Slider/Scroll Bar Functions

 

Name 

Description 

 

SldCreate 

This function creates a SLIDER object with the parameters given. Depending on the SLD_SCROLLBAR state bit slider or scrollbar mode is set. If SLD_SCROLLBAR is set, mode is scrollbar; if not set mode is slider. It automatically attaches the new object into a global linked list of objects and returns the address of the object. 

 

SldDraw 

This function renders the object on the screen using the current parameter settings. Location of the object is determined by the left, top, right and bottom parameters. The colors used are dependent on the state of the object.
When rendering objects of the same type, each object must be rendered completely before the rendering of the next object is started. This is to avoid incomplete object rendering. 

 

SldSetPage 

This sets the page size of the object. Page size defines the delta change of the thumb position when incremented via SldIncPos() or decremented via SldDecPos(). Page size minimum value is 1. Maximum value is range/2. 

 

SldSetPos 

This function sets the position of the slider thumb. Value should be in the set range inclusive. Object must be redrawn to reflect the change. 

 

SldSetRange 

This sets the range of the thumb. If this field is changed Object must be completely redrawn to reflect the change. 

 

SldMsgDefault 

This function performs the actual state change based on the translated message given. The following state changes are supported:  

 

SldTranslateMsg 

This function evaluates the message from a user if the message will affect the object or not. The table below enumerates the translated messages for each event of the touch screen and keyboard inputs.