Section 3: library functions
XDrawString, XDrawString16 – draw text characters Syntax int XDrawString(Display *display, Drawable d, GC gc, int x, int y, char *string, int length); int XDrawString16(Display *display, Drawable d, GC gc, int x, int y, XChar2b *string, int length); Arguments d Specifies the drawable. display Specifies the connection to the X server. gc Specifies the GC. length…
XDrawLine, XDrawLines, XDrawSegments, XSegment – draw lines, polygons, and line structure Syntax int XDrawLine(Display *display, Drawable d, GC gc, int x1, int y1, int x2, int y2); int XDrawLines(Display *display, Drawable d, GC gc, XPoint *points, int npoints, int mode); int XDrawSegments(Display *display, Drawable d, GC gc, XSegment *segments, int nsegments); Arguments d Specifies the…
XDrawRectangle, XDrawRectangles, XRectangle – draw rectangles and rectangles structure Syntax int XDrawRectangle(Display *display, Drawable d, GC gc, int x, int y, unsigned int width, unsigned int height); int XDrawRectangles(Display *display, Drawable d, GC gc, XRectangle rectangles[], int nrectangles); Arguments d Specifies the drawable. display Specifies the connection to the X server. gc Specifies the GC….
XDrawRectangle, XDrawRectangles, XRectangle – draw rectangles and rectangles structure Syntax int XDrawRectangle(Display *display, Drawable d, GC gc, int x, int y, unsigned int width, unsigned int height); int XDrawRectangles(Display *display, Drawable d, GC gc, XRectangle rectangles[], int nrectangles); Arguments d Specifies the drawable. display Specifies the connection to the X server. gc Specifies the GC….
XDrawPoint, XDrawPoints, XPoint – draw points and points structure Syntax int XDrawPoint(Display *display, Drawable d, GC gc, int x, int y); int XDrawPoints(Display *display, Drawable d, GC gc, XPoint *points, int npoints, int mode); Arguments d Specifies the drawable. display Specifies the connection to the X server. gc Specifies the GC. mode Specifies the coordinate…
XDrawPoint, XDrawPoints, XPoint – draw points and points structure Syntax int XDrawPoint(Display *display, Drawable d, GC gc, int x, int y); int XDrawPoints(Display *display, Drawable d, GC gc, XPoint *points, int npoints, int mode); Arguments d Specifies the drawable. display Specifies the connection to the X server. gc Specifies the GC. mode Specifies the coordinate…
XDrawLine, XDrawLines, XDrawSegments, XSegment – draw lines, polygons, and line structure Syntax int XDrawLine(Display *display, Drawable d, GC gc, int x1, int y1, int x2, int y2); int XDrawLines(Display *display, Drawable d, GC gc, XPoint *points, int npoints, int mode); int XDrawSegments(Display *display, Drawable d, GC gc, XSegment *segments, int nsegments); Arguments d Specifies the…
XDrawLine, XDrawLines, XDrawSegments, XSegment – draw lines, polygons, and line structure Syntax int XDrawLine(Display *display, Drawable d, GC gc, int x1, int y1, int x2, int y2); int XDrawLines(Display *display, Drawable d, GC gc, XPoint *points, int npoints, int mode); int XDrawSegments(Display *display, Drawable d, GC gc, XSegment *segments, int nsegments); Arguments d Specifies the…
XDrawImageString, XDrawImageString16 – draw image text Syntax int XDrawImageString(Display *display, Drawable d, GC gc, int x, int y, char *string, int length); int XDrawImageString16(Display *display, Drawable d, GC gc, int x, int y, XChar2b *string, int length); Arguments d Specifies the drawable. display Specifies the connection to the X server. gc Specifies the GC. length…
XDrawImageString, XDrawImageString16 – draw image text Syntax int XDrawImageString(Display *display, Drawable d, GC gc, int x, int y, char *string, int length); int XDrawImageString16(Display *display, Drawable d, GC gc, int x, int y, XChar2b *string, int length); Arguments d Specifies the drawable. display Specifies the connection to the X server. gc Specifies the GC. length…
XDrawArc, XDrawArcs, XArc – draw arcs and arc structure Syntax int XDrawArc(Display *display, Drawable d, GC gc, int x, int y, unsigned int width, unsigned int height, int angle1, int angle2); int XDrawArcs(Display *display, Drawable d, GC gc, XArc *arcs, int narcs); Arguments angle1 Specifies the start of the arc relative to the three-o’clock position…
XDrawArc, XDrawArcs, XArc – draw arcs and arc structure Syntax int XDrawArc(Display *display, Drawable d, GC gc, int x, int y, unsigned int width, unsigned int height, int angle1, int angle2); int XDrawArcs(Display *display, Drawable d, GC gc, XArc *arcs, int narcs); Arguments angle1 Specifies the start of the arc relative to the three-o’clock position…
XOpenOM, XCloseOM, XSetOMValues, XGetOMValues, XDisplayOfOM, XLocaleOfOM – open output methods Syntax XOM 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); Arguments display Specifies the connection to the X server. db Specifies a pointer to the resource database. res_name Specifies the…
XOpenIM, XCloseIM, XSetIMValues, XGetIMValues, XDisplayOfIM, XLocaleOfIM, XRegisterIMInstantiateCallback, XUnregisterIMInstantiateCallback – open, close, and obtain input method information Syntax XIM 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…
XSetErrorHandler, XGetErrorText, XDisplayName, XSetIOErrorHandler, XGetErrorDatabaseText – default error handlers Syntax int (*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); Arguments buffer_return Returns the error description. code Specifies the error…
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…
XChangeKeyboardMapping, XGetKeyboardMapping, XDisplayKeycodes, XSetModifierMapping, XGetModifierMapping, XNewModifiermap, XInsertModifiermapEntry, XDeleteModifiermapEntry, XFreeModifiermap, XModifierKeymap – manipulate keyboard encoding and keyboard encoding structure Syntax int 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…
XAddHost, XAddHosts, XListHosts, XRemoveHost, XRemoveHosts, XSetAccessControl, XEnableAccessControl, XDisableAccessControl, XHostAddress, XServerInterpretedAddress – control host access and host control structure Syntax int XAddHost(Display *display, XHostAddress *host); int XAddHosts(Display *display, XHostAddress *hosts, int num_hosts); XHostAddress *XListHosts(Display *display, int *nhosts_return, Bool state_return); int XRemoveHost(Display *display, XHostAddress *host); int XRemoveHosts(Display *display, XHostAddress *hosts, int num_hosts); int XSetAccessControl(Display *display, int mode);…
XFontsOfFontSet, XBaseFontNameListOfFontSet, XLocaleOfFontSet, XContextDependentDrawing, XContextualDrawing, XDirectionalDependentDrawing – obtain fontset information Syntax int XFontsOfFontSet(XFontSet font_set, XFontStruct ***font_struct_list_return, char ***font_name_list_return); char *XBaseFontNameListOfFontSet(XFontSet font_set); char *XLocaleOfFontSet(XFontSet font_set); Bool XContextDependentDrawing(XFontSet font_set); Bool XContextualDrawing(XFontSet font_set); Bool XDirectionalDependentDrawing(XFontSet font_set); Arguments font_set Specifies the font set. font_name_list_return Returns the list of font names. font_struct_list_return Returns the list of font structs. Description The…
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…