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The C Programmer’s Guide to the Mosaic HandheldTable of ContentsPART 1 GETTING STARTED Introduction. How to Use This Manual Chapter 1: Getting to Know Your Handheld Instrument Chapter 2: Powering Your Handheld PART 2 PROGRAMMING THE MOSAIC HANDHELD Chapter 4: The IDE: Writing, Compiling, Downloading and Debugging Programs Chapter 5: Making Effective Use of Memory Chapter 6: Real Time Programming Chapter 7: Failure and Run-Time Error Recovery Chapter 8: Programming the Graphical User Interface PART 3 COMMUNICATIONS, MEASUREMENT, AND CONTROL Chapter 9: Digital and Timer-Controlled I/O Chapter 11: Serial Communications Chapter 12: The Battery-Backed Real Time Clock Chapter 13: Customizing the Handheld's I/O PART 4: REFERENCE DATA |
Glossary A B C DF G H I K LM N P R S T UVWXY UNSET
Type Constant Return Value Long Description The name of a value of the PEN_TYPE property of the GUI_PEN object. When the PEN_TYPE property of the GUI_PEN object is UNSET, the Draw method erases a point or a line from a screen. Usage Set_Property(GUI_PEN, PEN_TYPE, UNSET);
Library library.c
See Also SET void Un_Load ( uint screen_reference, uint object_reference, uint x, uint y )
Type Function Input Parameters screen_reference A 16 bit variable that refers to the screen object that the object specified by object_reference will be unloaded from. object_reference A 16 bit variable that refers to the object that will be unloaded from the screen. x_coordinate A 16 bit number that specifies the location of the left edge of the object in the horizontal direction relative to the left edge of the screen. The x-coordinate must be the same coordinate used with the Load method. y_coordinate A 16 bit number that specifies the location of the top of the object in the vertical direction relative to the top edge of the screen. The y-coordinate must be the same coordinate used with the Load method. Description A method that unloads an object from a screen and erases the image of the object from the screen. The x and y coordinates must be the same x and y coordinates that were used to load the object into the screen. Errors include: INVALID_SCREEN, INVALID_OBJECT, X_OUT_OF_RANGE, and Y_OUT_OF_RANGE. Usage Un_Load(GUI_SCREEN0, graphicStop, 0, 0);
Library library.c
See Also Load VERTICAL_SNAP_TO_GRID
Type Constant Return Value Integer Description The name of a property of the GUI Toolkit that aligns objects loaded onto a screen onto an 8 pixel vertical grid. Possible contents of this property are the booleans GUI_TRUE and GUI_FALSE. VERTICAL_SNAP_TO_GRID is initialized to GUI_FALSE by Initialize_GUI. Usage Set_Property(GUI_TOOLKIT, VERTICAL_SNAP_TO_GRID, GUI_FALSE);
Library library.c
See Also HORIZONTAL_SNAP_TO_GRID VISIBLE
Type Constant Return Value Integer Description The name of a screen property that indicates if the screen is shown on the display. Only one screen can be visible at a time. Possible contents of this property are the booleans GUI_TRUE and GUI_FALSE. GUI_SCREEN0 is the visible screen after Initialize_GUI is called. Usage Set_Property(GUI_SCREEN1, VISIBLE, GUI_TRUE);
Library library.c
WIDTH_IN_PIXELS
Type Constant Return Value Integer Description The name of a property that contains the width in pixels of an object. Usage longWidth = Get_Property(GUI_DISPLAY, WIDTH_IN_PIXELS);
Library library.c
See Also HEIGHT_IN_PIXELS WIDTH_OUT_OF_RANGE
Type Constant Return Value Integer Description The name of an error that indicates the width passed to Set_Property when changing the width of a plot, creates a plot wider than the screen. If the error occurs, Set_Property recovers from the error by setting the width of the plot equal to the width of the screen. An unchecked error occurs if a plot that has already been loaded into a screen is resized beyond the width of the screen. Usage Set_Property(plotVoltage, WIDTH_IN_PIXELS, (ulong) 400); If(Read_Error() == WIDTH_OUT_OF_RANGE) { printf(“Width of plot is greater than width of screen.\n”); Clear_Error(); }
Library library.c
X_OUT_OF_RANGE
Type Constant Return Value Integer Description The name of an error that indicates that the x-coordinate passed to Draw is greater than the width of the screen or the x-coordinate passed to Load or Un_Load plus the width of the object is greater than the width of the screen. If the error occurs, the method recovers from the error by setting the x-coordinate to the largest possible value. For the Draw method, the x-coordinate is set to 127. For the Load and Un_Load methods, the x-coordinate is set to 127 minus the width of the object. Usage Draw( 400, 15 ); If(Read_Error() == X_OUT_OF_RANGE) { printf(“X is greater than the width of the screen.\n”); Clear_Error(); }
Library library.c
Y_OUT_OF_RANGE
Type Constant Return Value Integer Description The name of an error that indicates that the y-coordinate passed to Draw is greater than the height of the screen or the y-coordinate passed to Load or Un_Load plus the height of the object is greater than the height of the screen. If the error occurs, the method recovers from the error by setting the y-coordinate to the largest possible value. For the Draw method, the y-coordinate is set to 127. For the Load and Un_Load methods, the y-coordinate is set to 127 minus the height of the object. Usage Draw( 40, 300 ); If(Read_Error() == Y_OUT_OF_RANGE) { printf(“Y is greater than the height of the screen.\n”); Clear_Error(); }
Library library.c
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