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Showing content from http://technical.swissmicros.com/dmcp/doc/DMCP-ifc-html/group__dlg__help.html below:

DMCP interface: Help Screen

Help screen. More...

#define  HELP_INDEX   "/HELP/index.htm"   Default help filename used by run_help()
 

Help screen.

Calculator system contains simplified web browser with very limited abilities. To comply try mainly to limit plain text blocks (i.e. text without html elements) below 200 characters.

Use following file as reference what is suported:

http://technical.swissmicros.com/dm42/fat/HELP/dm42help.htm

Note that the CSS section at the beginning is useful for displaying in normal browsers only. It isn't interpreted by simplified browser (it is just skipped).

◆ user_style_fn_t typedef void user_style_fn_t(char *class_attr, disp_stat_t *ds)

Prototype for user style callback function.

Parameters
class_attr Pointer to class attribute ds Current display state
◆ run_help()

Starts default help screen.

Starts help screen with default file "/HELP/index.htm".

◆ run_help_file() void run_help_file ( const char * help_file )

Starts help screen.

Starts help screen with given file.

Parameters
◆ run_help_file_style() void run_help_file_style ( const char * help_file, user_style_fn_t * user_style_fn )

Starts help screen.

Starts help screen with given file and user style callback.

Each time when help browser finds unsupported 'class' attribute calls user_style_fn with pointers to class attribute and current display state.

User function can then change current display state to reflect user font style.

Parameters
help_file Help file name user_style_fn User style callback.

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