Section 3: library functions
XClearArea, XClearWindow – clear area or window Syntax int XClearArea(Display *display, Window w, int x, int y, unsigned width, unsigned height, Bool exposures); int XClearWindow(Display *display, Window w); Arguments display Specifies the connection to the X server. exposures Specifies a Boolean value that indicates if Expose events are to be generated. w Specifies the window….
XClearArea, XClearWindow – clear area or window Syntax int XClearArea(Display *display, Window w, int x, int y, unsigned width, unsigned height, Bool exposures); int XClearWindow(Display *display, Window w); Arguments display Specifies the connection to the X server. exposures Specifies a Boolean value that indicates if Expose events are to be generated. w Specifies the window….
XAllocClassHint, XSetClassHint, XGetClassHint, XClassHint – allocate class hints structure and set or read a window’s WM_CLASS property Syntax XClassHint *XAllocClassHint(void); XSetClassHint(Display *display, Window w, XClassHint *class_hints); Status XGetClassHint(Display *display, Window w, XClassHint *class_hints_return); Arguments display Specifies the connection to the X server. class_hints Specifies the XClassHint structure that is to be used. class_hints_return Returns the…
XRaiseWindow, XLowerWindow, XCirculateSubwindows, XCirculateSubwindowsUp, XCirculateSubwindowsDown, XRestackWindows – change window stacking order Syntax int XRaiseWindow(Display *display, Window w); int XLowerWindow(Display *display, Window w); int XCirculateSubwindows(Display *display, Window w, int direction); int XCirculateSubwindowsUp(Display *display, Window w); int XCirculateSubwindowsDown(Display *display, Window w); int XRestackWindows(Display *display, Window windows[], int nwindows); Arguments direction Specifies the direction (up or down) that…
SDL_DestroyCond – Destroy a condition variable Synopsis #include "SDL.h" #include "SDL_thread.h" void SDL_DestroyCond(SDL_cond *cond); Description Destroys a condition variable. See Also SDL_CreateCond
SDLKey – SDL Keysym Definitions SDL Keysym definitions SDLKey ASCII value Common Name SDLK_BACKSPACE ‘’ backspace SDLK_TAB ‘ ‘ tab SDLK_CLEAR clear SDLK_RETURN ‘ ‘ return SDLK_PAUSE pause SDLK_ESCAPE ‘^[‘ escape SDLK_SPACE ‘ ‘ space SDLK_EXCLAIM ‘!’ exclaim SDLK_QUOTEDBL ‘"’ quotedbl SDLK_HASH ‘#’ hash SDLK_DOLLAR ‘$’ dollar SDLK_AMPERSAND ‘&’ ampersand SDLK_QUOTE ”’ quote SDLK_LEFTPAREN ‘(‘…
XRaiseWindow, XLowerWindow, XCirculateSubwindows, XCirculateSubwindowsUp, XCirculateSubwindowsDown, XRestackWindows – change window stacking order Syntax int XRaiseWindow(Display *display, Window w); int XLowerWindow(Display *display, Window w); int XCirculateSubwindows(Display *display, Window w, int direction); int XCirculateSubwindowsUp(Display *display, Window w); int XCirculateSubwindowsDown(Display *display, Window w); int XRestackWindows(Display *display, Window windows[], int nwindows); Arguments direction Specifies the direction (up or down) that…
XRaiseWindow, XLowerWindow, XCirculateSubwindows, XCirculateSubwindowsUp, XCirculateSubwindowsDown, XRestackWindows – change window stacking order Syntax int XRaiseWindow(Display *display, Window w); int XLowerWindow(Display *display, Window w); int XCirculateSubwindows(Display *display, Window w, int direction); int XCirculateSubwindowsUp(Display *display, Window w); int XCirculateSubwindowsDown(Display *display, Window w); int XRestackWindows(Display *display, Window windows[], int nwindows); Arguments direction Specifies the direction (up or down) that…
XCirculateRequestEvent – CirculateRequest event structure Structures The structure for CirculateRequest events contains: typedef struct { int type; /* CirculateRequest */ 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 parent; Window window; int place; /* PlaceOnTop, PlaceOnBottom */ } XCirculateRequestEvent; When you receive this event, the…
XCirculateEvent – CirculateNotify event structure Structures The structure for CirculateNotify events contains: typedef struct { int type; /* CirculateNotify */ 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; int place; /* PlaceOnTop, PlaceOnBottom */ } XCirculateEvent; When you receive this event, the…
XNextEvent, XPeekEvent, XWindowEvent, XCheckWindowEvent, XMaskEvent, XCheckMaskEvent, XCheckTypedEvent, XCheckTypedWindowEvent – select events by type Syntax int 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…
XNextEvent, XPeekEvent, XWindowEvent, XCheckWindowEvent, XMaskEvent, XCheckMaskEvent, XCheckTypedEvent, XCheckTypedWindowEvent – select events by type Syntax int 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…
XNextEvent, XPeekEvent, XWindowEvent, XCheckWindowEvent, XMaskEvent, XCheckMaskEvent, XCheckTypedEvent, XCheckTypedWindowEvent – select events by type Syntax int 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…
XNextEvent, XPeekEvent, XWindowEvent, XCheckWindowEvent, XMaskEvent, XCheckMaskEvent, XCheckTypedEvent, XCheckTypedWindowEvent – select events by type Syntax int 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…
XIfEvent, XCheckIfEvent, XPeekIfEvent – check the event queue with a predicate procedure Syntax int XIfEvent(Display *display, XEvent *event_return, Bool (*predicate)(), XPointer arg); Bool XCheckIfEvent(Display *display, XEvent *event_return, Bool (*predicate)(), XPointer arg); int XPeekIfEvent(Display *display, XEvent *event_return, Bool (*predicate)(), XPointer arg); Arguments arg Specifies the user-supplied argument that will be passed to the predicate procedure. display…
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…
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…
XChangeWindowAttributes, XSetWindowBackground, XSetWindowBackgroundPixmap, XSetWindowBorder, XSetWindowBorderPixmap, XSetWindowColormap – change window attributes Syntax int XChangeWindowAttributes(Display *display, Window w, unsigned long valuemask, XSetWindowAttributes *attributes); int XSetWindowBackground(Display *display, Window w, unsigned long background_pixel); int XSetWindowBackgroundPixmap(Display *display, Window w, Pixmap background_pixmap); int XSetWindowBorder(Display *display, Window w, unsigned long border_pixel); int XSetWindowBorderPixmap(Display *display, Window w, Pixmap border_pixmap); int XSetWindowColormap(Display *display, Window…
XChangeSaveSet, XAddToSaveSet, XRemoveFromSaveSet – change a client’s save set Syntax int XChangeSaveSet(Display *display, Window w, int change_mode); int XAddToSaveSet(Display *display, Window w); int XRemoveFromSaveSet(Display *display, Window w); Arguments change_mode Specifies the mode. You can pass SetModeInsert or SetModeDelete. display Specifies the connection to the X server. w Specifies the window that you want to add…
XGetWindowProperty, XListProperties, XChangeProperty, XRotateWindowProperties, XDeleteProperty – obtain and change window properties Syntax int XGetWindowProperty(Display *display, Window w, Atom property, long long_offset, long 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); Atom *XListProperties(Display *display, Window w, int *num_prop_return); int XChangeProperty(Display *display, Window w, Atom property, Atom…