SysTutorials Posts

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…

XTextWidth, XTextWidth16 – compute text width Syntax int XTextWidth(XFontStruct *font_struct, char *string, int count); int XTextWidth16(XFontStruct *font_struct, XChar2b *string, int count); Arguments count Specifies the character count in the specified string. font_struct Specifies the font used for the width computation. string Specifies the character string. Description The XTextWidth and XTextWidth16 functions return the width of…

XTextWidth, XTextWidth16 – compute text width Syntax int XTextWidth(XFontStruct *font_struct, char *string, int count); int XTextWidth16(XFontStruct *font_struct, XChar2b *string, int count); Arguments count Specifies the character count in the specified string. font_struct Specifies the font used for the width computation. string Specifies the character string. Description The XTextWidth and XTextWidth16 functions return the width of…

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

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

XDrawText, XDrawText16, XTextItem, XTextItem16 – draw polytext text and text drawing structures Syntax int XDrawText(Display *display, Drawable d, GC gc, int x, int y, XTextItem *items, int nitems); int XDrawText16(Display *display, Drawable d, GC gc, int x, int y, XTextItem16 *items, int nitems); Arguments d Specifies the drawable. display Specifies the connection to the X…

XDrawText, XDrawText16, XTextItem, XTextItem16 – draw polytext text and text drawing structures Syntax int XDrawText(Display *display, Drawable d, GC gc, int x, int y, XTextItem *items, int nitems); int XDrawText16(Display *display, Drawable d, GC gc, int x, int y, XTextItem16 *items, int nitems); Arguments d Specifies the drawable. display Specifies the connection to the X…

XTextExtents, XTextExtents16, XQueryTextExtents, XQueryTextExtents16 – compute or query text extents Syntax int XTextExtents(XFontStruct *font_struct, char *string, int nchars, int *direction_return, int *font_ascent_return, int *font_descent_return, XCharStruct *overall_return); int XTextExtents16(XFontStruct *font_struct, XChar2b *string, int nchars, int *direction_return, int *font_ascent_return, int *font_descent_return, XCharStruct *overall_return); int XQueryTextExtents(Display *display, XID font_ID, char *string, int nchars, int *direction_return, int *font_ascent_return, int…

XTextExtents, XTextExtents16, XQueryTextExtents, XQueryTextExtents16 – compute or query text extents Syntax int XTextExtents(XFontStruct *font_struct, char *string, int nchars, int *direction_return, int *font_ascent_return, int *font_descent_return, XCharStruct *overall_return); int XTextExtents16(XFontStruct *font_struct, XChar2b *string, int nchars, int *direction_return, int *font_ascent_return, int *font_descent_return, XCharStruct *overall_return); int XQueryTextExtents(Display *display, XID font_ID, char *string, int nchars, int *direction_return, int *font_ascent_return, int…

XTestQueryExtension, XTestCompareCursorWithWindow, XTestCompareCurrentCursorWithWindow, XTestFakeKeyEvent, XTestFakeButtonEvent, XTestFakeMotionEvent, XTestFakeRelativeMotionEvent, XTestGrabControl, XTestSetGContextOfGC, XTestSetVisualIDOfVisual, XTestDiscard – XTest extension functions Synopsis cc [ flag … ] file … -lXtst [ library … ] #include <X11/extensions/XTest.h> Bool XTestQueryExtension(display, event_base_return, error_base_return, major_version_return, minor_version_return); Display *display; int *event_base_return; int *error_base_return; int *major_version_return; int *minor_version_return; Bool XTestCompareCursorWithWindow(display, window, cursor); Display *display; Window window; Cursor…

XSynchronize, XSetAfterFunction – enable or disable synchronization Syntax int (*XSynchronize(Display *display, Bool onoff))(); int (*XSetAfterFunction(Display *display, int (*procedure)()))(); Arguments display Specifies the connection to the X server. procedure Specifies the procedure to be called. onoff Specifies a Boolean value that indicates whether to enable or disable synchronization. Description The XSynchronize function returns the previous after…

XFlush, XSync, XEventsQueued, XPending – handle output buffer or event queue Syntax int XFlush(Display *display); int XSync(Display *display, Bool discard); int XEventsQueued(Display *display, int mode); int XPending(Display *display); Arguments discard Specifies a Boolean value that indicates whether XSync discards all events on the event queue. display Specifies the connection to the X server. mode Specifies…

XSupportsLocale, XSetLocaleModifiers – determine locale support and configure locale modifiers Syntax Bool XSupportsLocale(void); char *XSetLocaleModifiers(char *modifier_list); Arguments modifier_list Specifies the modifiers. Description The 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…

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…

XInitImage, XCreateImage, XGetPixel, XPutPixel, XSubImage, XAddPixel, XDestroyImage – image utilities Syntax Status XInitImage(XImage *image); XImage *XCreateImage(Display *display, Visual *visual, unsigned int depth, int format, int offset, char *data, unsigned int width, unsigned int height, int bitmap_pad, int bytes_per_line); unsigned long XGetPixel(XImage *ximage, int x, int y); int XPutPixel(XImage *ximage, int x, int y, unsigned long…