Macros
#define	SCREEN_LEFT dispinfo.left

#define	SCREEN_RIGHT dispinfo.right

#define	SCREEN_TOP dispinfo.top

#define	SCREEN_BOTTOM dispinfo.bottom

#define	SCRHEIGHT dispinfo.height

#define	SCRWIDTH dispinfo.width

#define	process_key_messages gdi_process_key_messages

#define	bitmap_save_and_backdrop gdi_bitmap_save_and_backdrop

#define	bitmap_to_backdrop gdi_bitmap_to_backdrop

#define	bitmap_save gdi_bitmap_save

#define	CALLTYPE ELCALLTYPE

#define	HOOK_ERROR -1 /* if error occurred */

#define	HOOK_CONTINUE 0 /* if drawing to continue after return from hook */

#define	HOOK_NODRAW 1 /* if drawing should not be done after hook */

#define	CAL_TARG_BEEP 1

#define	CAL_GOOD_BEEP 0

#define	CAL_ERR_BEEP -1

#define	DC_TARG_BEEP 3

#define	DC_GOOD_BEEP 2

#define	DC_ERR_BEEP -2

Functions
void	set_calibration_colors (COLORREF fg, COLORREF bg)

void	set_camera_setup_colors (COLORREF sc, COLORREF pbc, COLORREF tc)

void	set_target_size (UINT16 diameter, UINT16 holesize)

void	set_cal_sounds (char ontarget, char ongood, char *onbad)

void	set_dcorr_sounds (char ontarget, char ongood, char *onbad)

INT16	set_camera_image_position (INT16 left, INT16 top, INT16 right, INT16 bottom)

int	set_calibration_monitor_index (int monitor_index)

void	get_display_information (DISPLAYINFO *di)

INT16	init_expt_graphics (HWND hwnd, DISPLAYINFO *info)

void	close_expt_graphics (void)

void	wait_for_video_refresh (void)

UINT16	gdi_process_key_messages (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

void	wait_for_drawing (HWND hwnd)

int	gdi_bitmap_save_and_backdrop (HBITMAP hbm, INT16 xs, INT16 ys, INT16 width, INT16 height, char fname, char path, INT16 sv_options, INT16 xd, INT16 yd, UINT16 bx_options)

int	gdi_bitmap_to_backdrop (HBITMAP hbm, INT16 xs, INT16 ys, INT16 width, INT16 height, INT16 xd, INT16 yd, UINT16 bx_options)

int	gdi_bitmap_save (HBITMAP hbm, INT16 xs, INT16 ys, INT16 width, INT16 height, char fname, char path, INT16 sv_options)

INT16	set_setup_cal_display_hook (INT16(*hookfn)(void), INT16 options)

INT16	set_clear_cal_display_hook (INT16(*hookfn)(HDC hdc), INT16 options)

INT16 CALLTYPE	set_erase_cal_target_hook (INT16(*hookfn)(HDC hdc), INT16 options)

INT16 CALLTYPE	set_draw_cal_target_hook (INT16(hookfn)(HDC hdc, INT16 x, INT16 *y), INT16 options)

INT16	set_exit_cal_display_hook (INT16(*hookfn)(void), INT16 options)

INT16 CALLTYPE	set_cal_sound_hook (INT16(hookfn)(INT16 error), INT16 options)

INT16	set_record_abort_hide_hook (INT16(*hookfn)(void), INT16 options)

INT16	set_setup_image_display_hook (INT16(*hookfn)(INT16 width, INT16 height), INT16 options)

INT16	set_image_title_hook (INT16(hookfn)(INT16 threshold, char cam_name), INT16 options)

INT16	set_draw_image_line_hook (INT16(hookfn)(INT16 width, INT16 line, INT16 totlines, byte pixels), INT16 options)

INT16	set_set_image_palette_hook (INT16(*hookfn)(INT16 ncolors, byte r[], byte g[], byte b[]), INT16 options)

INT16	set_exit_image_display_hook (INT16(*hookfn)(void), INT16 options)

void	initialize_gc_window (int wwidth, int wheight, HBITMAP window_bitmap, HBITMAP background_bitmap, HWND window, RECT display_rect, int is_mask, int deadband)

void	redraw_gc_window (int x, int y)

HDC	get_window_dc (void)

INT16	release_window_dc (HDC hdc)

INT16	edit_dialog (HWND hwnd, LPSTR title, LPSTR msg, LPSTR txt, INT16 maxsize)

INT16	ask_session (HWND hw, LPSTR title, LPSTR msg, LPSTR path, INT16 pathmax, LPSTR txt, INT16 maxsize)

Variables
DISPLAYINFO	dispinfo

Detailed Description

Macro Definition Documentation

#define bitmap_save gdi_bitmap_save

See gdi_bitmap_save()

#define bitmap_save_and_backdrop gdi_bitmap_save_and_backdrop

See gdi_bitmap_save_and_backdrop()

#define bitmap_to_backdrop gdi_bitmap_to_backdrop

See gdi_bitmap_to_backdrop()

#define CAL_ERR_BEEP -1

Set calibration error sound in cal_sound_hook( ).

#define CAL_GOOD_BEEP 0

Set calibration success sound in cal_sound_hook( ).

#define CAL_TARG_BEEP 1

Set calibration target sound in cal_sound_hook( ).

#define CALLTYPE ELCALLTYPE

DEPRECATED

#define DC_ERR_BEEP -2

Set drift correction error sound in cal_sound_hook( ).

#define DC_GOOD_BEEP 2

Set drift correction success sound in cal_sound_hook( ).

#define DC_TARG_BEEP 3

Set drift correction target sound in cal_sound_hook( ).

#define HOOK_CONTINUE 0 /* if drawing to continue after return from hook */

DEPRECATED

#define HOOK_ERROR -1 /* if error occurred */

DEPRECATED

#define HOOK_NODRAW 1 /* if drawing should not be done after hook */

DEPRECATED

#define process_key_messages gdi_process_key_messages

See gdi_process_key_messages()

#define SCREEN_BOTTOM dispinfo.bottom

Coordinate for the bottom of the Display window. Assumes that DISPLAYINFO dispinfo variable has been defined.

#define SCREEN_LEFT dispinfo.left

Display window's left-hand coordinate. Assumes that DISPLAYINFO dispinfo variable has been defined.

#define SCREEN_RIGHT dispinfo.right

Display window's right-hand coordinate. Assumes that DISPLAYINFO dispinfo variable has been defined.

#define SCREEN_TOP dispinfo.top

Coordinate for the top of the Display window. Assumes that DISPLAYINFO dispinfo variable has been defined.

#define SCRHEIGHT dispinfo.height

Height of the Display window. Assumes that DISPLAYINFO dispinfo variable has been defined.

#define SCRWIDTH dispinfo.width

Width of the Display window. Assumes that DISPLAYINFO dispinfo variable has been defined.

Function Documentation

INT16 ask_session	(	HWND	hw,
		LPSTR	title,
		LPSTR	msg,
		LPSTR	path,
		INT16	pathmax,
		LPSTR	txt,
		INT16	maxsize
	)

This function accepts path and session name from the user.

Parameters

	hw	The "parent" window, usually the experiment window or `NULL` if no window exists.
	title	Text to be displayed in the frame of the dialog box.
	msg	Instructions to be displayed in the dialog box.
[in,out]	path	The default path and selected path upon return. If "" used as default path the default documents directory will be used as the default path.
	pathmax	size of the path parameter.
	txt	The buffer into which text will be entered. Any text in this buffer will be displayed as the initial contents of the edit box.
	maxsize	The maximum buffer length of txt.

Returns: 0 if the ENTER key was pressed or "OK" was clicked. 1 if 'ESC' pressed or "Cancel" clicked. -1 if ALT-F4 pressed to destroy the dialog box.

void close_expt_graphics ( void )

Call this function at the end of the experiment or before destroying the window registered with init_expt_graphics(). This call will disable calibration and drift correction until a new window is registered.

INT16 edit_dialog	(	HWND	hwnd,
		LPSTR	title,
		LPSTR	msg,
		LPSTR	txt,
		INT16	maxsize
	)

All experiments require the input of information: EDF file name, randomization file, and so on. This function implements a simple text-entry dialog box for this purpose. A title in the window frame and a message can be set, and the initial text set. The length of the text to be entered can also be limited.

Parameters

hwnd	The "parent" window, usually the experiment window or `NULL` if no window exists.
title	Text to be displayed in the frame of the dialog box.
msg	Instructions to be displayed in the dialog box.
txt	The buffer into which text will be entered. Any text in this buffer will be displayed as the initial contents of the edit box.
maxsize	The maximum buffer length of txt.

Returns: 0 if the ENTER key was pressed or "OK" was clicked. 1 if 'ESC' pressed or "Cancel" clicked. -1 if ALT-F4 pressed to destroy the dialog box.

int gdi_bitmap_save	(	HBITMAP	hbm,
		INT16	xs,
		INT16	ys,
		INT16	width,
		INT16	height,
		char *	fname,
		char *	path,
		INT16	sv_options
	)

This function saves the entire bitmap or selected part of a bitmap in an image file (with an extension of .png, .bmp, .jpg, or .tif). It creates the specified file if this file does not exist. If the file exists, it replaces the file unless SV_NOREPLACE is specified in the field of "sv_options". The directory to which the file will be written is specified in the path field.

Parameters

hbm	Handle to the bitmap image.
xs	Specifies the x-coordinate of the upper-left corner of the source bitmap.
ys	Specifies the y-coordinate of the upper-left corner of the source bitmap.
width	Specify the width of the source image to be copied (set to `0` to use all).
height	Specify the height of the source image to be copied (set to `0` to use all).
fname	Name of the image file to be saved. Currently, only .PNG, .BMP, .JPG, and .TIF files are saved.
path	Directory or drive path in quotes ("." for current directory).
sv_options	Use `SV_NOREPLACE` if not to replace an existing file; use `SV_MAKEPATH` to create a new path.

Returns: 0 if successful, else -1.

int gdi_bitmap_save_and_backdrop	(	HBITMAP	hbm,
		INT16	xs,
		INT16	ys,
		INT16	width,
		INT16	height,
		char *	fname,
		char *	path,
		INT16	sv_options,
		INT16	xd,
		INT16	yd,
		UINT16	bx_options
	)

This function saves the entire bitmap as a .BMP, .JPG, .PNG, or .TIF file, and transfers the image to tracker as backdrop for gaze cursors (See bitmap_save() and bitmap_to_backdrop() for more information).

Parameters

hbm	Handle to the bitmap image.
xs	Specifies the x-coordinate of the upper-left corner of the source bitmap.
ys	Specifies the y-coordinate of the upper-left corner of the source bitmap.
width	Specify the width of the source image to be copied (set to `0` to use all).
height	Specify the height of the source image to be copied (set to `0` to use all).
fname	Name of the image file to be saved. Currently, only .PNG, .BMP, .JPG, and .TIF files are saved.
path	Directory or drive path in quotes ("." for current directory).
sv_options	Use `SV_NOREPLACE` if not to replace an existing file; use `SV_MAKEPATH` to create a new path.
xd	Specifies the x-coordinate of the upper-left corner of the tracker screen.
yd	Specifies the y-coordinate of the upper-left corner of the tracker screen.
bx_options	Set with a bitwise OR of the following constants: `BX_MAXCONTRAST:` Maximizes contrast for clearest image. `BX_AVERAGE:` averages combined pixels. `BX_DARKEN:` chooses darkest (keep thin dark lines). `BX_LIGHTEN:` chooses darkest (keep thin white lines). `BX_NODITHER:` disables dithering to get clearest text. `BX_GREYSCALE:` converts to grayscale.

Returns: 0 if successful, -1 if couldn't save, -2 if couldn't transfer.

int gdi_bitmap_to_backdrop	(	HBITMAP	hbm,
		INT16	xs,
		INT16	ys,
		INT16	width,
		INT16	height,
		INT16	xd,
		INT16	yd,
		UINT16	bx_options
	)

This function transfers the bitmap to the tracker PC as backdrop for gaze cursors. The field "bx_options", set with bitwise OR of the following constants, determines how bitmap is processed: BX_AVERAGE (averaging combined pixels), BX_DARKEN (choosing darkest and keep thin dark lines), and BX_LIGHTEN (choosing darkest and keep thin white lines) control how bitmap size is reduced to fit tracker display; BX_MAXCONTRAST maximizes contrast for clearest image; BX_NODITHER disables the dithering of the image; BX_GREYSCALE converts the image to grayscale (grayscale works best for EyeLink I, text, etc.)

Parameters

hbm	Handle to the bitmap image.
xs	Specifies the x-coordinate of the upper-left corner of the source bitmap.
ys	Specifies the y-coordinate of the upper-left corner of the source bitmap.
width	Specify the width of the source image to be copied (set to `0` to use all).
height	Specify the height of the source image to be copied (set to `0` to use all).
xd	Specifies the x-coordinate of the upper-left corner of the tracker screen.
yd	Specifies the y-coordinate of the upper-left corner of the tracker screen.
bx_options	Set with a bitwise OR of the following constants: `BX_MAXCONTRAST:` Maximizes contrast for clearest image. `BX_AVERAGE:` averages combined pixels. `BX_DARKEN:` chooses darkest (keep thin dark lines). `BX_LIGHTEN:` chooses darkest (keep thin white lines). `BX_NODITHER:` disables dithering to get clearest text. `BX_GREYSCALE:` converts to grayscale.

Returns: 0 if successful, else -1 or -2.

UINT16 gdi_process_key_messages	(	HWND	hWnd,
		UINT	message,
		WPARAM	wParam,
		LPARAM	lParam
	)

Call this function in your window message processing function to handle WM_CHAR and WM_KEYDOWN messages. These will be translated to an EyeLink key code and saved for getkey().

Parameters

hWnd	Handle to window. This message may be `NULL`.
message	Windows message.
wParam	First message parameter.
lParam	Second windows parameter.

Returns: 0 or JUNK_KEY if no key generated.

Example:

    1 // The following code illustrates the use of process_key_messages().
    2 // This would usually be called from a message or event handler (see the
    3 // w32_demo_window.c module) for a complete example
    4 
    5 #include <eyelink.h>
    6 switch (message)
    7 {
    8 case WM_KEYDOWN:
    9 case WM_CHAR:
   10     // Processes key messages: these can be accessed by getkey()
   11     process_key_messages(hwnd, message, wparam, lparam);
   12     break;
   13 
   14     ...
   15     // Other windows messages and events
   16 }

See also: getkey() and translate_key_messages()

void get_display_information ( DISPLAYINFO * di )

Measures parameters of the current display mode, and fills a DISPLAYINFO structure with the data. This process may take over 100 milliseconds, as it measures actual refresh rate. The returned data can be used to compute sizes for drawing, and to check that the current display mode matches the requirements of the experiment. A global DISPLAYINFO structure called dispinfo should be set up at the start of the program if you wish to use the SCRWIDTH and SCRHEIGHT macros.

Remarks

This is the contents of the DISPLAYINFO structure:

    1 typedef struct
    2 {
    3      INT32 left;      // left of display
    4      INT32 top;       // top of display
    5      INT32 right;     // right of display
    6      INT32 bottom;    // bottom of display
    7      INT32 width;     // width of display
    8      INT32 height;    // height of display
    9      INT32 bits;      // bits per pixel
   10      INT32 palsize;   // total entries in palette (0 if not indexed)
   11      INT32 palrsvd;   // number of static entries in palette
   12      INT32 pages;     // pages supported
   13      float refresh;   // refresh rate in Hz
   14      INT32 winnt;     // 0 for 9x/Me, 1 for NT, 2 for 2000, 3 for XP
   15 } DISPLAYINFO;

If refresh cannot be measured, the "refresh" field will contain a value less than 40.

Parameters

di	Pointer to `DISPLAYINFO` structure to fill.

This is an optional function to get information on video driver and current mode use this to determine if in proper mode for experiment.

Parameters

[out] di A valid pointer to DISPLAYINFO is passed in to return values.

Remarks: The prototype of this function can be changed to match one's need or if it is not necessary, one can choose not to implement this function also.

HDC get_window_dc ( void )

Gets a display context to draw on the page. This is a static DC, so all settings from your last use are preserved.

INT16 init_expt_graphics	(	HWND	hwnd,
		DISPLAYINFO *	info
	)

You must always create a borderless, full-screen window for your experiment. This function registers the window with EXPTSPPT so it may be used for calibration and drift correction. The window should not be destroyed until it is released with close_expt_graphics(). This window will be subclassed (some messages intercepted) during calibration and drift correction.

Parameters

hwnd	Handle of window that is to be used for calibration and drift correction. This should be a borderless, full-screen window. If your language can't give you a window handle, use `NULL` and the topmost window will be detected.
info	`NULL` or pointer to a `DISPLAYINFO` structure to fill with display mode data.

Returns: 0 if success, -1 if error occurred internally.

void initialize_gc_window	(	int	wwidth,
		int	wheight,
		HBITMAP	window_bitmap,
		HBITMAP	background_bitmap,
		HWND	window,
		RECT	display_rect,
		int	is_mask,
		int	deadband
	)

To initialize a gaze contengent window.
Initial setup of gaze-contingent window before drawing it.
Sets size of window, and whether it is a foveal mask.
If height or width is -1, the window will be a bar covering the display.

Parameters

wwidth
wheight
window_bitmap
background_bitmap
window	The window to display in.
display_rect	Area of display in window.
is_mask
deadband	Sets number of pixels of anti-jitter applied.

void redraw_gc_window	(	int	x,
		int	y
	)

Set the location of the gaze window to this new position. The first time window is drawn, the background outside the window will be filled in too. If x or y is MISSING_DATA (defined in eyelink.h), window is hidden.

Parameters

x	X location.
y	Y location.

INT16 release_window_dc ( HDC hdc )

Release the page DC

INT16 CALLTYPE set_cal_sound_hook	(	INT16()(INT16 error)	hookfn,
		INT16	options
	)

To modify the behaviour of cal_sound() function.

Parameters

hookfn	Function to replace `cal_sound()`.
options	For future use.

void set_cal_sounds	(	char *	ontarget,
		char *	ongood,
		char *	onbad
	)

Selects the sounds to be played during do_tracker_setup(), including calibration, validation and drift correction. These events are the display or movement of the target, successful conclusion of calibration or good validation, and failure or interruption of calibration or validation.

Remarks: If no sound card is installed, the sounds are produced as "beeps" from the PC speaker. Otherwise, sounds can be selected by passing a string. If the string is "" (empty), the default sounds are played. If the string is "off", no sound will be played for that event. Otherwise, the string should be the name of a .WAV file to play.

Parameters

ontarget	Sets sound to play when target moves.
ongood	Sets sound to play on successful operation.
onbad	Sets sound to play on failure or interruption.

Example: See do_tracker_setup()

See also: do_tracker_setup() and set_dcorr_sounds()

void set_calibration_colors	(	COLORREF	fg,
		COLORREF	bg
	)

Passes the colors of the display background and fixation target to the EXPTSPPT library. During calibration, camera image display, and drift correction, the display background should match the brightness of the experimental stimuli as closely as possible, in order to maximize tracking accuracy. This function passes the colors of the display background and fixation target to the EXPTSPPT library. This also prevents flickering of the display at the beginning and end of drift correction.

Parameters

fg	Color used for drawing calibration target.
bg	Color used for drawing calibration background.

Example: See do_tracker_setup()

See also: do_tracker_setup()

int set_calibration_monitor_index ( int monitor_index )

Set calibration monitor index

Parameters

monitor_index of the monitor Eg. 1 is main monitor When the monitor index is set, that index will be used to get the display information.

Returns: New value of calibration monitor index.

INT16 set_camera_image_position	(	INT16	left,
		INT16	top,
		INT16	right,
		INT16	bottom
	)

To adjust camera image position. By default the camera is placed at the centre of the screen.

Parameters

left	Left position.
top	Top position.
right	Right position.
bottom	Bottom position.

void set_camera_setup_colors	(	COLORREF	sc,
		COLORREF	pbc,
		COLORREF	tc
	)

Passes the colors of the search area, cross-hair and text

Parameters

sc	Color used for drawing search area. (default is RED)
pbc	Color used for drawing pupil box. (default is Green)
tc	Color used for drawing text instructions (default is Blak).

Example: See do_tracker_setup()

See also: do_tracker_setup()

INT16 set_clear_cal_display_hook	(	INT16(*)(HDC hdc)	hookfn,
		INT16	options
	)

To modify the behaviour of clear_cal_display() function.

Parameters

hookfn	Function to replace `clear_cal_display()`.
options	For future use.

void set_dcorr_sounds	(	char *	ontarget,
		char *	ongood,
		char *	onbad
	)

Selects the sounds to be played during do_drift_correct(). These events are the display or movement of the target, successful conclusion of drift correction, and pressing the 'ESC' key to start the Setup menu.

Remarks: If no sound card is installed, the sounds are produced as "beeps" from the PC speaker. Otherwise, sounds can be selected by passing a string. If the string is "" (empty), the default sounds are played. If the string is "off", no sound will be played for that event. Otherwise, the string should be the name of a .WAV file to play.

Parameters

ontarget	Sets sound to play when target moves.
ongood	Sets sound to play on successful operation.
onbad	Sets sound to play on failure or interruption.

Example: See do_tracker_setup()

See also: do_tracker_setup() and set_cal_sounds()

INT16 CALLTYPE set_draw_cal_target_hook	(	INT16()(HDC hdc, INT16 x, INT16 *y)	hookfn,
		INT16	options
	)

Parameters

hookfn	Function to replace `draw_cal_target()`.
options	For future use.

INT16 set_draw_image_line_hook	(	INT16()(INT16 width, INT16 line, INT16 totlines, byte pixels)	hookfn,
		INT16	options
	)

To modify the behaviour of draw_image_line() function.

Parameters

hookfn	Function to replace `draw_image_line()`.
options	For future use.

INT16 CALLTYPE set_erase_cal_target_hook	(	INT16(*)(HDC hdc)	hookfn,
		INT16	options
	)

To modify the behaviour of erase_cal_target() function.

Parameters

hookfn	Function to replace `erase_cal_target()`.
options	For future use.

INT16 set_exit_cal_display_hook	(	INT16(*)(void)	hookfn,
		INT16	options
	)

To modify the behaviour of exit_cal_display() function.

Parameters

hookfn	Function to replace `exit_cal_display()`.
options	For future use.

INT16 set_exit_image_display_hook	(	INT16(*)(void)	hookfn,
		INT16	options
	)

To modify the behaviour of exit_image_display() function.

Parameters

hookfn	Function to replace `exit_image_display()`.
options	For future use.

INT16 set_image_title_hook	(	INT16()(INT16 threshold, char cam_name)	hookfn,
		INT16	options
	)

To modify the behaviour of image_title() function.

Parameters

hookfn	Function to replace `image_title()`.
options	For future use.

INT16 set_record_abort_hide_hook	(	INT16(*)(void)	hookfn,
		INT16	options
	)

To modify the behaviour of record_abort_hide() function.

Parameters

hookfn	Function to replace `record_abort_hide()`.
options	For future use.

INT16 set_set_image_palette_hook	(	INT16(*)(INT16 ncolors, byte r[], byte g[], byte b[])	hookfn,
		INT16	options
	)

To modify the behaviour of set_image_palette() function.

Parameters

hookfn	Function to replace `set_image_palette()`.
options	For future use.

INT16 set_setup_cal_display_hook	(	INT16(*)(void)	hookfn,
		INT16	options
	)

To modify the behaviour of setup_cal_display() function.

Parameters

hookfn	Function to replace `setup_cal_display()`.
options	For future use.

INT16 set_setup_image_display_hook	(	INT16(*)(INT16 width, INT16 height)	hookfn,
		INT16	options
	)

To modify the behaviour of setup_image_display() function.

Parameters

hookfn	Function to replace `setup_image_display()`.
options	For future use.

void set_target_size	(	UINT16	diameter,
		UINT16	holesize
	)

The standard calibration and drift correction target is a disk (for peripheral delectability) with a central "hole" target (for accurate fixation). The sizes of these features may be set with this function.

Parameters

diameter	Size of outer disk, in pixels.
holesize	Size of central feature. If `<holesize>` is `0`, no central feature will be drawn.

Example: See do_tracker_setup()

See also: do_tracker_setup()

void wait_for_drawing ( HWND hwnd )

Forces start of drawing, waits for drawing to finish hwnd may be NULL for all displays together

Parameters

hwnd	Handle to the window.

void wait_for_video_refresh ( void )

This function will not return until the current refresh of the monitor has completed (at the start of vertical retrace). This can be used to synchronize drawing to the scanning out of the display, and to determine when a stimulus was first seen by the subject. The DriverLinx PortIO driver must be installed for this function to work.

Remarks: This is function is only applicable for the GDI version.

Variable Documentation

dispinfo

DEPRECATED

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation