Function dialog_ex_set_header 

pub unsafe extern "C" fn dialog_ex_set_header(
    dialog_ex: *mut DialogEx,
    text: *const c_char,
    x: u8,
    y: u8,
    horizontal: Align,
    vertical: Align,
)

Set dialog header text

If text is null, dialog header will not be rendered

Arguments

• dialog_ex - DialogEx instance
• text - text to be shown, can be multiline
• x - x position
• y - y position
• horizontal - horizontal text alignment
• vertical - vertical text alignment