SysTutorials Posts

XCreateColormap, XCopyColormapAndFree, XFreeColormap, XColor – create, copy, or destroy colormaps and color structure Syntax Colormap XCreateColormap(Display *display, Window w, Visual *visual, int alloc); Colormap XCopyColormapAndFree(Display *display, Colormap colormap); int XFreeColormap(Display *display, Colormap colormap); Arguments alloc Specifies the colormap entries to be allocated. You can pass AllocNone or AllocAll. colormap Specifies the colormap that you want…

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…

XOpenDisplay, XCloseDisplay – connect or disconnect to X server Syntax Display *XOpenDisplay(char *display_name); int XCloseDisplay(Display *display); Arguments display Specifies the connection to the X server. display_name Specifies the hardware display name, which determines the display and communications domain to be used. On a POSIX-conformant system, if the display_name is NULL, it defaults to the value…

XOpenDevice, XCloseDevice – open or close an extension input device Synopsis #include <X11/extensions/XInput.h> XDevice *XOpenDevice( Display *display, XID device_id); XCloseDevice( Display *display, XDevice *device); display Specifies the connection to the X server. device_id Specifies the id of the device to be opened device Specifies the device to be closed Description The XOpenDevice request makes an…

XPolygonRegion, XClipBox – generate regions Syntax Region XPolygonRegion(XPoint points[], int n, int fill_rule); int XClipBox(Region r, XRectangle *rect_return); Arguments fill_rule Specifies the fill-rule you want to set for the specified GC. You can pass EvenOddRule or WindingRule. n Specifies the number of points in the polygon. points Specifies an array of points. r Specifies the…

XClientMessageEvent – ClientMessage event structure Structures The structure for ClientMessage events contains: typedef struct {         int type;       /* ClientMessage */         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;         Atom message_type;         int format;         union {                 char b[20];                 short s[10];                 long l[5];                 } data; }…

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…