FORM_ADD_BUTTON

Adds a button item to a form.

void FORM_ADD_BUTTON(formName name, buttonName, int x, int y, const char* pszText, char cShortcut, EVENT_FNC event, uint32 nFlag, const char* pszHelp, int nIDVal = 0);

Parameters

• formName - name of the form, this much match the name of the FORM_INIT
• buttonName - name of the input, this must be unique within this form
• x - X coordinate (0 - 639)
• y - Y coordinate (0 - 479)
• pszText - Text to display in button
• cShortcut - Shortcut key to press to activate button
• event - Event to be called when button is activated, may be NULL to not call event
• nFlag - Flags such as FORM_UINT8_SEL to show selection data
• pszHelp - Help text to be displayed at the bottom of screen when field is selected
• nIDVal - ID that may be used for return value when button is pressed if event function is not used

Return Value

This function does not return any value

Remarks

Examples

void MenuScreen(void)
{
    FORM_INIT(Menu, EventMenuShow, NULL, NULL, NULL, nFormFlgShowHelp);
    FORM_ADD_BUTTON(Menu, SetDateTime, 0, 50, "1. Set Date/Time", '1', EventDateTime, FORM_BUTTON);
    FORM_ADD_BUTTON(Menu, ViewAccum, 0, 80, "2. View Accumulators", '2', EventViewAccum, FORM_BUTTON);

    FORM_SHOW(Menu);
    FORM_RUN(Menu);
    FORM_HIDE(Menu);
}

EVENT(MenuShow)
{
    ClearLCD();
    DisplayText(0, 0, "Menu Screen");
    return 0;
}

EVENT(SetDateTime)
{
    // Hide the parent form
    IN_EVENT_HIDE_FORM;

    DateTimeScreen();

    // Show the parent form
    IN_EVENT_SHOW_FORM;

    return 0;
}

EVENT(ViewAccum)
{
    // Hide the parent form
    IN_EVENT_HIDE_FORM;

    ViewAccumScreen();

    // Show the parent form
    IN_EVENT_SHOW_FORM;

    return 0;
}

See Also

• FORM_ADD_INPUT
• FORM_ADD_BUTTON
• FORM_SHOW
• FORM_RUN