SysTutorials Posts

 Xrandr – X Resize, Rotate and Reflection extension. Syntax #include <X11/extensions/Xrandr.h> Bool XRRQueryExtension (Display *dpy, int *event_base_return, int *error_base_return); Status XRRQueryVersion (Display *dpy, int *major_version_return, int *minor_version_return); XRRScreenConfiguration *XRRGetScreenInfo (Display *dpy, Drawable draw); void XRRFreeScreenConfigInfo ( XRRScreenConfiguration *config); Status XRRSetScreenConfig (Display *dpy, XRRScreenConfiguration *config, Drawable draw, int size_index, Rotation rotation, Time timestamp); Status XRRSetScreenConfigAndRate (Display…

 Xrandr – X Resize, Rotate and Reflection extension. Syntax #include <X11/extensions/Xrandr.h> Bool XRRQueryExtension (Display *dpy, int *event_base_return, int *error_base_return); Status XRRQueryVersion (Display *dpy, int *major_version_return, int *minor_version_return); XRRScreenConfiguration *XRRGetScreenInfo (Display *dpy, Drawable draw); void XRRFreeScreenConfigInfo ( XRRScreenConfiguration *config); Status XRRSetScreenConfig (Display *dpy, XRRScreenConfiguration *config, Drawable draw, int size_index, Rotation rotation, Time timestamp); Status XRRSetScreenConfigAndRate (Display…

 Xrandr – X Resize, Rotate and Reflection extension. Syntax #include <X11/extensions/Xrandr.h> Bool XRRQueryExtension (Display *dpy, int *event_base_return, int *error_base_return); Status XRRQueryVersion (Display *dpy, int *major_version_return, int *minor_version_return); XRRScreenConfiguration *XRRGetScreenInfo (Display *dpy, Drawable draw); void XRRFreeScreenConfigInfo ( XRRScreenConfiguration *config); Status XRRSetScreenConfig (Display *dpy, XRRScreenConfiguration *config, Drawable draw, int size_index, Rotation rotation, Time timestamp); Status XRRSetScreenConfigAndRate (Display…

 Xrandr – X Resize, Rotate and Reflection extension. Syntax #include <X11/extensions/Xrandr.h> Bool XRRQueryExtension (Display *dpy, int *event_base_return, int *error_base_return); Status XRRQueryVersion (Display *dpy, int *major_version_return, int *minor_version_return); XRRScreenConfiguration *XRRGetScreenInfo (Display *dpy, Drawable draw); void XRRFreeScreenConfigInfo ( XRRScreenConfiguration *config); Status XRRSetScreenConfig (Display *dpy, XRRScreenConfiguration *config, Drawable draw, int size_index, Rotation rotation, Time timestamp); Status XRRSetScreenConfigAndRate (Display…

 Xrandr – X Resize, Rotate and Reflection extension. Syntax #include <X11/extensions/Xrandr.h> Bool XRRQueryExtension (Display *dpy, int *event_base_return, int *error_base_return); Status XRRQueryVersion (Display *dpy, int *major_version_return, int *minor_version_return); XRRScreenConfiguration *XRRGetScreenInfo (Display *dpy, Drawable draw); void XRRFreeScreenConfigInfo ( XRRScreenConfiguration *config); Status XRRSetScreenConfig (Display *dpy, XRRScreenConfiguration *config, Drawable draw, int size_index, Rotation rotation, Time timestamp); Status XRRSetScreenConfigAndRate (Display…

XQueryTree – query window tree information Syntax Status XQueryTree(Display *display, Window w, Window *root_return, Window *parent_return, Window **children_return, unsigned int *nchildren_return); Arguments children_return Returns the list of children. display Specifies the connection to the X server. nchildren_return Returns the number of children. parent_return Returns the parent window. root_return Returns the root window. w Specifies the…

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…

XQueryPointer – get pointer coordinates Syntax Bool XQueryPointer(Display *display, Window w, Window *root_return, Window *child_return, int *root_x_return, int *root_y_return, int *win_x_return, int *win_y_return, unsigned int *mask_return); Arguments child_return Returns the child window that the pointer is located in, if any. display Specifies the connection to the X server. mask_return Returns the current state of the…

XChangeKeyboardControl, XGetKeyboardControl, XAutoRepeatOn, XAutoRepeatOff, XBell, XQueryKeymap, XKeyboardControl – manipulate keyboard settings and keyboard control structure Syntax int XChangeKeyboardControl(Display *display, unsigned long value_mask, XKeyboardControl *values); int XGetKeyboardControl(Display *display, XKeyboardState *values_return); int XAutoRepeatOn(Display *display); int XAutoRepeatOff(Display *display); int XBell(Display *display, int percent); int XQueryKeymap(Display *display, char keys_return[32]); Arguments display Specifies the connection to the X server. keys_return…

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…

XQueryExtension, XListExtensions, XFreeExtensionList – list available extensions Syntax Bool XQueryExtension(display, name, major_opcode_return, first_event_return, first_error_return) char **XListExtensions(display, nextensions_return) XFreeExtensionList(list) Arguments display Specifies the connection to the X server. name Specifies the extension name. major_opcode_return Returns the major opcode. first_event_return Returns the first event code, if any. first_error_return Returns the first error code, if any. nextensions_return Returns…

XQueryDeviceState – query the state of an extension input device. Synopsis #include <X11/extensions/XInput.h> XDeviceState* XQueryDeviceState( Display *display, XDevice *device); display Specifies the connection to the X server. device Specifies the device whose state is to be queried. Description The XQueryDeviceState request queries the state of an input device. The current state of keys and buttons…

XQueryColor, XQueryColors, XLookupColor, XParseColor – obtain color values Syntax int XQueryColor(Display *display, Colormap colormap, XColor *def_in_out); int XQueryColors(Display *display, Colormap colormap, XColor defs_in_out[], int ncolors); Status XLookupColor(Display *display, Colormap colormap, char *color_name, XColor *exact_def_return, XColor *screen_def_return); Status XParseColor(Display *display, Colormap colormap, char *spec, XColor *exact_def_return); Arguments colormap Specifies the colormap. color_name Specifies the color name…

XQueryColor, XQueryColors, XLookupColor, XParseColor – obtain color values Syntax int XQueryColor(Display *display, Colormap colormap, XColor *def_in_out); int XQueryColors(Display *display, Colormap colormap, XColor defs_in_out[], int ncolors); Status XLookupColor(Display *display, Colormap colormap, char *color_name, XColor *exact_def_return, XColor *screen_def_return); Status XParseColor(Display *display, Colormap colormap, char *spec, XColor *exact_def_return); Arguments colormap Specifies the colormap. color_name Specifies the color name…

XQueryBestSize, XQueryBestTile, XQueryBestStipple – determine efficient sizes Syntax Status XQueryBestSize(Display *display, int class, Drawable which_screen, unsigned int width, unsigned int height, unsigned int *width_return, unsigned int *height_return); Status XQueryBestTile(Display *display, Drawable which_screen, unsigned int width, unsigned int height, unsigned int *width_return, unsigned int *height_return); Status XQueryBestStipple(Display *display, Drawable which_screen, unsigned int width, unsigned int height,…

XQueryBestSize, XQueryBestTile, XQueryBestStipple – determine efficient sizes Syntax Status XQueryBestSize(Display *display, int class, Drawable which_screen, unsigned int width, unsigned int height, unsigned int *width_return, unsigned int *height_return); Status XQueryBestTile(Display *display, Drawable which_screen, unsigned int width, unsigned int height, unsigned int *width_return, unsigned int *height_return); Status XQueryBestStipple(Display *display, Drawable which_screen, unsigned int width, unsigned int height,…

XQueryBestSize, XQueryBestTile, XQueryBestStipple – determine efficient sizes Syntax Status XQueryBestSize(Display *display, int class, Drawable which_screen, unsigned int width, unsigned int height, unsigned int *width_return, unsigned int *height_return); Status XQueryBestTile(Display *display, Drawable which_screen, unsigned int width, unsigned int height, unsigned int *width_return, unsigned int *height_return); Status XQueryBestStipple(Display *display, Drawable which_screen, unsigned int width, unsigned int height,…

XRecolorCursor, XFreeCursor, XQueryBestCursor – manipulate cursors Syntax int XRecolorCursor(Display *display, Cursor cursor, XColor *foreground_color, XColor *background_color); int XFreeCursor(Display *display, Cursor cursor); Status XQueryBestCursor(Display *display, Drawable d, unsigned int width, unsigned int height, unsigned int *width_return, unsigned int *height_return); Arguments background_color Specifies the RGB values for the background of the source. cursor Specifies the cursor. d…

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…