis #include <X11/extensions/XInput.h> int XGrabDeviceButton( Display *display, XDevice *device, unsigned int button, unsigned int modifiers, XDevice* modifier_device, Window grab_window, Bool owner_events, unsigned int event_count, XEventClass *event_list, int this_device_mode, int other_devices_mode); int XUngrabDeviceButton( Display *display, XDevice *device, unsigned int button, unsigned int modifiers, XDevice* modifier_device, Window grab_window); display…
XGrabDevice, XUngrabDevice – grab/release the specified extension device Synopsis #include <X11/extensions/XInput.h> int XGrabDevice( Display *display, XDevice* device, Window grab_window, Bool owner_events, int event_count, XEventClass *event_list, int this_device_mode, int other_devices_mode, Time time); int XUngrabDevice( Display *display, XDevice *device, Time time); display Specifies the connection to the X server. device Specifies the device to be grabbed or…
XGrabButton, XUngrabButton – grab pointer buttons Syntax int XGrabButton(Display *display, unsigned int button, unsigned int modifiers, Window grab_window, Bool owner_events, unsigned int event_mask, int pointer_mode, keyboard_mode, Window confine_to, Cursor cursor); int XUngrabButton(Display *display, unsigned int button, unsigned int modifiers, Window grab_window); Arguments button Specifies the pointer button that is to be grabbed or released or…
XDefineCursor, XUndefineCursor – define cursors Syntax int XDefineCursor(Display *display, Window w, Cursor cursor); int XUndefineCursor(Display *display, Window w); Arguments cursor Specifies the cursor that is to be displayed or None. display Specifies the connection to the X server. w Specifies the window. Description If a cursor is set, it will be used when the pointer…
XTranslateCoordinates – translate window coordinates Syntax Bool XTranslateCoordinates(Display *display, Window src_w, dest_w, int src_x, int src_y, int *dest_x_return, int *dest_y_return, Window *child_return); Arguments child_return Returns the child if the coordinates are contained in a mapped child of the destination window. dest_w Specifies the destination window. dest_x_return dest_y_return Return the x and y coordinates within the…
XSendEvent, XDisplayMotionBufferSize, XGetMotionEvents, XTimeCoord – send events and pointer motion history structure Syntax Status XSendEvent(Display *display, Window w, Bool propagate, long event_mask, XEvent *event_send); unsigned long XDisplayMotionBufferSize(Display *display); XTimeCoord *XGetMotionEvents(Display *display, Window w, Time start, Time stop, int *nevents_return); Arguments display Specifies the connection to the X server. event_mask Specifies the event mask. event_send Specifies…