如何计算Metro中字符串的宽度(不显示)？

Question

我找不到与以下WPF代码等效的Windows运行时来测量字符串的宽度:

FormattedText formattedText = new FormattedText(in_string,in_culture,in_flowdir,in_font,in_sz,in_color);
string_width = formattedText.WidthIncludingTrailingWhitespace);

有人知道它是否可以在Metro中完成？

Answer 1

有可能,我发现了一种可以提供有用测量的方法,但我不确定这是最好的方法:

// Setup the TextBlock with *everything* that affects how it 
// will be drawn (this is not a complete example)
TextBlock^ tb = ref new TextBlock; 
tb->VerticalAlignment = Windows::UI::Xaml::VerticalAlignment::Top; 
tb->HorizontalAlignment = Windows::UI::Xaml::HorizontalAlignment::Left; 
tb->Height = in_height; 
tb->Text = text;

// Be sure to tell Measure() the correct dimensions that the TextBox 
// have to draw in!
tb->Measure(SizeHelper::FromDimensions(Parent->Width,Parent->Height)); 
text_width = tb->DesiredSize.Width;

我的直觉是,在某些情况下,此代码会产生意外结果.