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Asked: 2026-05-27T01:06:41+00:00

I would like to understand what effect has enablig the flag TextFormatFlags.TextBoxControl when using

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I would like to understand what effect has enablig the flag TextFormatFlags.TextBoxControl when using the TextRenderer.DrawText method is called.

I have written an small program and I can’t see difference between using it and don’t using it.

Also, I inpected the code with the .NET reflector and the flag is passed directly to the native method so I could see what is the effect.

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1 Answer

  1. Editorial Team

    It looks like it has something to do with Padding, maybe when MultiLines is in play.

    From Accurate Font Metrics

    Note that we calculate the size of the string using MeasureText and then we add an additional 7 pixels to the height. This is because the TextBox itself has some internal padding that it applies and from our testing it appears to be roughly 7 pixels.

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