SysTutorials Posts

XAddConnectionWatch, XRemoveConnectionWatch, XProcessInternalConnection, XInternalConnectionNumbers – handle Xlib internal connections Syntax typedef void (*XConnectionWatchProc)(Display *display, XPointer client_data, int fd, Bool opening, XPointer *watch_data); Status XAddConnectionWatch(Display *display, XWatchProc procedure, XPointer client_data); Status XRemoveConnectionWatch(Display *display, XWatchProc procedure, XPointer client_data); void XProcessInternalConnection(Display *display, int fd); Status XInternalConnectionNumbers(Display *display, int **fd_return, int *count_return); Arguments client_data Specifies the additional client data….

XSetScreenSaver, XForceScreenSaver, XActivateScreenSaver, XResetScreenSaver, XGetScreenSaver – manipulate the screen saver Syntax int XSetScreenSaver(Display *display, int timeout, int interval, int prefer_blanking, int allow_exposures); int XForceScreenSaver(Display *display, int mode); int XActivateScreenSaver(Display *display); int XResetScreenSaver(Display *display); int XGetScreenSaver(Display *display, int *timeout_return, int *interval_return, int *prefer_blanking_return, int *allow_exposures_return); Arguments allow_exposures Specifies the screen save control values. You can pass…

WildMidi_Shutdown – Shutdown the library Library libWildMidi Synopsis #include <wildmidi_lib.h> void WildMidi_Shutdown(void) Description Shuts down the wildmidi library, resetting data and freeing up memory used by the library. Once this is called, the library is no longer initialized and WildMidi_Init(3) will need to be called again. See Also WildMidi_GetString(3), WildMidi_Init(3), WildMidi_MasterVolume(3), WildMidi_Open(3), WildMidi_OpenBuffer(3), WildMidi_SetOption(3), WildMidi_GetOutput(3),…

WildMidi_SetOption – Set a library option for a specific midi Library libWildMidi Synopsis #include <wildmidi_lib.h> int WildMidi_SetOption (midi *handle, unsigned short int options, unsigned short int setting) Description Set a library option for a specific midi. handle The identifier obtained from opening a midi file with WildMidi_Open(3) or WildMidi_OpenBuffer(3) options The option or options you…

WildMidi_OpenBuffer – Open a midi file buffer for processing Library libWildMidi Synopsis #include <wildmidi_lib.h> midi *WildMidi_OpenBuffer (unsigned char *midibuffer, unsigned long int size) Description Open a midi file, that you have buffered in memory, for processing. midibuffer The memory location of the buffered midi file. This buffer needs to be in standard midi file format….

WildMidi_Open – Open a midi file for processing Library libWildMidi Synopsis #include <wildmidi_lib.h> midi *WildMidi_Open (const char *midifile) Description Open a MIDI file pointed to by midifile for processing. This file must be in standard midi format. Return Value Returns NULL on error and sends a message to stderr, otherwise returns a handle for the…

WildMidi_MasterVolume – sets the overall audio level of the library. Library libWildMidi Synopsis #include <wildmidi_lib.h> int WildMidi_MasterVolume (unsigned char master_volume) Description Sets the overall library volume level to master_volume. The range of master_volume is between 0 and 127 with 100 being the default. Return Value Returns -1 on error, otherwise returns 0. See Also WildMidi_GetString(3),…

WildMidi_Init – Initialize the library Library libWildMidi Synopsis #include <wildmidi_lib.h> WildMidi_Init (const char *config_file, unsigned short int rate, unsigned short int options) Description Initializes libWildMidi in preparation for playback. This function only needs to be called once by the program using libWildMidi. config-file The file that contains the instrument configuration for the library. rate The…

WildMidi_GetString – Get string from library Library libWildMidi Synopsis #include <wildmidi_lib.h> const char *WildMidi_GetString (unsigned short int info); Description Returns a pointer to a string depending on what info is set to. At this stage WM_GS_VERSION is the only setting for info which returns a pointer to a string containing libWildMidi version information. Return Value…

WildMidi_GetOutput – retrieve raw audio data Library libWildMidi Synopsis #include <wildmidi_lib.h> int WildMidi_GetOutput (midi *handle, char *buffer, unsigned long int size); Description Places size bytes of audio data from a handle, previously opened by WildMidi_Open(3) or WildMidi_OpenBuffer(3), into a buffer pointer to by buffer. buffer must be at least size bytes, with size being a…

WildMidi_GetInfo – get information on a midi Library libWildMidi Synopsis #include <wildmidi_lib.h> struct _WM_Info *WildMidi_GetInfo (midi *handle); Description Obtains information allowing you to determine song position, current options, and any copyright information. handle The identifier obtained from opening a midi file with WildMidi_Open(3) or WildMidi_OpenBuffer(3) Return Value On error returns NULL with an error message…

WildMidi_FastSeek – Move to a position in a midi file Library libWildMidi Synopsis #include <wildmidi_lib.h> int WildMidi_FastSeek (midi *handle, unsigned long int *sample_pos); Description Resets all note specific midi states and active notes before scanning to sample_pos samples from the beginning taking note of any changes to midi channel states. The next call to WildMidi_GetOutput(3)…

WildMidi_Close – Close an open midi handle Library libWildMidi Synopsis #include <wildmidi_lib.h> int WildMidi_Close (midi *handle) Description Finish processing MIDI data or file. handle The identifier obtained from opening a midi file with WildMidi_Open(3) or WildMidi_OpenBuffer(3) Return Value returns -1 on error, otherwise returns 0 See Also WildMidi_GetString(3), WildMidi_Init(3), WildMidi_MasterVolume(3), WildMidi_Open(3), WildMidi_OpenBuffer(3), WildMidi_SetOption(3), WildMidi_GetOutput(3), WildMidi_GetInfo(3),…

BlackPixelOfScreen, WhitePixelOfScreen, CellsOfScreen, DefaultColormapOfScreen, DefaultDepthOfScreen, DefaultGCOfScreen, DefaultVisualOfScreen, DoesBackingStore, DoesSaveUnders, DisplayOfScreen, XScreenNumberOfScreen, EventMaskOfScreen, HeightOfScreen, HeightMMOfScreen, MaxCmapsOfScreen, MinCmapsOfScreen, PlanesOfScreen, RootWindowOfScreen, WidthOfScreen, WidthMMOfScreen – screen information functions and macros Syntax unsigned long BlackPixelOfScreen(Screen *screen); unsigned long WhitePixelOfScreen(Screen *screen); int CellsOfScreen(Screen *screen); Colormap DefaultColormapOfScreen(Screen *screen); int DefaultDepthOfScreen(Screen *screen); GC DefaultGCOfScreen(Screen *screen); Visual *DefaultVisualOfScreen(Screen *screen); int DoesBackingStore(Screen *screen); Bool DoesSaveUnders(Screen…

BlackPixelOfScreen, WhitePixelOfScreen, CellsOfScreen, DefaultColormapOfScreen, DefaultDepthOfScreen, DefaultGCOfScreen, DefaultVisualOfScreen, DoesBackingStore, DoesSaveUnders, DisplayOfScreen, XScreenNumberOfScreen, EventMaskOfScreen, HeightOfScreen, HeightMMOfScreen, MaxCmapsOfScreen, MinCmapsOfScreen, PlanesOfScreen, RootWindowOfScreen, WidthOfScreen, WidthMMOfScreen – screen information functions and macros Syntax unsigned long BlackPixelOfScreen(Screen *screen); unsigned long WhitePixelOfScreen(Screen *screen); int CellsOfScreen(Screen *screen); Colormap DefaultColormapOfScreen(Screen *screen); int DefaultDepthOfScreen(Screen *screen); GC DefaultGCOfScreen(Screen *screen); Visual *DefaultVisualOfScreen(Screen *screen); int DoesBackingStore(Screen *screen); Bool DoesSaveUnders(Screen…

BlackPixelOfScreen, WhitePixelOfScreen, CellsOfScreen, DefaultColormapOfScreen, DefaultDepthOfScreen, DefaultGCOfScreen, DefaultVisualOfScreen, DoesBackingStore, DoesSaveUnders, DisplayOfScreen, XScreenNumberOfScreen, EventMaskOfScreen, HeightOfScreen, HeightMMOfScreen, MaxCmapsOfScreen, MinCmapsOfScreen, PlanesOfScreen, RootWindowOfScreen, WidthOfScreen, WidthMMOfScreen – screen information functions and macros Syntax unsigned long BlackPixelOfScreen(Screen *screen); unsigned long WhitePixelOfScreen(Screen *screen); int CellsOfScreen(Screen *screen); Colormap DefaultColormapOfScreen(Screen *screen); int DefaultDepthOfScreen(Screen *screen); GC DefaultGCOfScreen(Screen *screen); Visual *DefaultVisualOfScreen(Screen *screen); int DoesBackingStore(Screen *screen); Bool DoesSaveUnders(Screen…

AllPlanes, BlackPixel, WhitePixel, ConnectionNumber, DefaultColormap, DefaultDepth, XListDepths, DefaultGC, DefaultRootWindow, DefaultScreenOfDisplay, DefaultScreen, DefaultVisual, DisplayCells, DisplayPlanes, DisplayString, XMaxRequestSize, XExtendedMaxRequestSize, LastKnownRequestProcessed, NextRequest, ProtocolVersion, ProtocolRevision, QLength, RootWindow, ScreenCount, ScreenOfDisplay, ServerVendor, VendorRelease – Display macros and functions Syntax unsigned long AllPlanes; unsigned long BlackPixel(Display *display, int screen_number); unsigned long WhitePixel(Display *display, int screen_number); int ConnectionNumber(Display *display); Colormap DefaultColormap(Display *display, int…

Date and time calculations – Classes class DateInterval Date interval described by a number of a given time unit. class PricingPeriod Time pricingperiod described by a number of a given time unit. class Calendar calendar class class Date Concrete date class. struct DateGeneration Date-generation rule. class DayCounter day counter class class Period Modules Calendars Day…

ql/time/weekday.hpp – Weekday enumeration. Synopsis enum Weekday { Sunday = 1, Monday = 2, Tuesday = 3, Wednesday = 4, Thursday = 5, Friday = 6, Saturday = 7, Sun = 1, Mon = 2, Tue = 3, Wed = 4, Thu = 5, Fri = 6, Sat = 7 } Functions Enumerations enum Weekday…

WMShell – window-manager shell widget from the X toolkit Synopsis #include <X11/Shell.h> Description WMShell is a widget which is defined in the X Toolkit. We document its existence here for completeness. Please refer to the X Window System documentation for the real information regarding this widget. X Resources Name Class Type Default Access XtNtitle XtCTitle…