The Cdk marquee widget creates a pop-up marquee window. The following are
functions which create or manipulate the Cdk marquee widget.
AVAILABLE FUNCTIONS
CDKMARQUEE *newCDKMarquee (CDKSCREEN *screen, int xpos, int ypos, int fieldWidth, boolean shadow);
This function creates a pointer to a marquee widget. The screen parameter
is the screen you wish this widget to be placed in. The parameter xpos
controls the placement of the object along the horizontal axis. This parameter
can accept an integer value or one of the pre-defined values of LEFT,
RIGHT, and CENTER. The parameter ypos controls the placement
of the object along the vertical axis. This parameter can accept an integer
value or one of the pre-defined values of TOP, BOTTOM, and CENTER.
The width parameter state how wide the field is to be. If you provide a
value of zero for the width, the widget will assume the full width of the
screen. If a negative value is provided, then the widget will assume the
full width of the screen minus the value provided. The shadow parameter
accepts a boolean value to turn the shadow on or off around this widget. If
the widget could not be created then a NULL pointer is returned.
int activateCDKMarquee (CDKMARQUEE *marquee, char *message, int delay, int repeat, boolean box);
This function activates the marquee widget. The marquee parameter is a
pointer to a defined marquee widget. The delay parameter states how long
to wait between movements. This value is highly dependent on each machine the
program runs on. The repeat value tells the marquee widget how many times
to display the given message. The box option draws the widget with or
without a box. This function returns -1 if the message passed is NULL,
0 otherwise.
This sets the background color of the widget. The parameter color
is in the format of the Cdk format strings. To get more information look
at the cdk_display manual page.
void moveCDKMarquee (CDKMARQUEE *marquee, int xpos, int ypos, boolean relative, boolean refresh);
This function moves the given widget to the given position. The parameters
xpos and ypos is the new position of the widget. The parameter
xpos can accept an integer value or one of the pre-defined values of
TOP, BOTTOM, and CENTER. The parameter ypos can
accept an integer value or one of the pre-defined values of LEFT,
RIGHT, and CENTER. The parameter relative states whether
the xpos/ypos pair is a relative move or an absolute move. For
example if xpos = 1 and ypos = 2 and relative = TRUE,
then the widget would move one row down and two columns right. If the value
of relative was FALSE then the widget would move to the position
(1,2). Do not use the values of TOP, BOTTOM, LEFT,
RIGHT, or CENTER when relative = TRUE. (wierd things
may happen). The final parameter refresh is a boolean value which
states whether the widget will get refreshed after the move or not.
void positionCDKMarquee (CDKMARQUEE *marquee);
This function allows the user to move the widget around the screen via the
cursor/keypad keys. The following key bindings can be used to move the
widget around the screen.
Key Bindings
Key Action
Up Arrow Moves the widget up one line.
Down Arrow Moves the widget down one line.
Left Arrow Moves the widget left one column
Right Arrow Moves the widget right one column
Keypad-1 Moves the widget down one line
and left one column.
Keypad-2 Moves the widget down one line.
Keypad-3 Moves the widget down one line
and right one column.
Keypad-4 Moves the widget left one column
Keypad-5 Centers the widget both vertically
and horizontally.
Keypad-6 Moves the widget right one column
Keypad-7 Moves the widget up one line
and left one column.
Keypad-8 Moves the widget up one line.
Keypad-9 Moves the widget up one line
and right one column.
t Moves the widget to the top of the screen.
b Moves the widget to the bottom of the screen.
l Moves the widget to the left of the screen.
r Moves the widget to the right of the screen.
c Centers the widget between the left and
right of the window.
C Centers the widget between the top and
bottom of the window.
Escape Returns the widget to it's original position.
Return Exits the function and leaves the widget
where it was.
Keypad means that if the keyboard you are using has a keypad, then the
Num-Lock light has to be on in order to use the keys as listed. (The
numeric keys at the top of the keyboard will work as well.)