How to set a background color of a Canvas in a C++ Metro App

Question

Hi,

i have a sample Metro app based on C++

i have a canvas define in my Xaml (named "Sample.xaml")

<Canvas Name="m_canvas"  HorizontalAlignment="Left" Height="748" Margin="0,0,0,0" VerticalAlignment="Top" Width="1034"  />

in the C++ file ( Sample.xaml.cpp)

i want to set the background color of this canvas at runtime -( not in the xaml file)

i tried the following 

SolidColorBrush ^col = ref new SolidColorBrush(Colors.Green);

m_canvas->Background = col;

but for some reason i get this error

Error : identifier 'Colors' is undefined

i must be missing something here - how do i resolve this ?

NOTE: using namespace Windows::UI::Xaml::Media; is added in my CPP file

Also, is there good metro app samples on using Canvas in C++ ? basically, some sample app where i could add shapes and other drawing objects at runtime . the msdn documentation is also very basic and dont have a good resource on C++ - everything shown is XAML and hardly any documentation on how to deal with the objects at programming level.

i am finding it hard to write such (drawing based ) an app - 

Any help is appreciated.

Thanks,

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Answer 1

Colors is in Windows::UI. And since the color names are static properties, you need to use :: as in Colors::Green.

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http://blog.voidnish.com

Answer 2

Thanks, i should have noticed that.

Thanks,

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Raj