Table of Contents

General stuff

• A: IMPORTANT !Read this first!
• B1: Important instructions for previous users of GraphLib.
• B: Copyright information.
• C: Installation instructions
• D: Using GraphLib in your application
• E: Understanding this manual and API descriptions.
• F: Programming tips.
• G: What is new in this version?
• I: Unsupported features at this point.
• J: Improvements in next release.
• K: Support, Upgrades, Bug Fixes and feedback
• L: I like it, where do I buy?

Functions

• DrawRectangle [internal UTILITY]
• GetNewStr [UTILITY]:returns a Char * after allocating memory
• GetRandomNumberForScreen [UTILITY]:returns a number between 0 and n
• RGB [OPTIONAL]:Returns the color index for given r,g,b values
• drawThermoGraph [OPTIONAL]:Draws a "thermometer" type graph with color shade
• grLibDrawCircle [INTERNAL]:Draws a circle with the given radius, center points
• grLibDrawGraph [MANDATORY]:This function draws the graph.
• grLibDrawGraphFrame [OPTIONAL] Draws a frame on the screen based on coordinates in graph struct.
• grLibDrawGraphGrids [OPTIONAL]:This function draws the grids for the graph and associated text.
• grLibDrawGraphLegends [OPTIONAL]:This function draws the legends below the graph.
• grLibDrawGraphTitle [OPTIONAL]:Prints a graph title.
• grLibDrawNumber [UTILITY]:Draws a 'Number' on a coordinate specified on the screen.
• grLibDrawPieGraph [INTERNAL]:Draws the actual pie slices
• grLibDrawRectangle [UTILITY] Draws a rectangle on the screen based on coordinates.
• grLibEraseGraphFrame [OPTIONAL] Erases the drawn Graph
• grLibGetUserValueFromPenPoint [OPTIONAL]:returns graph data for a point where the stylus taps the screen (if a data point exists there)
  NOTE: the return value must be typecast to the proper user data as was initially input by the user.
• grLibInitializeGraphStruct [MANDATORY]:default initialization.
• grLibInputGraphData [MANDATORY]:fills data values to the graph data structure and ensures faulty data is not input.
• grLibLineFill [INTERNAL ]: Enhances a line graph by filling the region below the lines.
• grLibReleaseResources [MANDATORY]:Releases memory resources used by graph data structure
  NOTE: This must be called to "clean up the mess" once done with graph and the user presses a button/menu etc.
• grLibSetGraphParams [MANDATORY if not using default initialization values] sets desired graph data structure initialization values.
• grLibSetMaxMinScales [MANDATORY if not using default initialization] sets the minimum and maximum X and Y scales.
• grLibSetPieGraphParams [MANDATORY if using Pie Graphs]: Set the basic parameters for Pie graphs.
• grLibSetUserValue [OPTIONAL]:Sets the user defined information for a data point