Forums | NoesisGUI

Posted: **26 Sep 2019, 14:13**

Hi,

I try to bind FontSize and specify "pt".
How to convert from NsString to float?
In WPF, it can convert from string to double by FontSizeConverter().

XAML

<TextBlock  FontSize="{Binding FontSize}"... />

cpp

float GetFontSize() const{
	NsString fontSizeString = "20pt";
	float fontSize;
	//Convert from NsString to float
	return fontSize;
}

Posted: **27 Sep 2019, 17:55**

This is a bug, our FontSize property doesn't have a FontSizeConverter assigned, it only accepts float values, could you please report it?

In the meantime you can create a LengthConverter and use it to obtain the font size from the string value:

class ViewModel: public BaseComponent
{
public:
  ViewModel()
  {
    mFontSizeConverter = NsCreateComponent<TypeConverter>(NsSymbol("Converter<Length>"));
  }

  void UpdateFontSize(const char* size)
  {
    Ptr<BaseComponent> result;
    if (mFontSizeConverter->TryConvertFromString(size, result))
    {
      mFontSize = Boxing::Unbox<float>(result);
    }
  }
  ...
  
private:
  Ptr<TypeConverter> mFontSizeConverter;
  float mFontSize;
};

Posted: **30 Sep 2019, 06:55**

Thanks, I submitted https://www.noesisengine.com/bugs/view.php?id=1557

Posted: **04 Oct 2019, 17:03**

Thanks for the report.

Forums | NoesisGUI

[c++]How to bind FontSize and specify font size as "pt", "in" and "cm"

[c++]How to bind FontSize and specify font size as "pt", "in" and "cm"

Re: [c++]How to bind FontSize and specify font size as "pt", "in" and "cm"

Re: [c++]How to bind FontSize and specify font size as "pt", "in" and "cm"

Re: [c++]How to bind FontSize and specify font size as "pt", "in" and "cm"