Linux Manuals session 3

XReadBitmapFile, XReadBitmapFileData, XWriteBitmapFile, XCreatePixmapFromBitmapData, XCreateBitmapFromData – manipulate bitmaps Syntaxint XReadBitmapFile(Display *display, Drawable d, char *filename, unsigned int *width_return, unsigned int *height_return, Pixmap *bitmap_return, int *x_hot_return, int *y_hot_return); int XReadBitmapFileData(char *filename, unsigned int *width_return, unsigned int *height_return, unsigned char *data_return, int *x_hot_return, int *y_hot_return); int XWriteBitmapFile(Display *display, char *filename, Pixmap bitmap, unsigned int width, unsigned int…

XIconifyWindow, XWithdrawWindow, XReconfigureWMWindow – manipulate top-level windows SyntaxStatus XIconifyWindow(Display *display, Window w, int screen_number); Status XWithdrawWindow(Display *display, Window w, int screen_number); Status XReconfigureWMWindow(Display *display, Window w, int screen_number, unsigned int value_mask, XWindowChanges *values);Argumentsdisplay Specifies the connection to the X server. screen_number Specifies the appropriate screen number on the host server. value_mask Specifies which values are…

XNextEvent, XPeekEvent, XWindowEvent, XCheckWindowEvent, XMaskEvent, XCheckMaskEvent, XCheckTypedEvent, XCheckTypedWindowEvent – select events by type Syntaxint XNextEvent(Display *display, XEvent *event_return); int XPeekEvent(Display *display, XEvent *event_return); int XWindowEvent(Display *display, Window w, long event_mask, XEvent *event_return); Bool XCheckWindowEvent(Display *display, Window w, long event_mask, XEvent *event_return); int XMaskEvent(Display *display, long event_mask, XEvent *event_return); Bool XCheckMaskEvent(Display *display, long event_mask, XEvent *event_return);…

XConfigureWindow, XMoveWindow, XResizeWindow, XMoveResizeWindow, XSetWindowBorderWidth, XWindowChanges – configure windows and window changes structure Syntaxint XConfigureWindow(Display *display, Window w, unsigned value_mask, XWindowChanges *changes); int XMoveWindow(Display *display, Window w, int x, y); int XResizeWindow(Display *display, Window w, unsigned width, unsigned height); int XMoveResizeWindow(Display *display, Window w, int x, int y, unsigned width, unsigned height); int XSetWindowBorderWidth(Display *display,…

XGetWindowAttributes, XGetGeometry, XWindowAttributes – get current window attribute or geometry and current window attributes structure SyntaxStatus XGetWindowAttributes(Display *display, Window w, XWindowAttributes *window_attributes_return); Status XGetGeometry(Display *display, Drawable d, Window *root_return, int *x_return, int *y_return, unsigned int *width_return, unsigned int *height_return, unsigned int *border_width_return, unsigned int *depth_return);Argumentsborder_width_return Returns the border width in pixels. d Specifies the drawable,…

XWarpPointer – move pointer Syntaxint XWarpPointer(Display *display, Window src_w, Window dest_w, int src_x, int src_y, unsigned int src_width, unsigned int src_height, int dest_x, int dest_y);Argumentsdest_w Specifies the destination window or None. dest_x dest_y Specify the x and y coordinates within the destination window. display Specifies the connection to the X server. src_x src_y src_width src_height…

XAllocWMHints, XSetWMHints, XGetWMHints, XWMHints – allocate window manager hints structure and set or read a window’s WM_HINTS property SyntaxXWMHints *XAllocWMHints(void); int XSetWMHints(Display *display, Window w, XWMHints *wmhints); XWMHints *XGetWMHints(Display *display, Window w);Argumentsdisplay Specifies the connection to the X server. w Specifies the window. wmhints Specifies the XWMHints structure to be used.DescriptionThe XAllocWMHints function allocates and…

XParseGeometry, XWMGeometry – parse window geometry Syntaxint XParseGeometry(char *parsestring, int *x_return, int *y_return, unsigned int *width_return, unsigned int *height_return); int XWMGeometry(Display *display, int screen, char *user_geom, char *def_geom, unsigned int bwidth, XSizeHints *hints, int *x_return, int *y_return, int *width_return, int *height_return, int *gravity_return);Argumentsposition default_position Specify the geometry specifications. display Specifies the connection to the X…

XGetVisualInfo, XMatchVisualInfo, XVisualIDFromVisual, XVisualInfo – obtain visual information and visual structure SyntaxXVisualInfo *XGetVisualInfo(Display *display, long vinfo_mask, XVisualInfo *vinfo_template, int *nitems_return); Status XMatchVisualInfo(Display *display, int screen, int depth, int class, XVisualInfo *vinfo_return); VisualID XVisualIDFromVisual(Visual *visual);Argumentsclass Specifies the class of the screen. depth Specifies the depth of the screen. display Specifies the connection to the X server….

XGetVisualInfo, XMatchVisualInfo, XVisualIDFromVisual, XVisualInfo – obtain visual information and visual structure SyntaxXVisualInfo *XGetVisualInfo(Display *display, long vinfo_mask, XVisualInfo *vinfo_template, int *nitems_return); Status XMatchVisualInfo(Display *display, int screen, int depth, int class, XVisualInfo *vinfo_return); VisualID XVisualIDFromVisual(Visual *visual);Argumentsclass Specifies the class of the screen. depth Specifies the depth of the screen. display Specifies the connection to the X server….

XVisibilityEvent – VisibilityNotify event structure StructuresThe structure for VisibilityNotify events contains: typedef struct {         int type;       /* VisibilityNotify */         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 window;         int state; } XVisibilityEvent; When you receive this event, the structure members are set…

XVaCreateNestedList – allocate a nested variable argument list Syntaxtypedef void * XVaNestedList; XVaNestedList XVaCreateNestedList(int dummy, …);Argumentsdummy Specifies an unused argument (required by ANSI C). … Specifies the variable length argument list.DescriptionThe XVaCreateNestedList function allocates memory and copies its arguments into a single list pointer, which may be used as a value for arguments requiring a…

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…

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);…

XUnmapWindow, XUnmapSubwindows – unmap windows Syntaxint XUnmapWindow(Display *display, Window w); int XUnmapSubwindows(Display *display, Window w);Argumentsdisplay Specifies the connection to the X server. w Specifies the window.DescriptionThe XUnmapWindow function unmaps the specified window and causes the X server to generate an UnmapNotify event. If the specified window is already unmapped, XUnmapWindow has no effect. Normal exposure…

XUnmapWindow, XUnmapSubwindows – unmap windows Syntaxint XUnmapWindow(Display *display, Window w); int XUnmapSubwindows(Display *display, Window w);Argumentsdisplay Specifies the connection to the X server. w Specifies the window.DescriptionThe XUnmapWindow function unmaps the specified window and causes the X server to generate an UnmapNotify event. If the specified window is already unmapped, XUnmapWindow has no effect. Normal exposure…

XUnmapEvent – UnmapNotify event structure StructuresThe 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 members…

XInitThreads, XLockDisplay, XUnlockDisplay – multi-threading support SyntaxStatus XInitThreads(void); void XLockDisplay(Display *display); void XUnlockDisplay(Display *display);Argumentsdisplay Specifies the connection to the X server.DescriptionThe 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 is made. This function returns…

XLoadFont, XQueryFont, XLoadQueryFont, XFreeFont, XGetFontProperty, XUnloadFont, XCharStruct, XFontProp, XChar2b, XFontStruct – load or unload fonts and font metric structures SyntaxFont 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);Argumentsatom Specifies the atom…

XSaveContext, XFindContext, XDeleteContext, XUniqueContext – associative look-up routines Syntaxint 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); Argumentscontext Specifies the context type to which the data belongs. data Specifies the data to be associated with the window…