cdk_label(3) cdk_label(3)
NAME
newCDKLabel, setCDKLabel, setCDKLabelMessage, getCDKLa- belMessage, setCDKLabelBox, getCDKLabelBox, setCDKLa- belULChar, setCDKLabelURChar, setCDKLabelLLChar, setCDKLa- belLRChar, setCDKLabelVerticalChar, setCDKLabelHorizon- talChar, setCDKLabelBoxAttribute, setCDKLabelBackground- Color, drawCDKLabel, eraseCDKLabel, destroyCDKLabel, wait- CDKLabel - Creates a managed curses label widget.
SYNOPSIS
cc [ flag ... ] file ... -lcdk [ library ... ] #include <cdk.h> CDKLABEL *newCDKLabel (CDKSCREEN *cdkscreen, int xpos, int ypos, char **message, int messageLines, boolean box, boolean shadow); void setCDKLabel (CDKLABEL *label, char **message, int messageLines, boolean box); void setCDKLabelMessage (CDKLABEL *label, char **message, int messageLines); chtype **getCDKLabelMessage (CDKLABEL *label int *message- Lines); void setCDKLabelBox (CDKLABEL *label, boolean box); boolean getCDKLabelBox (CDKLABEL *label); void setCDKLabelULChar (CDKLABEL *,label, chtype charac- ter); void setCDKLabelURChar (CDKLABEL *,label, chtype charac- ter); void setCDKLabelLLChar (CDKLABEL *,label, chtype charac- ter); void setCDKLabelLRChar (CDKLABEL *,label, chtype charac- ter); void setCDKLabelVerticalChar (CDKLABEL *,label, chtype character); void setCDKLabelHorizontalChar (CDKLABEL *,label, chtype character); void setCDKLabelBoxAttribute (CDKLABEL *,label, chtype character); void setCDKLabelBackgroundColor (CDKLABEL *,label, char * color); 24 April 1997 1 cdk_label(3) cdk_label(3) void moveCDKLabel (CDKLABEL *label, int box, int box, boolean relative, boolean refresh); void positionCDKLabel (CDKLABEL *label); void drawCDKLabel (CDKLABEL *label, boolean box); void eraseCDKLabel (CDKLABEL *label); void destroyCDKLabel (CDKLABEL *label); void waitCDKLabel (CDKLABEL *label, char key);
DESCRIPTION
The Cdk label widget creates a pop-up label window. The following are functions which create or manipulate the Cdk label widget.
AVAILABLE FUNCTIONS
CDKLABEL *newCDKLabel (CDKSCREEN *screen, int xpos, int ypos, char **message, int messageLines, boolean box, boolean shadow); This function creates a pointer to a label 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 message parameter is the message to be displayed in the window. The message can accept the full compliment of the standard Cdk display format commands. To learn more about this read the cdk_display manual page. The parameter rows is the number of message rows that were passed in on the message parameter. The box parameter states whether the widget will be drawn with a box around it or not. 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. void setCDKLabel (CDKLABEL *label, char **message, int messageLines, boolean box); This function allows the user to change the contents of the label widget. The parameters are the same as the newCDKLabel. void setCDKLabelMessage (CDKLABEL *label, char **message, int messageLines); This sets the contents of the label widget. 24 April 1997 2 cdk_label(3) cdk_label(3) chtype **getCDKLabelMessage (CDKLABEL *label, int *mes- sageLines); This returns the contents of the label widget. The parameter messageLines is an integer pointer which will be given the number of messageLines passed back. void setCDKLabelBox (CDKLABEL *label, boolean boxWidget); This sets whether or not the widget will be draw with a box around it. boolean getCDKLabelBox (CDKLABEL *label); This returns whether or not the widget will be drawn with a box around it. void setCDKLabelULChar (CDKLABEL *label, chtype charac- ter); This function sets the upper left hand corner of the widgets box to the given character. void setCDKLabelURChar (CDKLABEL *label, chtype charac- ter); This function sets the upper right hand corner of the widgets box to the given character. void setCDKLabelLLChar (CDKLABEL *label, chtype charac- ter); This function sets the lower left hand corner of the widgets box to the given character. void setCDKLabelLRChar (CDKLABEL *label, chtype charac- ter); This function sets the lower right hand corner of the widgets box to the given character. void setCDKLabelVerticalChar (CDKLABEL *label, chtype character); This function sets the vertical drawing character for the box to the given character. void setCDKLabelHorizontalChar (CDKLABEL *label, chtype character); This function sets the horizontal drawing character for the box to the given character. void setCDKLabelBoxAttribute (CDKLABEL *label, chtype attribute); This function sets the attribute of the box. void setCDKLabelBackgroundColor (CDKLABEL *label, char *color); 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_dis- play manual page. 24 April 1997 3 cdk_label(3) cdk_label(3) void moveCDKLabel (CDKLABEL *label, int xpos, int ypos, boolean relative, boolean refresh); This function moves the given widget to the given posi- tion. 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. (weird 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 positionCDKLabel (CDKLABEL *label); 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. 24 April 1997 4 cdk_label(3) cdk_label(3) 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.) void drawCDKLabel (CDKLABEL *label, boolean box); This function draws the label widget on the screen. The box option draws the widget with or without a box. void eraseCDKLabel (CDKLABEL *label); This function removes the widget from the screen. This does NOT destroy the widget. void destroyCDKLabel (CDKLABEL *label); This function removes the widget from the screen and frees up any memory the object may be using. void waitCDKLabel (CDKLABEL *label, chtype key); This function will wait for a user to press a key, then carry on. The label parameter is the pointer to a label widget, while key is the key to wait for. If no specific key is desired then pass in (char )NULL.
SEE ALSO
cdk(3), cdk_binding(3), cdk_display(3), cdk_screen(3)
NOTES
The header file <cdk.h> automatically includes the header files <curses.h>, <stdlib.h>, <string.h>, <ctype.h>, <unistd.h>, <dirent.h>, <time.h>, <errno.h>, <pwd.h>, <grp.h>, <sys/stat.h>, and <sys/types.h>. The <curses.h> header file includes <stdio.h> and <unctrl.h>. If you have Ncurses installed on your machine add -DNCURSES to the compile line to include the Ncurses header files instead. 24 April 1997 5
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