Create Fallback Fonts Collection

Instances of FontFallBackRule class can be organized into FontFallBackRulesCollection, that implements FontFallBackRulesCollection class. It is possible to add or remove rules from the collection.

Then this collection may be assigned to FontFallBackRulesCollection method of the FontsManager class. FontsManager controls fonts across the presentation. Read more About FontsManager and FontsLoader.

Each Presentation has a getFontsManager method with its own instance of the FontsManager class.

Here is an examples how to create fallback fonts rules collection and assign in into the FontsManager of a certain presentation:  

var pres = new aspose.slides.Presentation();
try {
    var userRulesList = new aspose.slides.FontFallBackRulesCollection();
    userRulesList.add(new aspose.slides.FontFallBackRule(0xb80, 0xbff, "Vijaya"));
    userRulesList.add(new aspose.slides.FontFallBackRule(0x3040, 0x309f, "MS Mincho, MS Gothic"));
    pres.getFontsManager().setFontFallBackRulesCollection(userRulesList);
} finally {
    if (pres != null) {
        pres.dispose();
    }
}

After FontsManager is initialised with fallback fonts collection, the fallback fonts are applied during presentation rendering.

Read more how to Render Presentation with Fallback Font.