AN3128 datasheet(45/105 Pages) STMICROELECTRONICS

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AN3128

Multi-input embedded GUI library firmware

Doc ID 16918 Rev 5

45/105

4.1.23

Get_SlidebarValue API global function

Table 28 describes the Get_SlidebarValue function:

Example:

/* Declares and initiates a Page Object */

GL_Page_TypeDef page1;

Create_PageObj( &page1 );

/* Declares and initiates a Slidebar Object and add it with specified coordinates to

a Page Object */

GL_PageControls_TypeDef* MySlidebar = NewSlidebar("MySlidebar", "Volume",

GL_Horizontal, MySlidebarFunc);

AddPageControlObj((uint16_t)((LCD_Width/10)*7),(uint8_t)((LCD_Height/9)*3),

MySlidebar,&page1);

...

uint8_t slidebarValue = Get_SlidebarValue(&page1, "MySlidebar" );

Figure 14, 15, 16, show, in detail, the slidebar object properties and methods which the final

application can use to interact with.

Table 28.

Get_SlidebarValue API function

Name

Description

Function name

Get_SlidebarValue

Function prototype

uint8_t Get_SlidebarValue (GL_Page_TypeDef* pPage, char* objName)

Behavior description

Return the current value of cursor position in a slidebar object

Input parameter {x}

*pPage: pointer to page structure

objName: name of the object

Output parameter {x}

None

Return value

The cursor position value (0-100 percentage)

Required preconditions

None

Called functions

No API/HAL layer functions

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