AN3128 datasheet(39/105 Pages) STMICROELECTRONICS

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AN3128

Multi-input embedded GUI library firmware

Doc ID 16918 Rev 5

39/105

Example:

/* Declares and initiates a Page Object */

GL_Page_TypeDef page1;

Create_PageObj( &page1 );

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

Page Object */

GL_PageControls_TypeDef* pageLabel = NewLabel("pageLabel", "Graphic Library",

GL_HORIZONTAL, GL_FONT_BIG, GL_Blue);

AddPageControlObj((uint16_t)((LCD_Width/11)*9), (uint8_t)(LCD_Height/11), pageLabel,

&page1);

/* Modify the label in a "Label Object" */

Set_Label(&page1, "pageLabel", "Graphic Library New")

Figure 14, 15, 16, show, in detail, the Label Object properties and methods which the final

application can use to interact with.

4.1.17

Get_Label API global function

Table 22 describes the Get_Label function:

Input parameter {x}

pPage: pointer to page structure

objName: name of the object

Label: text on a Label Object

Output parameter {x}

None

Return value

GL_OK if successful, GL_ERROR otherwise

Required preconditions None

Called functions

No API/HAL layer functions

Table 21.

Set_Label API function (continued)

Name

Description

Table 22.

Get_Label API function

Name

Description

Function name

Get_Label

Function prototype

GL_ErrStatus Get_Label (GL_Page_TypeDef* pPage, char* objName,

char* Label)

Behavior description

Return the Label of a Label Object

Input parameter {x}

*pPage: pointer to page structure

objName: name of the object

Output parameter {x}

Label: this is the variable where the Label of a Label Object is copied into

Return value

GL_OK if successful, GL_ERROR otherwise

Required preconditions None

Called functions

No API/HAL layer functions

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