How to create custom font and use?

[qwerty1874]

I tried reading Microsoft's samples.

``https://github.com/microsoft/Windows-classic-samples/blob/7cbd99ac1d2b4a0beffbaba29ea63d024ceff700/Samples/DirectWriteCustomFontSets/cpp/CustomFontSetManager.cpp#L125

I don't know cpp and I don't know if this is the right thing to do.

var writeFactory = DWrite.DWriteCreateFactory<IDWriteFactory5>();

var pFontSetBuilder = writeFactory.CreateFontSetBuilder();

var pFontFile = writeFactory.CreateFontFileReference(fontPath);

pFontSetBuilder.AddFontFile(pFontFile);

var pFontSet = pFontSetBuilder.CreateFontSet();

var textFormat = writeFactory.CreateTextFormat(fontName, 20.0f);

But the result is wrong. DrawText used default font.

This font must be installed?

[qwerty1874]

When I read msdn again, I found that I should use the created font collection, not system font collection. I used to think CreateTextFormat could search all font collection, only need to AddFontFile.

Correct about this:

var pWriteFactory = DWrite.DWriteCreateFactory<IDWriteFactory5>();

var pFontSetBuilder = pWriteFactory.CreateFontSetBuilder();

var pFontFile = pWriteFactory.CreateFontFileReference(fontPath);

pFontSetBuilder.AddFontFile(pFontFile);

var pFontSet = pFontSetBuilder.CreateFontSet();

var pFontCollection = pWriteFactory.CreateFontCollectionFromFontSet(pFontSet);

var textFormat = pWriteFactory.CreateTextFormat(fontName
    , pFontCollection
    , FontWeight.Normal
    , FontStyle.Normal
    , FontStretch.Normal
    , 20.0f);