How to Change Hot-Spot Color at Run Time in MediaView Titles

MORE INFORMATION

A MediaView title can have several style sheets. Style sheets are like attributes (font style, color, paragraph style, tabs, borders, and so on) to a body of text. To redefine these attributes at run time, you need to define a style sheet for them.

MediaView titles are compiled from .RTF (rich-text format) files. The style of a hot spot in the .RTF file sequence usually looks like this: This is what you'd type to hard code the .RTF file.

If you edit the .RTF file using Microsoft Word for Windows, you'd select the hot spot text. Then using the Format menu, give the highlighted text a property of double underline and a hidden property for "hypertextlink."

Step-by-Step Procedure

You can also define a style sheet for a hot spot by following these steps:

1. Choose Style from the Format menu to create a new style for the hot spot.
2. Click New. In the Name field, type a name for your style such as Hot spot.
3. In the Style Type combo box, select character instead of paragraph.
4. Define the properties of a user-defined style. Click the Format button. Then choose Font.
5. Select the initial color, size, and of course double or single underline for your hot spot.
6. Apply the style to your title:
   
   
   1. Select the text.
   2. Choose Style from the Format menu.
   3. Select your style from the alphabetized list of styles.
   4. Click the Apply button.
7. Give the context jump the regular hidden property.

All that you've done is give your hot spot text a name that MediaView can later use to redefine.

Once your title is compiled and converted to an .M13 file. You can use the fMVGetCharStyle() API to retrieve information on a character style sheet and you can change the attributes of the style sheet by using fMVSetCharStyle(). Example and documentation and other API calls for MediaView can be found on MVDOC.M13.

Example .RTF File

{\rtf1\ansi \deff2\deflang1033

{\fonttbl
{\f1\fswiss\fcharset0\fprq2 Helv;}
{\f2\fswiss\fcharset0\fprq2 Arial;}
}

**** standard color definition *****

{\colortbl;\red0\green0\blue0;\red0\green0\blue255;\red0\green255\blue 55;
\red0\green255\blue0;
\red255\green0\blue255;\red255\green0\blue0;\red255\green255\blue0;
\re 255\green
255\blue255;\red0\green0\blue128;\red0\green128\blue128;\red0
green128\blue0;\red128\green0\blue128;\red128\green0\blue0;\red128\gre
n128\blue0;\red128\green128\blue128;
\red192\green192\blue192;
}

******* Notice the rtf code for "style sheet" ******

{\stylesheet
{\f2\fs20 \snext0 Normal;}
{\*\cs10 \additive Default Paragraph Font;}
{\*\cs17 \additive\f1\fs20\cf11\ul \sbasedon10 PopupText;}
{\*\cs18 \additive\f1\fs20 \sbasedon10 ProperNames;}
}
\pard\plain \li108 \f2\fs20

#{\footnote table}
${\footnote Table of Contents}

{
\par
\par
\fs24\b  TABLE OF CONTENTS
}

#{\footnote heroes}
${\footnote Heroes and Heroines}
+{\footnote Heroes}
K{\footnote 0:quest}
K{\footnote h:mythology}
{\b\fs28  HEROES AND HEROINES\par}
\par \pard \li108\sb60\sa60 The heroes of mythology journey on our
behalf. They dare to enter the dark
      .
      .
      .
called to adventure by visions of {\cs18 Holy Grails}, **** here's
the style sheet being used****

\par Although he was born of human parentage, {\cs18 Sir Lancelot}
was reared by the same {\cs18 Lady of the Lake} who gave ...