I am working on a project using WinUI 3 in C++, and I want to change the border color of a XAML control(e.g. stackpanel) according to some condition. I have tried search it online, but most of answers are in c#, and some in C++ I have tried but got no luck.
For example: ("StackPanel" is defined in the xaml )
StackPanel().BorderBrush(SolidColorBrush(ColorHelper::FromArgb(255, 255, 255, 255)));
Then the error would come up:
no instance of overloaded function matches the argument list
argument types are: (winrt::Windows::UI::Xaml::Media::SolidColorBrush)
object type is: winrt::Microsoft::UI::Xaml::Controls::StackPanel
And another one I tried in .cpp file:
StackPanel().BorderBrushProperty(SolidColorBrush(Colors::Black()));
the error is:
too many arguments in function call.
Why are these errors happening?
Could anyone help me on this? Or any suggestions?
Sample code would be great!
PS : I am still very new to WinUI 3 especially in C++ (there are not so much study material for C++)
I would be grateful for any help.
From what I'm seeing the actual error (as best as i can replicate what you're doing) is
Severity Code Description Project File Line Suppression State
Error C2664 'void Windows::UI::Xaml::Controls::StackPanel::BorderBrush::set(Windows::UI::Xaml::Media::Brush ^)': cannot convert argument 1 from 'Windows::UI::Xaml::Media::SolidColorBrush' to 'Windows::UI::Xaml::Media::Brush ^' App1 c:\repos\App1\MainPage.xaml.cpp 29
If you create your brush like this auto brush = ref new SolidColorBrush(...);
And pass it to the stackpanel like this stackpanel->BorderBrush = brush;
Your error should go away.
Obviously how you are getting your stack panel might be different from how i did, but the point is you should be able to just set it to the value as long as you have the value in the correct form a ref new object in this case, it would seem.